Excellent!!! I got a new SLA, and a multimeter and a 12v bulb.. and rigged up that propsed charging circuit... before doing so, I checked the voltage on the dead SLA and it was under 6 volts... well below the 8.1v final voltage listed for SLAs by powersonic so right away that's obviously the problem.. anyways, I rigged up the circuit and it took about 20 mins or so before it would accept a charge with the charger and now it's charging fine... it's up at like 11.9v... the only weird thing that happens is that when I take it off the charger, and then check the voltage, it slowly decreases.. like it drops by 0.1v every couple of seconds... is this normal?