Freedom 959 Scooter won't charge

Hi, if the pack voltage is in the neighborhood of 42-43V, that's fully charged., which would mean your problem(s) lies elsewhere. The controller is usually one of the first places to look, but don't forget the simple things like main fuses and bad/worn out throttle.

I really need more details about your system, but things to look at are: What type battery is it, how many, are connections all secure and clean, was the battery ever over-discharged or put away in a "DEAD" condition? Lead acid batteries sometimes SULFATE if left in a dischaged state, and then they will refuse to accept/hold a charge. Lithium batteries should never be discharged below a cell voltage of 2.5 or 3.0 volts depending on exact type. Have you measured individual cell/battery voltages? (If possible, measure while attempting charge, and again after 3 hours or more sitting time.)-Bob

I have discovered that the normal freedom 959 battery is three 12 volt lead-acid batteries in series. Using a digital voltmeter, (available from radio shack and others) measure each battery separately. during charge, voltage should be between 11 and 14.5 volts at each battery, and voltages should be near the SAME at each battery. If big variations are seen, expect poor connections and/or defective battery. Connections may be cleaned by removing them, cleaning the metal with a wire brush, and using baking soda + water to neutralize corrosion. Dry everything afterwards, coat with a little grease, and re-assemble, making certain all connections are tight and secure.--Bob

I didn't see confirmation that the small buss fuse in the charging circuit is good. If this is the model I think it is, typically there is a small, black, twist-off cap on the side of the scooter deck that houses the buss fuse which protects the charging circuit. I have seen warranty cases where scooter will develop power with the charger connected but the batteries never charge. Scooters runs for a bit on the initial factory charge, but then never recharges. Sometimes this small fuse is located under the deck in a low end plastic fuse holder. Not to be confused with the larger, typically blade type fuse in the power circuit.

Harvey
www.neoscooters.com

When the charger is plugged into the scooter it shows about 41 volts on the battery pack which is the same voltage that is coming out of the charger but when I take the charger off it sets around 24 volts and drops off after sitting over night to around 19 volts.

This means that your batteries are dead. There's nothing wrong with your charger. Luckily, batteries are cheap, and you can be riding again within an hour of the UPS man dropping the new ones off.