Car Battery Repair Guide – Refurbish And Recondition Lead Acid Batteries

Does car battery repair have benefits for you? Car battery repair has benefits all of us should consider. How many of us have been in the situation where we are purchasing a new car battery to replace one that can be restored, refurbished, or reconditioned to like new condition? This is all to common in today’s society.

More: The Best Car Jump Starter: an emergency gadget for car

Car Battery Repair

Think of our situation over 50 years ago where the average household was lucky to have a single car, and a house with a single car garage. Today the typical household will likely have a minimum of two vehicles, and three stall garages are becoming more common. The need for car batteries and car battery repair will likely continue to increase in the future.

Continue reading “Car Battery Repair Guide – Refurbish And Recondition Lead Acid Batteries”

Fender DG-8S Acoustic Guitar – Very friendly for Beginners

Fender DG-8S is another acoustic guitar recommended for those who just learn to play guitar but are not sure enough if they’re going to enjoy playing guitar.

Fender DG-8S Acoustic Guitar

Some people are a bit skeptical of this “value pack” guitar tagged for a low price slightly under $200. To tell you the truth, the DG-8S is Fender’s very popular acoustic guitar. It is the Best Gifts for Guitar Players and Guitar Lovers

It features a dreadnaught body shape with solid Spruce top, produces a good sound, has an impressive look and it came with a lot of stuff that’s very useful for beginners. It’s also a decent guitar for players in intermediate level. More over, IT’S A FENDER, a well known guitar brand that has been building up their reputation over the years by selling high quality guitars.

As we have said, Fender DG-8S is a perfect starter guitar pack as it came with a lot of useful stuff for beginners like strings, picks and even a strap so you can start playing. It’s also packed with a decent gig bag and instructional DVD with a good clarity that is very easy for a newbie to understand how to play an acoustic guitar. Continue reading “Fender DG-8S Acoustic Guitar – Very friendly for Beginners”

My Favourite Songs: Music for Love

You may be surprised to know that music is an important tool for some professionals. Health practitioners often choose to play particular types of music in waiting rooms to ease the fear of clients.

Retail outlets use music to raise the energy of browsers; people who are happy and energized spend money more quickly. Religious services use music to help congregations turn their thoughts to worship. Schools and educational media use music to speed learning.

Favourite Songs

Who doesn’t like music? Even people who aren’t necessarily music-lovers can name a few tunes they enjoy.

Even the less musically-inclined among us probably have favourite singers, instruments, and genre, or type, of music. The more music we hear, the more preferences we develop, and we hear a lot of music!

Maybe you like: The Best Ukulele for Beginners

In all of it, perhaps the most common theme is love. Call it romance, call it passion, sway to a ballad or gyrate to hip-hop – whatever you do, be sure to include music in your romantic plans! This lens will give you an overview of some of my favourite love songs. Continue reading “My Favourite Songs: Music for Love”

The Most Efficient Batteries for Best Solar Panels Power

There are some ways to sort out battery type, in this article I will sort out two main types of batteries that are popular. These are classified by the structure and applications, with their own advantages and disadvantages.

The Most Efficient Batteries for Best Solar Panels Power

*** The Li-Polyme and Li-Ion Batteries are using in solar power too. However, their price are high so they are not popular.

Batteries are classified by the structure, we have two main types of batteries are:

  • Flooded Lead Acid batteries (FLA) and
  • Sealed Valve-Regulated Lead-Acid batteries (VRLA).

Flooded Lead Acid batteries (FLA):

FLA batteries are the most commonly used batteries. FLA batteries require periodic topping up with electrolyte so that we call it is “Wet” or “Flooded”. This is the traditional technology that having been used for decades.

The word “flooded” is used because these types of batteries contain an excess of electrolyte fluid so that the plates are completely flooded. The level of electrolyte should be above the tops of plates which serve as a reservoir to make sure that water loss during charging does not lower the level below the plate tops and cause damage.

They usually have the long life and the lowest cost per amp-hour of any another choice. The cons are that they do require regular maintenance as add watering, equalizing charges and keeping the terminals clean. They produce more combustible gases when charging too so we need put them in airy place.

Sealed Valve-Regulated Lead-Acid batteries (VRLA):

VRLA batteries are more commonly known as “sealed batteries”. In fact, they are called valve-regulated is more suitable than “sealed” because VRLA batteries are fitted with a pressure vent that allows surplus gas to be vented when the internal gas pressure builds up.

VRLA batteries were designed to eliminate the need for water addition and to provide batteries that could be used in any position.

