older 48v Yamaha goes intermittent

[jeanneo8]

I've been on here about this one before.. I'm helping an older friend who has a 48 v Yamaha. I've gotten her to replace half the batteries in the cart and she has 3 older ones that will still chg to 8.2. She keeps it plugged in between uses and it seems to be going good that way, however 2x I have had to go rescue her. the 1st time, I flipped the tow/run switch a couple times, heard it click and off it'd go, today that didn't work, I had to tow her home, when I went to plug in the charger, I heard a very faint click, so I unplugged it again, flipped the tow run switch, it clicked louder and off it went. So would you think it is the tow run switch or the solenoid? when a friend has come in the past and checked both of those they have tested fine. Thanks Guys :)

[cgtech]

Check how low the voltage is dropping while driving, after driving a comparable distance. I'm thinking you are chasing the weakest battery out.

[jeanneo8]

Originally Posted by cgtech

Check how low the voltage is dropping while driving, after driving a comparable distance. I'm thinking you are chasing the weakest battery out.

I would agree normally, but wouldn't it need more than 10sec on the charger to get it going again? Literally, I plugged it in heard the faint click and plugged it, flipped the switch, louder click and off she went.