A typical equalization charge for a lead acid battery is slightly over 15v. ?A few hours a month at 15v is not a bad thing, though if it's got inspection caps then the water levels should be inspected occasionally. ?He says it's a small solar panel, so likely just a few hundred ma. ?If worried, I'd add an LM2940T-12 between the panel and the battery, with a resistive divider rigged for a 14V ouput voltage as per the LM7805 datasheet. ?(The LM2940 has a lower dropout voltage than the LM78xx series parts.)
On Tue, May 16, 2017 at 03:04 pm, Clark Martin wrote:
Do you have a solar charge controller? ?It doesn’t sound like it. ?15V is bad for the battery. ?It will cook it and will shorten it’s overall life.
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