"geezer" wrote in message
...
I have trouble starting my rider after it sits a while. If I put my
10A charger on it for some 10 minutes, the mower starts fine.

I find no evidence of a drain on the battery.

The battery is relatively new, one year. I replaced earlier battery
with same problem.

The battery shows 10V when it won't start the mower.

The 10A charger causes my meter to show some 15V at the poles when
charging.

If I let it go for a while, then disconnect the charger, my meter
shows 11-12V at the battery poles,

The charger cuts back normally, but I would expect it to start at 10A,
then drop eventually to close to 0. But, it starts out at only 2-3A!
I am wondering if that is a give-away.

Any thoughts?

The first thought is why do you have to charge it ? Have you checked the
voltage with the motor running to see if the mower is charging it at over 13
volts ? Maybe closer to 14 or 15 volts.

If the battery is depleated, I would think it would also take much more than
the 2 ot 3 amps the chatger is putting out.