Quote:
Originally Posted by Eco Battery
If you have a 42V pack then it needs to be charged at minimum of 46V. So theoretically the best you can get is 355W/46V=7.7A charging, however with PV panels you are typically going to get 80% of the rated watts, so around 5A-6A max will probably be more realistic. 6A is still solid for extending run time if out in the sun all day.
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Fair point about the panel putting out slightly less. It's a 36 V Battery pack but due to the cells being optimally charged at 3.6 V I assumed I only needed to charge it at 43 V Give or take This is how I have manually charged and equalized other lithium battery packs in the past off of a power supply