I hate electrical problems.... charging

a simple test light between battery ground cable and battery ground post will show a draw if there is one. Check ground wires battery to block connection and ground strap engine to firewall. Also if you do see a draw then rule out dome lamp etc.., check for a leak at start relay. Once in a while those relays (and silinoids like on Fords) can pass a few volts. Just enough to keep the starter nice and warm LOL