The cost of VRLA batteries is higher than FLA batteries and because of their “sealed” construction, VRLA batteries are considered “maintenance free” and require no addition of electrolyte or water to the cells.

VRLA batteries types are commonly classified as:

  • Absorbed glass mat (AGM) batteries – has the electrolyte absorbed in a fiber-glass mat separator.
  • Gel batteries – “gel cell” – has the electrolyte mixed with silica dust to form an immobilized gel.

Batteries are classified by the applications, we have two main types:

  • Starting (Shallow-Cycle) Batteries and
  • Deep-Cycle Batteries.

With all of FLA and VRLA batteries types which was classified above, they also has classified as deep cycle and shallow cycle batteries.

Starting (Shallow-Cycle) Batteries:

Starting (Shallow-Cycle) Batteries

  • Sometimes called SLI (Starting Lighting and Ignition) battery for starting, lighting, ignition batteries that having short or “shallow” depth of discharge.
  • Because the battery plates designed for have a large surface area (the thin sponge-like plates lead structure) for instant chemical reactions. It’s mean that they are designed to produce a very high starting current in a very short time.
  • These batteries are not recommended for use in solar power system because they would quickly be ruined by the deep cycles required for extended use.
  • These batteries type will generally fail after 30-150 deep cycles while they may last for thousands of cycles in normal starting use (2-5% discharge).
  • The starting battery is designed to start the vehicle engine.

Deep-Cycle Batteries:

Deep-Cycle Batteries

  • The main difference between the best deep cycle batteries and starting batteries are the battery plates are SOLID thick lead plates – not sponge-like lead as of starting batteries. This gives less surface area, thus less “instant” power like starting batteries.
  • Deep-cycle batteries are designed to be large discharged down to 80% capacity of battery but the best long life-span is to keep the average cycle at about 50% discharge.
  • The deep-cycle batteries are made to provide stable continuous power.

Which battery type is best and most efficient battery for solar panels power?

As above mention, starting (shallow-cycle) batteries types are designed to deliver short and high-current for only starting the engine. They are designed to discharge only a very small (2% – 5%) part of their capacity too.

Read more:

So the best and most efficient battery for solar panels power is deep-cycle battery types. Deep cycle batteries are designed with larger plates and different chemistry to avoid the corrosive effect of frequently using the full capacity. They are designed to discharge deeply (up to 80%), using most of its capacity.

Below is a comparison table that will let you know about the best as well as affordable batteries which is Most Efficient Batteries for Best Solar Panels Power for many years.

How to choose the best battery for your solar power system?

Now, you known that the best batteries for your solar panels power are deep-cycle batteries types. Below I’ll write details for it.

What is a Best Deep Cycle Battery?

Best deep-cycle batteries types are designed for regularly depth of discharge that using most of its capacity.

What is depth of discharge (DoD)?

DoD is a measure of battery capacity which is used to describe how deeply the battery is discharged.

For instance:

  • If a battery is 100% fully charged, it means this battery has 0% DoD.
  • If a battery has delivered 30% of its capacity, here are 70% energy reserved, it means the DOD of this battery is 30%
  • If a battery is 100% empty, the DOD of this battery is 100%

DoD always can be known as how much energy that the battery delivered. For deep-cycle batteries types, do not fully discharge them to 100% DOD, it would shorten the cycle life of batteries. Highly recommend for discharge is 50% DoD.

The Differences between Deep-cycle Flooded (FLA) and Deep-cycle Valve-Regulated Lead-acid (VRLA) Batteries for best solar panels power:

Choosing the best batteries types for your solar panels power system is important. That why understand the main differences between deep-cycle flooded (FLA), and Deep-cycle Valve-Regulated Lead-Acid (VRLA) Batteries is essential. With the VRLA type will be subdivided into two types, Absorbed Glass Mat (AGM) and Gel Batteries.

Deep-Cycle Flooded Lead-Acid Batteries (FLA):

Deep-cycle flooded lead-acid batteries are very versatile and should be the first choice for renewable energy systems where maintenance can be carried out and ventilation is available.

The pros of using deep-cycle flooded batteries:

  • Lower cost than deep-cycle VRLA batteries.
  • Longer deep-cycle lifespan than deep-cycle VRLA batteries.
  • Simple maintenance by addition of distilled water.
  • High discharge rate capability.
  • Good Performance in hot climates. (>90 oF)
  • More available worldwide.
  • Operation better then deep-cycle VRLA batteries when regularly in a partial state of charge.
  • Long, proven history of use.

