48V charger may not be working?

EZGoRider

I posted previously under title "Desulfating". Here's what I've done.
Traded old 98 gas EZGo for 2010 EZGo 48V electric on Oct 2. Brought the car 55 miles to my storage at golf course. Plugged in charger. Got flashing green light. Left it charged in and went home. Next day went to golf course. Made sure batteries had distilled water in them. Charger showed red blinking light...2 quick blinks, pause, 2 quick blinks...etc.
Emailed the dealer. He said the connector was probably dirty. I cleaned the connector real good with .177 caliber gun brush, sprayed with Electrical Contact cleaner. Plugged in charger..still get red blinking lights. I left the charger unplugged and used the cart on Sunday, Monday, Tuesday, Wednesday and Thursday. Went back Saturday morning and plugged in charger. Still got 2 red blinking lights. Went back today (Oct 6) and cleaned battery tops thoroughly with mild baking soda solution. Checked all batteries with load/volt meter. All showed "weak" but none showed bad under load. Checked with volt meter. All batteries read 7.89 V.
Hooked up 8V charger to battery number one (isolated) and let it charge for 4 hours. Called the dealer and told him what was going on. He said to bring the charger back so I'm taking it in tomorrow for testing. Meantime I intend to charge each battery separately with 8V charger. It's only a 1.25 amp charger so it takes about 4 to 5 hours to charge each battery. I'll post further details once I find out if charger was inop. Thanks.

BGW

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bigstik40

It's good that the dealer will work with you on the charger. If it turns out that the charger is bad and he will replace it, see if he will give you one of the older transformer type Powerwise chargers. The QE chargers are really not very repairable once they fail.

After a round of golf, at 1 1/4 amps you will have to individually charge your 8 volt batteries a lot longer than 4-5 hrs each to bring them to anywhere near a full charge. Can you borrow a charger to see if that may help you figure out your problem?

Like I indicated before in the post that dissappeared, the 2 red led blink - pause, 2 red led blink - pause, indicates low or high battery voltage. Dealer may be correct when he said dirty/ poor connections. I know you cleaned, but could also be poor connection problems. Here's hoping he will help you out. You really need to get those batteries charged up ASAP because letting lead acid batteries sit in an uncharged condition is very bad for them. Good luck - RAY

EZGoRider

I didn't mean to imply that I was going to charge each battery separately after each round of golf, just enough to get the "big" charger to kick in. You are right, it may take longer than 5 hours.

EZGoRider

I took the charger back to the dealer today and he tried it on one of the carts in the showroom. It didn't work. He got a different charger and tried it and it worked, so we traded. I took the one he gave me back to the golf course and plugged it in and it is now charging my cart for my Thursday scramble. Thank you to AACO EZGo in Evansville, IN for being a good place to trade.

bigstik40

Hey, that's great. Glad you got a good resolution!! Remember, charge those batteries religiously after each use and make sure you let the charger finish (shut off automatically by itself). That will insure they get a full charge. For longest battery life you should try to never discharge below 50 % SOC, 80% would be even better if that is possible. Good luck - RAY