The batteries are wired in series. If one goes bad, you have to test them one at time. Kinda' like old Christmas lights used to be. They say it takes a week and a half to test them all. But usually you only have to check 3-4000 before you find it. GM designed the batterypack for Tesla. It was rumored that Dorman started engineering an aftermarket replacement 2 hours and twenty minutes after GM was awarded the contract.
Only kidding. A good start. Tesla says the batteries should last 100K miles. Don't know if they are warrantied for same. 3 1/2 hours for a 250 mi charge. Curious to hear if the needles spin off of your electric meter during charging.
1995 SE ..Green and Rattle Can...234K mi...Bonnie (she'll outlive me)
1998 SSEI .. White ..119K mi...Evey
1996 SSE ..MajTeal..157K mi...4/12- Dealer trade full of Lucas Trans fix