The cons of using deep-cycle flooded batteries are:

  • Period of adding distilled water is must have.
  • Can only be used in an up-right position.
  • Produce gas (oxygen and hydrogen) when charged.
  • May emit acid spray if overcharging.
  • Require ventilation.
  • Higher self-discharging rate than deep-cycle VRLA batteries.
  • Cannot be used in the near areas of electrical equipment or anything highly flammable.

Absorbed Glass Mat (AGM) Batteries:

AGM (Absorbed Glass Mat) is the safest and best option. They require very little or no maintenance. There is no need for ventilation and they will not spill.

The pros of using deep-cycle AGM batteries:

  • Cheaper than deep-cycle Gel batteries.
  • Temperature range for operating is wider than deep-cycle Gel or FLA batteries.
  • Slowest self-discharge rate than FLA, AGM and Gel batteries.
  • Best shock/vibration resistance than FLA, AGM and Gel batteries.
  • Best for high power applications than FLA, AGM and Gel batteries.

The cons of using deep-cycle AGM batteries:

  • Don’t perform as well as deep-cycle FLA or Gel batteries for systems that require regular deep discharge. (i.e. 80% DoD)
  • Do not operate as well as deep-cycle Gel batteries in low power applications.

Gel Batteries

Gel batteries are generally superior to AGM in recovery from deep discharge because they contain more electrolytes and are less susceptible to stratification than either flooded or AGM batteries. The gel electrolyte has a higher resistivity than fluid electrolyte therefore Gel batteries have lower high rate charge and discharge capability than AGM and flooded types.

The pros of using deep-cycle Gel batteries:

  • Operation better than deep-cycle AGM batteries for systems that require regular deep discharge. (i.e. 80% DoD)
  • Perform better than deep-cycle AGM batteries for low power applications.

The cons of using deep-cycle Gel batteries:

  • More expensive than deep-cycle FLA and AGM batteries types.
  • Do not perform as well as deep-cycle FLA or AGM batteries in cold temperatures. (< 40 oF)
  • Do not perform as well as deep-cycle FLA or AGM batteries when they regularly reach a shallow depth of discharge. (i.e. 20% DoD)
  • Higher self-discharge rate than deep-cycle AGM batteries.

In Summary

The Best and Most Efficient Batteries for Best Solar Panels Power are deep cycle batteries types that are designed with larger plates and different chemistry to avoid the corrosive-effect of frequently using the full its capacity. They are designed to be regularly deeply discharged using most of its capacity.



Why You Need a Best Power Inverter for Your Solar Panels Power?

The Power Inverter is the important device of your Solar Energy System. It converts the low voltage DC of battery to the volt AC for most home appliances.

Best Power Inverter for Your Solar Panels Power

To choose Best Power Inverter, you don’t need to know and understand how it works, but you should understand some basic functions because it help you take the best- right one for your system. In this article which gives some of the useful information for you.

Read more: Choose Best Battery Charge Controller for your Solar Panels System

What Inverter type is Best for you?

There are many types of solar inverters, each of which have different functions and are used for different type of solar energy system, but all of these inverter converts DC into AC volt.

Depending on application, we have:

Stand -Alone Inverters

With a stand-alone inverter system, you will be fine by power outages because your power system completely independent from the power grid. You will be free to use your electricity system whenever you want.


You should buy a quality stand-alone inverter with built-in ability to surge – surge compliant inverter, because many of heavy equipment as: washers, dryers, and dishwashers… need large power (power surge) when first being startup.

Synchronous Solar Panel Inverters or Grid tie inverters

Synchronous Solar Panel Inverters are used when you want to be connected to the grid. The solar power via inverter may be used by your house loads or/and send it back to the utility grid (synchronous with utility grid company) and you get money or reduce your electricity bills every month.

This type of inverter is best if you do not want to buy a battery to store the solar energy so you won’t need to maintain and change batteries.


When purchase a Synchronous Solar Panel Inverters, you have to check for make sure that the inverter has anti-islanding protection function which forces inverter to shut down in case of power outages.

Without anti-islanding protection, your solar system would continue to generate electricity. It is extremely dangerous for utility workers who are trying to repair the gird during a power outage.

Multi-function inverters (hybrid-power inverters, backup battery inverters)

Sine Wave InvertersA multi-function inverter is combined of two types, Stand -Alone Inverters and Synchronous Solar Panel Inverters. It allows you to produce, store, and consume power that your solar system produces and have profit when you sold it out.

