The LiionWholesale 1s1pmj1 is a PCB protected assembly, with bare wire leads so that you can connect it to any device or put on your own connector of choice. Or we also sell it with a 2 pin connector attached. This is a 3500 mAh 10 A battery and is one of the best batteries we offer for any devices that need a high capacity but medium discharge protected battery. It is the same battery and circuit board as our extremely popular 3500mAh button top battery version, just with wire leads instead of the button top.
These are manufactured with a very high quality PCB including a Japanese Ricoh protection IC with three FNK MOSFETs for 20A high current cutoff (most PCBs will not be able to handle this much current). This protection circuit protects the battery from mishandling, overcharge, or overdischarge while allowing the battery to do its job properly.
The cell is made by a major household name cell manufacturer in their Korean or Chinese plant. Our company then adds the high quality PCB along with the wire leads in an ISO certified factory to all safety standards. A black wrap is put over the top to hold it together.
Some companies market batteries like this as 3.7V 3500mAh, this will replace any 3.7V lithium ion with no issue. 3.7V vs 3.6V is just a labeling difference and is not an actual voltage difference inside the battery.