Rechargeable Lithium Battery Link
Since most rechargeable lithium batteries are 3.7 volts or multiples series thereof I found this article to be useful https://learn.adafruit.com/li-ion-and-lipoly-batteries/voltages
Forum Discussion
Harvey51 wrote:Cell phones, laptops and cars have battery management systems that do cell balancing and prevent overcharging and overdischarging. And those also require cooling. A standalone LI cell has none of that. You need a BMS with LI cells. See the DIY EV forums on how to do this. You won't be able to buy Lithium Polymer cells. AFAIK, no one sells those to the public but you can get LiFePo4 cells all day long (EV car guys use them also the 18650 LI batteries are this type...the 18650's have built in BMS's). They are a LOT less volatile than the Polymer cells and you can get BMS's for them.
gdetrailer, those cautions for Lithium batteries are beyond reasonable! Do you remove the battery from your cell phone when it is not in use? I replaced the one in my iPhone, no trouble at all.
