Quote:
Originally Posted by Isaac Zachary
I took a 6-cell NiMH charger, charged up each module. I had a discharge meter and large rehostat and dischared and recorded all capacities. Took out the bad module and the two with the worse capacities. Replaced them with three Gen 3 modules from eBay (this is a 2006 Gen 2 I'm working on). I rearanged the modules putting the best where the previous modules had degraded the worse (the middle) and put the worse where they had degraded the least (the edges). Then I wired all the modules in parallel and charged them back up to the same voltage. Then put back together and put in the Prius.
|
Yes - that is likely a year or two solution before another cell goes bad and you have to repeat the process.
Quote:
Originally Posted by Isaac Zachary
$1995 for a hybrid battery that'll last another 15 years sounds good to me. But at $700 per kWh for an EV battery, a large 80 or 90 or 100 kWh battery sounds expensive to replace.
|
Manufacturing cost for Li-Ion EV batteries is $100 per kWh and about $130 per kWh assembled into a pack. A 24 kWh Nissan Leaf pack is $8K or $333 per kWh.
The good thing about big packs in that they can degrade a lot farther and still have useful range. They also aren't stress near as much as small packs in day to day use. The smaller the daily discharge the more full cycles you get and the longer the pack lasts.