DIY Lithium Battery "Active Cell Balancer" Explained and Tested. Great for LiFePO4!

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Patriot Power Cell review (handheld solar power bank)

This incredible “pocket solar generator” keeps selling out:

High Capacity:
The 8,000 mAh lithium-polymer battery provides plenty of emergency charging power whether you’re in a crisis and need to charge up, or you’re simply out for a hike or camping with the family.

Charges With FREE Power From the Sun:
The 1.5-watt solar cell provides integrated charging… so even if the internal battery is dead, you can recharge the Patriot Power Cell wherever you have sun.

Charge Two At Once!
Two USB ports let you charge 2 devices at once, doubling your ability to keep in contact with family members or emergency responders in the event of a disaster.

Works for ANY Phone:
Use the included USB adapter or plug in your current charging cord.

Built-In Emergency Light:
The LED flashlight gives plenty of light so you’ll see your way clear, even when the lights go out. And a second emergency S.O.S. setting sounds the alarm when you really need to let someone know exactly where you are.

Easy to Use:
A 5-LED power meter means you’ll always know how much power your Patriot Power Cell has… no surprises here!

Water-Resistant and Durable:
The rubberized exterior and weatherproof USB cover mean it can withstand anything from a light mist to a full torrential downpour. And the rubber exterior doubles as a cushion from shocks. No worries if you drop it or knock it off a table.


DIY Lithium-ion Cell Charger using TP4056 module with Battery Protection


Laptop Battery Teardown:

In this video i’ll build 18650 Lithium cell charger using TP4056 charging board with battery protection.

This charger uses 2 steps charging. constant current and constant voltage. as you can see in data-sheet of TP4056, when battery voltage is below 2.875 volts it charges battery at 100 mA and as soon as battery voltage rises to 2.875 volts it starts charging at 1 ampere until battery voltage rises up to 4.2 volts. at 4.2 volts it switches to constant voltage and charging current decreases. Charging current can also be changed by changing a resistor.

18650 Battery Holder:



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Charging Cables Android, Cebkit 5Pack 6FT Micro USB Cords Cell Phone Chargers

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Charging Cables Android, Cebkit 5Pack 6FT Micro USB Cords Cell Phone Chargers High Speed Compatible Samsung Galaxy S6 S7 Edge/active/Plus, LG stylo 2/3 K20 plus K8 K7, Tab S2 S4, Note 3 4 5, Colorful: Cell Phones & Accessories
5-Pack Android Phone charger cords, Compatible for Samsung galaxy S7, S7 Edge, S6 S6 Edge, S7 S6 active, S6 Edge Plus, Note 5 Note 4, Galaxy J7, J5, J3, j7 prime, LG Stylo 2/3 Plus, Tablet S2 S4, LG Q6 G4 G3 G2 V10 K20 K20 Plus K8 K7 K4 K3 K10 V30, LG aristo, LG Phoenix 3/2 Plus, LG fortune 2, Kindle fire 7 8 10, Motorola E4 G4 G3 G5 G5S Plus G6 Play, Sony Xperia Z2 Z3 Z3+, HTC one M7 M8, Nexus, Nokia 6, Nokia Lumia, Blackberry, PS4, Xbox & Most Android devices
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Premium Durability– The stainless steel connector heads slot is easy and steady, and won’t get loose or fall out of your devices as your normal Micro USB Charge cables, can bear 8000+ bending test
Extra Long Cords– 6FT Lengths of Micro USB Chargers meet all your needs, you can lie on the sofa and use your devices while you are charging, put 5 different colors for using on couch, in bed, in car or share your friends as a gift, so so convenience !
What we offer– 5-Pack 6 feet phone cords charger Android, Upgraded!!! + thoughtful after-sales service. If you have any question, We will reply to you within 24 hours and 12 months warranty ( refund or replacement ) 😀
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Android Charger FiveBox Braided Charging
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Android Charger Braided Compatible Samsung
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A look inside a charging battery cell. But did we recover it?

Final video in the battery maintenance series.

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Review: Battery Bank Solar Charger, 30000mAh – Hand held, LED Light, Dual USB Charger for Cell Ph.. – Battery Bank Solar Charger, 30000mAh – Hand held, LED Light, Dual USB Charger for Cell Phones, Tablets, GoPro Camera, GPS, etc. by Javary
High capacity 30,000 uAh, palm sized, battery bank solar charger with two USB ports. Most phones hold about 2,000 uAh. This hold 15 times that. Recharge your phone many times on one solar battery charge. Use the sun as a renewable energy source to trickle charge this solar charger at 200 mA when camping, backpacking, or any time wall outlets are not available. Fully charge at 1000 mA using included wall outlet adapter before first use. Impact resistant, water resistant, rubber casing. Three, 3 ft data / charge cables, wall charger, velcro strap, and carry bag included.

