How I Build 18650 Batteries

How I Build DIY 18650 Battery Packs for any kind of project I need a custom battery pack for. Mistakes were made.
I forgot to mention that after I make the battery pack I normally cover the battery with some Heat Shrink. Also it was my first time using that cell holder, I dont recommend it.
My Favorite Spot Welder (So Far):

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Efan WF1 2 Slot LCD Battery Smart Charger AA AAA 26650 26350 18650 Li-on Batteries Chargers

EFAN WF1 18650 li-ion rechargeable battery charger Features:
* Provides 3 optional Charging Modes(0.25A/0.5A/1A)
*LCD screen with precise voltage and battery level display
* USB output function with supply power for mobile devises
*With Car charger function
*Capable of charging 2 batteries simultaneously
*Each of the two battery slots monitors and chargers independently
*Automatically identifies IMR ,Li-ion, Ni-MH and Ni-Cd ,C rechargeable batteries
*Features three charging modes (CC,CV and Trickle Charge )
*Automatically stops charging when complete
*Features reverse polarity protection
*Power saving mode
*Built-in reverse polarity protection
*Designed for optimal heat dissipation
Input Power DC 12V 1A
0.25A CC Current 0.25A ±20mA
0.5A CC Current 0.5A±30mA
1.0A CC Current 1A±50mA
Cut-Off Voltage 4.2±0.02A
Auto Recharging Threshold Value Voltage 3.9±0.15V
Detection Precision ±0.02V
Operation Temperature 0~40°C
Storage Temperature 0~70°C
0.25A 10440-18700 3.6-3.7V
0.5A 17670-18700 3.6-3.7V
1.0A 18650-26650 3.6-3.7V
Weight 350g/pc
USB Adaptor Type US /EU /UK/AU


Flashlight Basics: Should You Leave Batteries in a Charger?

Welcome to Flashlight Basics, a short series to provide information to new(er) flashlight owners and aspiring enthusiasts. In this episode I talk about leaving batteries in a charger overnight, and why you may want to reconsider that habit.

If you aren’t already using rechargeable batteries, I highly recommend switching today. You’ll save money, the environment, and your flashlight/device.

Check out some rechargeable batteries and chargers here:

About the maker:

Before introducing Prometheus Lights to the world, founder Jason Hui designed watches, fly-fishing equipment, retail stores and machine tool accessories. He’s built animatronic sharks for a Hollywood special effects studio, worked on the Automotive X Prize and the world’s first high-performance electric motorcycle at Mission Motors. “The world is full of stuff,” says Hui. “As a consumer, I want to buy things that I know someone has cared about and that I know will last. As a designer, maker and strategist, I strive to create products that reflect how I see the world, my values and they way I want to fit into the big picture.”



unchargeable batteries recharged :18 volt battery
click here for step by step directions.
reviving dead no charging Ryobi 18 volt battery. take a sec, please click on my name under the title and watch my ff verses lol video I think you will laugh.


12V 6A Battery Charger Automatic Maintainer Portable Smart Lead Acid Batteries Power

12V 6A Battery Charger Automatic Maintainer Portable Smart Lead Acid Batteries Power Charging Adapter For Automotive Truck Car

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Hitachi UC18YSL3S 18-Volt Lithium Ion Batteries / Charger Kit

The Hitachi UC18YSL3S 18V Lithium-Ion Battery/Charger Kit includes two (2) BSL1830C 18V Compact 3.0Ah Lithium Ion batteries and one (1) UC18YSL3 Rapid Battery
Charger that includes a USB port. It is a powerful battery/charger combination for a variety of Hitachi 18V slide-type power tools.

The batteries are rated at 3.0 Amp Hour (Ah) and are compact and lightweight to reduce user fatigue. The Amp hour capacity refers to how long the battery can last before recharging. For protection from the elements, this battery features a resin coating. Its complex circuitry also prevents damage from overload, overcharge, and over-discharge of the battery. The batteries have the same capacity as conventional 18V 3.0Ah Lithium Ion Batteries, while the footprint is 3/4″ shorter in height and 0.6 lbs lighter in weight (compared to the Hitachi battery model (BSL1830) making the experience lighter, more comfortable and more convenient. The BSL1830C Lithium Ion Batteries are covered by Hitachi’s 2-year warranty.

The UC18YSL3S Rapid Charger cools the battery during the charging cycle to prevent overheating and comes with a color light indicator to clearly indicate the stage of charging the battery. The charger can also replenish a depleted 18V 6.0Ah battery in less than 38 minutes. It is produced with a USB port that can charge smartphones and other mobile devices for added convenience. The UC18YSL3S charger kit is warranted to the original purchaser to be free from defect in materials and workmanship for a period of 1-year from the original purchase date.