Multi-function inverters is obviously expensive than the other two types because it get all benefits of the others.

Depending on the technology, we have:

Modified Sine Wave Inverters

Modified sine wave or step wave inverters produce a stepped waveform, which isn’t really a sine wave at all, it is only approximate a pure sine waveform and they are less expensive than pure sine waveform inverters too.

It works well in most applications and even most computers work well. However there are some exceptions, some appliances that use inductive loads: motor speed controls, water pump… may not work right with a Modified Sine Wave inverter because to generate an irritating buzz.

They are not quite as good as true sine wave inverters, but this is probably the most popular and economical type of power inverter.

True Sine Wave Inverters

Best pure sine wave inverter is used to operate sensitive electronic devices that need high quality waveform with little harmonic distortion.

In addition, they have high surge capacity which means they can to exceed their rated wattage for a short time.

This is the better choice if want optimal performance from electric motors, such as electric water pump, motor…

Advantages of best pure sine wave inverters:

  • Output voltage wave form is pure sine wave with very low harmonic distortion and clean power like utility-supplied electricity.
  • Inductive loads like microwave ovens and motors run faster, quieter and cooler.
  • Reduces audible and electrical noise in fans, fluorescent lights, audio amplifiers, TV, Game consoles, Fax, and answering machines.
  • Prevents crashes in computers, weird print out, and glitches and noise in monitors.


When choose best power inverter to change the DC into alternating current (AC) for your home, it is important to select an inverter with the following characteristics:

  • High efficiency
  • Low standby losses
  • High surge capacity (peak power)
  • Low harmonic distortion

Choose Best Deep Cycle Battery Charge Controller for your Solar Panels System

The Best Deep Cycle Battery Charge Controller gets 3 to 5% of the whole solar power system cost. When investing in a quality charge controller ensures your Best Deep Cycle Battery which extends life and reduces associated costs.

Solar Controller

Choosing a well-made charge controller is essential to the long life and most efficiency for your entire solar power system.

Why you Need a Best Deep Cycle Battery Charge Controller for your Solar Panels System?

The charge controller monitors and regulates the rate of solar panels electric current that is flowing into and out of the battery bank. So that it prevent overcharging and deep discharging. Depending on the charger technology, it protects battery life too.


Benefit for using Right and Best Deep Cycle Battery Charge Controller:

  • Protect battery from overcharging and deep discharging.
  • Increase long-life battery.
  • Optimize for maximum solar panels power transfer to the battery.

Which Deep Cycle Battery Charger is a Best and Most Efficient for your Solar Panels System, MPPT or PWM?

There are two dominant charge controller technologies on the market: MPPT (Maximum Power Point Tracking) and PWM (Pulse Width Modulation). They work in different ways and they suited for different types of applications.

PWM and MPPT solar charge controllers are both popularly used to charge batteries with solar power:

PWM Solar Charge Controller:

The PWM Solar Charge Controller is designed for optimized to extend the life of battery. With applying higher voltage in short bursts PWM solar charge controller essentially clean-off the lead plates that are a central part of the battery storage system.

  • PWM solar charge controllers are cheaper than MPPT solar charge controllers.
  • Recommended for use in smaller solar systems (< 150W).
  • Well performs in warm weather.

MPPT Solar Charge Controller:

The MPPT Solar Charge Controller (Maximum Power Point Tracking) is designed convert the voltage from your solar panels system with optimized for maximum energy transfer to the battery bank.

  • MPPT controller is typically more expensive than PWM.
  • More efficient, they can produce better power (10‐15%) with the same number of solar modules than a PWM controller.
  • With 150W – 200W or higher of solar system will take advantage of MPPT benefits.
  • MPPT controller is better and suited for colder conditions.


The Best Deep Cycle Battery Charge Controller monitors the status of batter. Depending to voltage status, it will determine when to disconnect or reconnect battery to its solar power source. Some Best Deep Cycle Battery Charger has digital screens to keep you informed of the charge status of battery.

Remember, a Best Deep Cycle Battery Charge Controller is an integral part of your solar system.

  • PWM solar charge controller: are less expensive and suitable for smaller solar systems where price point is critical or where the additional power is not really needed.
  • MPPT solar charge controller: maintain optimum power levels between solar panels and battery. They are very efficient, particularly in cold temperatures, and come in a range of models.

Solar Power – The most Efficient Energy for your House

Using the Sunlight to convert into to electric power for your home can help reduce your electricity bills and your carbon footprint.

