I have read that to keep a healthy lithium ion battery, it should be charged between 20 and 80%. I have a fox ecs2900 with a fox inverter and solar panels.
There appears to be no restriction when charging the battery from the solar panels - if there is enough light, then it will be charged to 100%. Also, the invertor allows for forced charging to 100% from the grid.
Is it ok for battery health to always charge to 100% whenever possible?
Lithium ion (Li-ion) is different to Lithium Iron Phosphate (LifePo4 aka LFP), your batteries are LFP and you will get the best out of the if you make sure that you do a 100% charge at least once a month (or your SoC accuracy will drift), and also set your minSoC to 10%. The batteries are warrantied for 90% depth of discharge (100%-10%) so best to use them as the manufacturer intended.
Thanks for the reply. Yes I understand the need to charge to 100% about once a month. But for daily charging is it OK to set soc to 100% or is it better at 80/90?
I charge mine to 100% daily, and don't worry one bit.
Most batteries don't like being "stuck" at 100% SoC for a long time, but at home this typically doesn't occur for very long before the power is used. So provided you don't charge and hold your battery at 100% SoC for DAYS, without any discharge you will be ok.
The cells will typically withstand 4000 or 6000 cycles before they have degraded to about 80% of their original capacity, at one charge/discharge per day, that's about 11 years / 16.5 years! By this time, the battery pack should have been more than paid for itself, and you can replace it with something from the future, with hopefully better capacity and cheaper (hopefully)
Most batteries don't like being "stuck" at 100% SoC for a long time, but at home this typically doesn't occur for very long before the power is used. So provided you don't charge and hold your battery at 100% SoC for DAYS, without any discharge you will be ok.
The cells will typically withstand 4000 or 6000 cycles before they have degraded to about 80% of their original capacity, at one charge/discharge per day, that's about 11 years / 16.5 years! By this time, the battery pack should have been more than paid for itself, and you can replace it with something from the future, with hopefully better capacity and cheaper (hopefully)