I'm attempting to source replacement batteries for some medical devices (digital goniometer, inclinometer, etc.) The markings are:
GMB063048 3.7V 800mAh 2.0WH 2010.12.08 R
I've found batteries of suitable size and capacity (6mm x 30mm x 48mm, 850mAh). My issue is that the OEM batteries have a 3rd blue lead attached to a thermistor that is connected to a charging circuit on the main PCB.
All of the batteries I've been able to locate have only 2 leads. I find myself ignorant and frustrated here. Will I need to order a 2-lead battery and then simply connect the thermistor to the negative terminal in order to make this work, or is there a search term that I'm missing (being ignorant of battery configurations and features) that will help me locate what I'm looking for?
Thanks in advance for your advice and knowledge. I was raised by an electrical engineer, and consider myself an advanced hobbyist. I know very little about batteries, though.
My plan is to keep the existing thermistor and reuse it on a replacement LiPo cell. If it's too much trouble to explain why that's a terrible idea (if indeed it is), then a pointer to a resource I can use to teach myself the pertinent details would be fantastic.