morning a question for you i have a lead wet battery i had it on trickle charge while i was away when i took it off charge it was at 13.6 volts and when i next tested it after 3 hrs it was at 12 .88 i expected this 3days later it had dropped to 12.77 and 2 days later to 12.7 is this consistant with a healthy battery ? ps this is not on my m/home thanks