Solar Power – The most Efficient Energy for your House

Unlike other sources of electricity from the power grid, solar energy is green, clean and renewable. Using best and most efficient solar panels release no greenhouse gases and they don’t pollute the environment.

In this post, I don’t want to write about technical specifications, I try to release some main information which easy to follow for readers.

The advantages and disadvantages of using solar panels power:


  • Solar energy source is a completely renewable resource.
  • Solar energy source does not cause pollution.
  • Very little maintenance cost is needed to keep solar cells running.
  • Solar power can be used in distant areas where it is too expensive to extend the electricity power grid.


  • Large areas of land to capture the suns energy.
  • Solar panels can be expensive to install resulting in a time-lag of
  • many years for savings on energy bills to match initial investments.
  • Solar power is used to charge batteries so that solar powered devices can be used at night. The battery systems can often be big and heavy, taking up space and needing to be replaced from time to time.

What is a Best Solar Panel?

A best solar panel is a collection of solar cells. Solar panels, also known as photovoltaic, are devices that convert the sun light into electricity . Lots of small solar cells spread over a large area can work together to provide enough power to be useful.

Solar Panel

Solar Power is considered “Renewable Energy” because…

  • The technology used to convert the solar panels power into electricity does not produce smoke (carbon dioxide and other air pollutants).
  • Tapping the solar energy does not usually destroy the environment.

Some device work with solar panels:

  1. Charge controller: will help to control the energy from solar panel power to battery without overcharging.
  2. Battery: will store energy from solar panels.
  3. Inverter: will change DC volt into AC volt.

Some terminology about Solar Panel Power:

terminology about Solar Panel Power

  • Solar Cell: This is semiconductor part that converts sunlight into direct current (DC) electricity.
  • Module: Solar modules consist of solar cell circuits sealed in an environmentally protective laminate and are the fundamental building block of solar systems.
  • Solar Panel: Includes one or more solar modules assembled as a pre-wired, field-installable unit.
  • Array: a solar array is the complete power-generating unit, consisting of any number of solar modules and panels

Why to choose Solar Panel Power ?

The main factors why you need to have a solar panel for your home:

  1. Taxes – Your local government may offer you a rebate when you have one!
  2. Savings – Never worry about large electricity bills once more!
  3. Free Power – You can use the appliances inside your home for free!
  4. Affordable Power – Never worry about the price of your power bill going up.
  5. Going Green – This may assist make your house much more environmentally friendly.
  6. House Value – The value of your house will go up!
  7. Easy to install and use – You don’t have a technician for installation and maintenance.
  8. Long lifespan (15 to 25 year old) with low maintenance cost.
  9. Little or no maintenance required.

With solar power you will lower your monthly utility bills, get energy independence and help create a better environment and a better future for yourself and social benefits. It’s easy to do, easy to use with, and most importantly it pays for itself!

How to the Solar Panels Power work ?

How to the Solar Panels Power workLook at the picture above, this illustration for how to best solar panels power work.

Solar Panels: will convert the sunlight to DC volt energy.

Charge Controller: A charge controller/charge regulator is basically a voltage and current regulator to keep batteries from over-charging. It regulates the voltage and current from the solar panels going to the battery. Most 12 DC volt panels put out about 16 to 20 DC volts, so if there is no regulation the batteries will be damaged from overcharging. Most batteries need around 14 to 14.5 DC volts to get fully charged.

Battery System: Will store energy (DC volt) from solar panels via charge controller. Without batteries to store energy you will only have power when the sun was shining. Battery will supply DC power for some devices but many devices need AC power that why we use inverter to covert DC into AC power.

Inverter: The inverter converts DC power stored in batteries or other DC power sources into the AC electrical power (power grip is AC volt ). That for many home appliances as pumps, and motors, TV, fan, refrigerator…

Which the Solar Panels are Best Efficiency?

There is lot of different types of affordable solar panel, from a range of manufacturers on market. Remember that the best solar panels type may be different depending on your needs and location!

1. Monocrystalline:

Monocrystalline cells are made from a single crystal of ultra pure silicon. Mono cells are typically a little more expensive since they’re a little more difficult to produce. The benefit of mono cells is that they perform slightly better under low light conditions equating to better production on cloudy days.

  • Good monocrystalline power-to-size ratio: efficiency typically within the range of 135-170 Watts per m2 (13-17%, with notable exceptions).
  • Outstanding performance in cooler and clouds conditions.
  • Some leading units now have over 18% conversion efficiency.
  • Previously the most popularly used technology in the world, with over 50 years of technological development.
  • Excellent life span / longevity. Usually come with a 25yr warranty.

