I designed a wearable with a 3.7V Li-Po battery (381018). Everything worked good at the begining and now after 6 months I realize some circuits are not charging anymore. For what I understood when I was doing a small research about this problem, I found out the overdischarge protection of the battery is 2.V6 and the battery management controller (MCP73831) has a UVLO of 3.45V.
1.-Is this the reason why they don't charge anymore?
2.-I talked with the manufacturer and they told me the highest overdischarge protection for that size of battery is 3.0V. However, i can't find a controller with lower UVLO. Any suggestions?
Note: I can't increase the size of the battery because the moulds are already made.