Li batteries at 48vdc
After much deliberation and questions, I'll likely be purchasing the 48v Lithium battery pack instead of 4-12v. I liked the idea of 12v batteries for weight and ease of handling, but the possible cel...
Forum Discussion
time2roll wrote:
The only gamble I see is whether this battery will last 5, 10 or 20+ years.
I do find it odd that the specs call for 3000 to 5000 cycles but 80 percent capacity at 2000 cycles.
I wonder how an old battery with significant capacity loss would pair with a new in parallel. Could take a couple decades to find out since this stuff is so new.
Yes, I read that if you use 90% of capacity you get 1000 cycles.
But even that's quite a lot for most people. Not full-timer boondockers though.
pianotuna wrote:
Wow 5 grand for 100 amp-hours. I'm totally amazed at that price.
But at 48V. So 4.8kWh.
Discovering with my 24V battery bank that it's less confusing to think in kWh.
If you can get 1000 cycles with 90% usable from these, that's 4.32kWh usable over 1000 cycles.
I have 4 FLA GC2s, 440Ahx12V or 220Ahx24V now, or 5.3kWh with max 55% usable for 1000 cycles, or only 2.9kWh. Premium Trojan GC2s can do even better.
So yes, you do pay a lot for all the advantages of Li ion batts.
EDIT: just dug up the life cycle chart for a Trojan T-105RE, their top of the line GC2. They claim you can discharge upto 82% of their Ah capacity 1000 times. That would be 4.43kWh usable over 1000 cycles, better than these Li ions.
