these batteries that you get out of laptops do not contain a bms (battery managment system) nor do most flashlights.There are only a few flashlights that have a bms..For those who do not know what a bms is it is a circuit that will shut off the battery when it reaches 4.2 volts and will shut off when drains down to 3volts.and also if it overheats..There are different types of bms's but they usually all contain at least these commands..without a bms you risk a meltdown of the battery.also 18650 is a lithium ion battery not a lipo......peace ma fellow humans
A button top battery as opposed to a flat top is usually an indication of protection but generally speaking if the battery is longer then that tells you its a protected battery.dont buy anything bigger than a 3400 mAh as it's a fake.3400 is the biggest battery maybe a 3500 by now but certainly not a 9000 mAh.
Yes you can. You will need 8 cells total. 4S2P configuration. Warning: you will not be able to use your old charger. You will need a LiPo battery charger. Attempting to charge them with your old charger (NiCd) may cause permanent damages to the LiPo's or even worse, cause them to catch fire.
www.aliexpress.com/item/Free-Shipping-4-x-18650-battery-Box-Shell-18650-Charger-Portable-Power-SMART-POWER-BANK-Case/1231251938.html Couldn't find it on amazon anymore, but found it on aliexpress.com from where I've purchased the same Aili power banks recently. Good luck.
