Wont work its been charging for a day but it wont work without the plug.

Charge without the key on. Make sure your charger is applying power to the scooter. It may have a blown fuse or some other internal problem. If your batteries were totally discharged your charger will not recharge them. You'll have to charge them individually with an automotive style battery charger that is NOT an automatic charger. It may take 3 days continuous charging to recover enough charge before your scooter charger will continue to charge until the batteries are fully charged. If this doesn't work then the batteries will never take a charge nad need to be replaced.

try resetting it, power it off completely. If still not working check charger on another device to make sure charger is OK. If it is you will need to have it repaired, new battery or charging circuit or new socket

Check the charger is working by using a multimeter to measure the output voltage.

YOU NEED TO GET THE BUTTER OUT LLET HIM ABOU 1DAY OUT THE COPMUTER AND WORK THE COMPUTER WITHOUT PLUG BATTERY AFTER DAY BUT THE BATTERY IN COMPUTER AND POWER WITHOUT PLUG AND CHARGE IF GIVE U EMPTY

Is the AC Power adapter the original adapter of the laptop? If it is, try to drain the battery and charge it for 8-12 hours without using or opening the laptop just charge it. After charging, remove the power adapter as you open your laptop. Make this way a habbit of using and charging your laptop to make the charging and battery life last long.

Check for physical damages on the power cord or teh power brick try it as well on a different Laptop if it does the same thing if the adaptor works fine in a different laptop try plugging the adaptor without the battery on the system try unplugging and plugging it back in if it will work properly without the battery then most probably either your battery needs to be replaced or your systems Motherboard....

also you can try updating system BIOS which is risky, check your Manufacturers website or call them for any information about BIOS updates for the system.

Mda Vario's don't charge when turned off, heres what you do.
cut wire off a usb lead the small end strip the red and black wires, put the red wire onto the posative connection where the battery is it tells you what side is posative and negative on the battery, use black with negative and red with posative making sure that no wires touch the other metal strips in the phone, replace battery plug usb into computer and start up the mda and wait for it to boot. once turned on leave to charge as it will charge through the wires connected to the battery, after 10 to 15 minutes plug in the actuall charger and try to remove usb wires without taking battery out. if that is not possable it is ok as the battery should have enough power to start up once it starts leave to charge and always keep some charge in the phone.

A common trouble is that the solder joints from the power jack to the motherboard can break. This is due to flexing the power plug over time. When this happens the power can't get onto the board at all to run the computer or charge the battery. Sometimes the connections may still work, so you get the intermittent operation you mentioned.

Usually this can be repaired, but it means disassembling the computer to take out the motherboard and resoldering the connections. In some cases, the motherboard can be damaged by heating and arcing from the bad connections and can't be repeaired, but this is pretty rare. A computer shop might be able to do the repair if they get into that level of service.

There are several possibilities. Let's start with the easiest two. First the battery, take it out and try starting up only with the power supply. Then the memory chips. If a memory chip fails it can cause a no start in IBM's. Take the memory out and try it. Then try it, putting them in one at a time. If these don't work, then I'm afraid your problem lies within. Namingly the power management chip on the motherboard. The pm chip controls the power input, and allows such functions as switching between battery and AC, and battery charging. The pm chip can go without warning, and just because it lights and shows charging doesn't mean this chip hasn't malfunctioned. I've had several IBM's come through my shop that have experienced the same problem you're describing. I've also had them with problems like; it will only power with the battery, won't charge the battery, will charge battery and only run with battery shuts down while charging, only power under AC, etc... all pm chip related issues. Unfortunately, the only solution is motherboard replacement.