Submitted by docdac on January 14, 2013
Is there any reason to think that charging at a lower amperage is better for the long term battery life than charging at a higher amperage? For example, I can usually 'top off' my battery in 2 hours at 240v 40A with a NEMA 14-50 outlet. So, I could manually dial down my charging rate to 20A or 10A and still have a full charge in the morning. Would this lower charging rate be better for the battery? It seems to me that it would, if you have the luxury of time for slow charging. Does anyone have any hard data on this?