OK, since it's not a lipo, I need some new batteries. Samsung 25R's, or something else. I'm a bit out of the loop on this stuff.
This is a pretty good thread about the Samsung 25RI personally think the 25R's are a great battery and a great value. Readily available, inexpensive and stable in my experience.
I had a mech stay fired on unbeknownst to me until one discharged down to almost 2 volts. No safety issues then or since.
Charged right back to 4.2 w/no degradation in performance.
https://www.e-cigarette-forum.com/f...-icr18650he2-and-samsung-inr18650-25r.592339/

