Good luck to ya!  I had a Chinese tablet that died after the battery went to zero only a few times.  Took out the battery, brand is American made in China.  Replaced with genuine Chinese battery.  No matter how many times I took the battery to zero, can still charge it back up.  American battery tech lags behind China.  When they quit using Chinese batteries, Tesla cars gonna go the way of Boeing, highly risky death traps no sane country wants to purchase from.