[melnick]

I left my cart for 2 months in Palm Springs (>100-deg) and am having a charging problem for my 2009 RXV The battery indicator on the cart reads 1/4. I tested and found the voltage of each battery to be around 12v (48v from battery 1 to 4) - don't understand this inconsistency. When I hook up the charger I get 4-6 fast red lights (hard to count them) and then a single red light every 5 seconds. I've hooked uo the charger for a few hours but nothing changes. My first thought was that the battery voltage was too low for the charger to kick in but the measurement of battery voltages indicate that they are OK.

1) Could it be that the batteries are charged but the meter is faulty and the charger is faulty (unlikely)
2) Batteries are too low in voltage even though testing in an unloaded scenario shows them to be at 12v.
3) Charger is faulty.

[Sail41]

According to the owners manual, you have a bad battery and as I just found out maybe more than 1. A Hygrometer will give you a better indication.

[kstew43]

our 2007 Yamaha does the exact same thing, all the lights blink red at the same time, soon after appearing to be charging. All we do is take out the charger from the golf cart and replug it in or wiggle the connector, seems sometimes it doesn't get in the hole tight enough, and it stops. our trojans are only a year old.

you might give that a try.

[TechGC]

If you have the black, or silver small charger with the fins- those are garbage.
If the cart runs, it has enough battery power to turn the charger on. If you do have a bad battery that is dropping out, chances are the cart will not run.