2. Polycrystalline:

Polycrystalline cells are made up of multiple crystals and are generally less expensive to manufacture than mono cells. Polycrystalline panels are made up of many crystals, this means that they also absorb less sunlight and produce slightly less than mono cells per metre squared.

  • Good conversion efficiency: typically 120-150 Watts per m2 (12-15%, with notable exceptions).
  • Generally speaking, less expensive to produce than monocrystalline.
  • A bit better performance in hotter conditions (lower heat derating coefficient)
  • Excellent life span / longevity. Usually come with 25yr warranty.

3. Amorphous Thin Film:

A thin-film solar cell (TFSC), also called a thin-film photovoltaic cell (TFPV), is a solar cell that is made by depositing one or more thin layers (thin film) of photovoltaic material on a substrate. Thickness of film varies from a few nanometers to tens of micrometers.

  • Low efficiency: typically 60-80 Watts/m2 (6-8%, with notable exceptions).
  • Long life is less than crystalline panels.
  • Good efficiency in hot weather, less effective in cooler conditions.
  • 3-6 month ‘breaking in’ period where long term output is exceeded.
  • Requires 2-3 times more solar panels and surface area for same output as crystalline.

What basic equipment and accessories will you need for using Most Efficient Solar Panels Power ?

Of course, you have to a best solar panel first and then here are some solar panel equipments and accessories you might also need:
High quality Charge Controller is necessary because the excessive voltage from solar panels could damage the batteries. When the input voltage rises, the charge controller regulates the charge to the batteries protecting any overcharging.

  1. A good deep cycle battery to store the power generated by your panel.
  2. If you want to run AC (mains) equipment s from the battery power you’ll need an Inverter to convert DC into AC.
  3. Sensitive or high power electrical equipment and computers work best with a pure sine wave inverter.
  4. And some parts like: solar panel mounts, cables, plugs, sockets…


Solar energy is becoming more popular and most efficient in the world. Save monthly electric bills, protecting environment, easy to install, very little or no maintenance required, using for a long time (over 20 year old) are benefits when choosing solar energy.

I hope you have more useful information about Best Solar Panels and using Most Efficient Solar Panels for your house.

Flashlight Review: Olight M20-X Warrior 500 Lumens

I bought the Olight M20-X after doing a lot of online research on the different torches powered by 18650 or CR123A batteries. I was looking for a light that was as compact as a 2 x AA battery model but more powerful.

I found that most of the premium flashlight producers offered very similar models in this category, so I chose what I considered to be the best combination of output, runtime and price.

Editor rating
+ 9/10 all-around amazing gear
+ Great build quality
+ Strong even beam
+ Excellent runtime
+ Relatively inexpensive
– 250m throw claimed by Olight

  • Diameter: 33.5 mm (1.31”)
  • Length: 140 mm (5.51”)
  • Weight: 120.5 grams (excluding batteries) = 4.25 oz

First Impressions

The Warrior came with some useful accessories such as a glow-in-the-dark tail cap and spare o-rings. I was very impressed by the holster supplied. It is not only very sturdy, but also offers side pockets to carry spare batteries. There is also a battery case to stop CR123A batteries from rattling inside the holster.

Of course, the torch itself was my main focus of attention. I liked the solid build quality, and, after removing the tactical ring and the steel clip, the M20-X felt great in my hand too. The torch is made out of aircraft grade aluminium.

The M20-X has a lock-out function to stop it switching on by accident. It also has a momentary activation feature and memorises the last light level used.

The Warrior claims to fulfill the MIL STD 810F standard, which, after reading Wikipedia, has left me more confused than enlightened. I guess I’ll just have to test it myself under adverse conditions.


According to the Olight the M20-X Warrior has the following output and runtimes:

  • 500 lumens for 1.5 hours
  • 100 lumens for 5 hours
  • 10 lumens for 85 hours
  • 500 lumens for 3 hours Strobe

These figures were very important for me. Although the torch is brighter with CR123A batteries, Olight M20-X claims that the runtime is longer (one hour longer) with a single 18650 rechargeable cell. I was prepared to trade the brightness for the runtime and had decided in advance that I would power it with a 18650 rechargeable.

For my test I just fitted the flashlight with a fully charged 2600mAh 18650 battery, switched it on max and watched how the light developed until the very end. Continue reading “Flashlight Review: Olight M20-X Warrior 500 Lumens”