LifePo4 Charge Performance

pianotuna wrote:
Steve,

Good to know:

"it goes on to say that under -20 they very quickly go to less than 50% of the original capacity which is probbly why -20 is listed as the min operating tempature."

However, the dendrites are why no charging is recommended at low temperatures.

Further to SiO2, over 600 cycles, when going to zero volts, to 80% of OEM capacity doesn't sound bad to me.

I'd be interested to know the same figure for LiFePo4

for the most part you can make any battery last by taking care of it my 6V GC batteries just turned 15 years old this year and are just showing signs of needing to be replaced. I have for the most part boon docked there whole life with a 480 watt solare system and they hardley ever dropped below 70% capacity and only droped below 50% once.

full capacity discharge is 4000 to 7000 on average and depending what format of LifePo4 , the prismatic I see are listed at 4K to 5K cycles at 80% depth of discharge. but I see some that use the 100% dod that it is greater than 2000 cycles, so I guess its depending on the brand and how they choose to rate it. the higher ones in the 7K range are probably the flashlight battery design used by battleborn, tesla and a lot of others.

Steve