Covered by Hitachi’s 2-Year Lithium Ion battery warranty, and 1-Year Charger Warranty
Battery is 3/4″ smaller in size than traditional 3.0Ah battery
Battery is 0.6 lbs lighter than the traditional 3.0Ah battery
Lithium-Ion Battery provides steady level of power throughout use
Batteries are compatible with Hitachi 18V slide-type power tools
Battery is 3.0Ah (Amp-hour) capacity for longer run time
Multiplex Protection Circuit prevents from over-load, over-charge & over-discharge to improve safety and ensure a long battery lifetime
Charger comes with a USB port that can charge smartphones and other mobile devices for added convenience
Charger designed to cool the battery during the charging cycle to prevent overheating
Charger uses color light indicators to clearly indicate the stage of battery charge
Charger rapidly charges Hitachi Lithium Ion slide-type batteries

(2) 18V Compact 3.0Ah Lithium Ion Batteries (BSL1830C) (339782)
Rapid Charger with USB Port (UC18YSL3)

Part Number – Charger – UC18YSL3
Item Weight 1.35 lbs –
Dimensions – (LxWxH) 4-17/32″ x 7-9/32″ x 3-1/16″
Voltage – 14.4Volts-18 Volts
Item Package Quantity – 1
Battery Cell Type – Lithium Ion
Charging time – BS1815X 15 min
Charging time – BSL1830C 30 min
Charging time BSL1860 – 38 min
USB Port – Yes
Cooling Fan – Yes
Charge – Discharge Circles BSL1815X – 1,000
Charge – Discharge Circles BSL1830C – 1,500
Charge – Discharge Circles BSL1860 – 1,500
Charging Current – BSL1815X and BSL1830C – 6.0/4.0 A
Charging Current – BSL1860 – 8.0 A
Power Input – 195 W
Warranty – 1-Year

Part Number – Battery BSL1830C (339782)
Voltage Type 18V / Lithium Ion Slide
Battery Amp Hour Compact 3.0Ah
Weight 0.86 lbs
Batteries Included 2
Warranty 2-Year

Learn more about this tool:


Amazon Basics AA Battery & EBL Charger Review (BEST BUDGET BATTERIES)

In this video I talk about the Amazon Basics AA Battery & EBL Charger and tell you guys my honest opinions on these budget batteries.

You can check out the AA Batteries here:

You can find the charger here:

Do you guys use disposable batteries? What are your thoughts?

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**Disclaimer: This is not a sponsored video, all opinions expressed are my own. The links provided are Amazon affiliate links which means I earn a small commission if one were to purchase an item via the link.


Solar Battery Chargers – Another Excellent Deal! EasyPower USB AA Rechargeable Batteries 4 Pack w.. – EasyPower USB AA Rechargeable Batteries 4 Pack w/Free 4-Port USB Hub – 1450mAh 1.2V NiMH AA USB Battery Charger Plugs into Any USB Device, 2-3 Times More Power Than Standard AA’s
NO MESSY CORDS & CABLES: Simply pop open the cap on your EasyPower Battery and plug it into any powered USB port to start charging it. There’s no need to carry a separate charger or worry about finding any extra cords and cables. LIMITLESS RECHARGING OPTIONS: The EasyPower charges anywhere there’s a USB port. This gives you hundreds, if not thousands, of different options to quickly charge your batteries including methods that work in a crisis like charging via solar power. UNDENIABLE VALUE: Because every EasyPower Battery gives you over 500 charges, you’ll save hundreds of dollars compared to buying regular batteries. BATTERY TYPE: AA Rechargeable USB, NiMH, 1450mAh, USB 2.0 and USB 1.1 BEST GUARANTEE IN THE SURVIVAL GEAR INDUSTRY: We guarantee our product with our 6 Month “Any Reason” Refund Guarantee. Ships from USA. Click Add to Cart Now!

{More detailed infoCheck this out for more infoLots more detail hereCheck here for extra informationMore to read here} –


Nitecore USN4 Pro Charger for NP-FZ100 Batteries | First Look

A first look review of Nitecore’s Dual Battery Charger for FZ100 batteries ( ). I recommend this QC3 charger for fast charging:

The chargers I’m testing:
Nitecore NP4 Pro:
Hahnel Pro 2 Charger:

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This video was not paid for by third party sponsors or manufacturers.
No equipment or gear was supplied to me for this video.

The content of this video and my opinions were not reviewed or paid for by any parties.

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"Battery chemistry_ Lithium v Sodium v Iron" Revive All Types Of Old And Dea Batteries

click here ►►► This video contains informations about the progress in batterie’s science and technologies. However, I published it like others to back up the niche I ‘m working on.

The link below witll take you to read will show other tech tricks about how to recondition your old or dead batteries.

Check your car’s electric connections and cables, be all ears to your vehicle, and if you are sure that your battery is about to die think about replacing it or learn how to bring it back to life in easy steps…

car battery safe for a long time. And if it happens that it starts dying, you can save it by using the guide to recondition it properly and bring it back to life again. The guide can save you money and also, it can help you run a business.

before their limit time. This will make you buy expensive new batteries for your battery bank. But, if you know how to maintain them for a long time, you will surely save eneough money. On other hand, you also can recondition and bring dead batteries back to life for your off-grid energy system or start a lucratif business of battery reconditioning.

Smartphones, laptops, cameras, and tablets have their original chargers with specific voltage and amperage.
However, many people use inadequate chargers, what affects their devices batteries.

easy tips and tricks to extend your cell-phone, laptop, Lithium-Ion batteries lifespans, or bring them back to life if they fail you.

Choose between 3 different batteries for your off-grid energy sytem. Read carefully and make a based choice on the battery that fits your needs.

Compare battery types and components is a crucial step before you pick up your batteries for your solar energy off-grid system.

Fully charging your LA battery can extend its life. if you opt to recharge your Lead-Acid Battery yourself, be cautious when you get your equalizing charger.

The Battery Revolution. Ultra Fast Charging

Audi Electric Motors Production

BMW i3 Electric Cars – PRODUCTION

Top 10 Energy Sources of the Future

Renewable Energy 101 | National Geographic
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