7.2AH battery charge question
I have a panasonic 7.2AH battery I purchased from digikey a year or two ago for an electronics project i was working on. I took it out this week and noticed the charge was at 12.5v or so.. so I used my trickle 1A charger I've always used to get it back to 12.7v, it gets up there but 20 mins later without using the battery it goes back to 12.5v, and I tried several times.. has its lost its capacity allready? i know its a lead acid battery but is it deep cycle? is this behaviour normal?
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