Thanks Dan.
In my case the lipo batteries are new and just have wires hanging out. The multimeter idea is a good one .

Got lucky - just tested and both batteries came from SXK at resting voltage of 3.8V
Thanks SMT.I found this page on lipo batteries. It has much lipo info that might be helpful to you. https://rogershobbycenter.com/lipoguide
It's not a vaping related site but I think the lipo info is solid.
There is a section on chargers and proper storage voltage (3.8v) near the bottom of that web page.
Seems like the model car/plane people are the experts on lipos. Will definitely give that a read.
