24v sds.no lights on charger but making humming sound.all 3 batteries not charging.any ideas?

bad battery or fried charger

hi, Sounds like a dodgy charger , check for a fuse on the side that the leads go to the scooter... I offer a free testing service, you only pay the return postage...UK only... One thing check the fuse in the battery pack, the charger will not work if it does not see the battery voltage

Regards
Rob

www.gewizrepairs.co.uk

Sounds like one or both of the batteries has a high internal resistance. Bad batteries, perhaps? Have you LOAD tested or tested for internal resistance? Could be why charger is shutting off so soon.
Voltage isn't the only test for these types of batteries.

Battery may not hold a charge. Even if a battery shows it's charged on the charger you may have a faulty battery. This is a common happening.

Have you tried charging and discharging the battery a few times, sometimes that helps build up the charge.

Batteries plus, heres their number,,,, Call a friendly Battery Expert at 1.800.677.8278

You indicate that the drill is new. I'd suggest you return it for a replacement. Seems to be a defective or wrong charger. If you have problems and If you paid by credit card call the card company and have them stop payment on that charge.

not sure on the charge well have to check out but contact a interstate battery shop thy can rebuild most batteries

Original battery is 130$+, or you can buy replacement for cheapest price (work the same). So, depends from the wallet, choose one... I found them on amazon, take a look:
1. cheapest one (about 30-40$): Amazon com 12N9 4B1 battery
2. Original one (130$+): Finally charging for our multi device world
I hope this was helpful. cheers

My charger (24 v) died also and repair shop wanted too many $ for repair. I happened on-to a charger for a printer (24v 1 amp) at the thrift store for $3.00 and fashioned a connector for connecting to the battery. It takes about 3 hrs to charge the battery but you must disconnect manually. It has been working for many months. It will do for me untill i find a bargan on ebay. The repair shop said that the part that failed was not a component that can be changed. (Multyfunction chip) Hope this helps for the short term. Enjoy