I have been stumped on this for a long time. A while back, my keypad gave me an error message, battery low. I had changed my battery for a new one and the error went away. Exactly 1 week later the error message came back up. I checked the battery, and it was down to 10 volts. Not soon afterwards my board went bad. I had my alarm installer replace my board with a new one. I had hooked up my battery to a battery charger that I had and charged it back up to 13 volts. I placed the battery back in the cabinet, again exactly one week later I had the low battery light come on again. At that point, I thought my transformer might be on the blink, so I bought a new DSC transformer. I had taken the battery out again and recharged it on a battery charger again. I put it back in. again exactly one week later the low battery light came on again. I thought at this point that my battery may have been screwed up from charging it on a seperate battery charging unit, I went ahead and bought a new battery again. I now have a new PC5010 board, a new transformer, and a new battery, one week later the battery low error popped up again!!, I checked the VAC on the leds coming from the PC5010 board and I get about 13.5 volts. I checked the battery itself and I get 10 volts, I connect the leads to the battery, and I get a total of 10 volts.
What the hell is going on here? why can't I get this damm thing charged?? please help!!