Check this out for more info –


Mini Handheld Fan with Cell Phone Holder Review

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FTEOX Mini Handheld Fan with Cell Phone Holder,Portable Desk Stroller Table Fan,Folding Electric Fan with USB Rechargeable Strong Wind with 3 Speed for Outdoor or Indoor Activity (Blue, Φ 3.6inch)

▶[REMOVEABLE FAN GUARD & PHONE HOLDER]-Unique Mobile phone holder design,adjust to any angles and removeable,hands-free to any posture in watching TV and play games,can avoid vertebra fatigue,which makes you cool and refresh.ONE PRESS operation design can remove the fan front guard easily and quickly.
▶[MULTIFUNCTION & PORTABLE]-Handheld fan and phone holder 2 in 1.Put it inside in your backpack,it will does not take up space,great for traveling in hot weather,wherever you go,Handheld Fan will be right here cooling for you.Especially suitable for summer travel or outdoor sports.
▶[POWERFUL WIND & 7 FAN BLADES]-Strong wind with 3 Speed,just press the gear button repeatedly to adjust the speed,Mini Handheld Fan will meet your cooling needs in the summer.Wind concentrated with 7pcs fan blades design,the best summer gift for your family and friends.
▶[USB CHARGEABLE & LONG WORKING TIME]- This low noise fan can be recharged use usb connection to a PC and a mobile power supply.Reduce the trouble of changing the battery to you.Convenient charging makes you enjoy cool wind no matter where you go,and it can works 2.5 to 7 hours after full charged.


Color:Blue/ Pink/ White/ Navy
Material:ABS/PP/Electronic Element
Net weight: 163g(0.35lb)
Product Dimensions:182.5*95*37.2mm(7.1*3.7*1.5inch)
Power Type: USB rechargeable battery
Charging time:Approx.2.5H
Output Power:4W
Input Power:DC5V-0.8A
Battery Voltage:3.7V
Battery Capacity:2000mAh
2 in i
Handheld fan and phone holder 2 in 1
Unique Mobile phone holder design,which adjust to any angles,what’s more,it is removeable.
Without phone holder,also stand steady.
Why choose Our Handheld Fan
Unique Design:

Removable Fan Guard,Clean Fan Blades Easily
7 Blades
Charge Ways:

Power Bank
Wall Charger
External USB
Car Charger
Usage Time:

Low speed wind 7 hours
Mid speed wind 4 hours
High speed wind 2 hours
Widely used in different situations:
Wide applied for all age groups and situations. Can be used in working time, studying time in office, library, and classroom.
play games
Indoor activity
Can be used on your leisure time, such as chatting, watching video, sleeping,playing games.
Outdoor activity
Especially suitable for summer travel.Portable size makes it perfect for your kids.


ChargeMe: A Coin Cell Battery Charger.

Support my project:

I make a lot of coin cell powered projects and use the LIR2032 batteries quite regularly. The rated cycle of the LIR batteries are 500 cycles but in reality, it does not last that long. I did a bit of research and found out that the cheap Chinese charger was the culprit. Another thing is that you need to insert two batteries at the same time to charge. The voltage and charge of two batteries will be different and this will eventually ruin one of the batteries.


Kshion Ultrathin 12000mAh Portable USB External Battery Charger Power Bank For Cell Phone Blue

Kshion Ultrathin 12000mAh Portable USB External Battery Charger Power Bank For Cell Phone Blue, Kshion Ultrathin 12000mAh Portable USB External Battery Charger Power Bank For Cell Phone Blue


Best Cell Phone Cables ! Yoobao Power Bank Portable Charger 20000mAh Huge.. – Yoobao Power Bank Portable Charger 20000mAh Huge Capacity External Battery Charger Pack with 2 USB Output & 3 Input, Digital Display Compatible iPhone Android & More – Black
20000mAh Capacity – A good charger is pretty much a requirement if you travel on long trips, give 7 full charges to iphone 8, 4 chargers to the Galaxy S8 or twice charges to the iPad mini. (Note: It’s 15oz, a brick, maybe not ligthweight for girls to carry in the purse. the iphone x is 6.4oz) Triple Input – Design of 3 input ports (Apple/Micro USB/USB-C). It is convenient for users to recharge both your phone and power bank with the same cable, take your trip easy and ease. Dual Output – Dual USB outputs allows for simultaneous charging of your iPad, iPhone, Android, or most devices. With all that fast charging you can top things up quickly and easily when you’re on the go. Smart LED Digital Display – Shows remaining power percentage in digital and the display is accurate to 1%. (90% of all other power banks never have this feature.) What You Get – 1x Yoobao 20D 20000mAh Power Bank, 1x Micro USB Cable (Note: Apple cable and USB-C cable Not Includede), 1x User Manual, and the 18-Month Warranty. Contact us with any questions or concerns – We are here for you.

Phone Charger 5Pack 3FT 3FT 6FT 6FT 10FT Nylon Braided USB Charging & Syncing Cable Compatible with Phone XS MAX XR X 8 8 Plus 7 7 Plus 6s 6s Plus 6 6 Plus and More