When i went to charge the battery after using it , the piece i plug in started smoking.....and now i cant charge the battery. I bought it used its an older model

I don't think it matters my battery went dead and i didn't buy a new one because I only use it at home so I only use the power cord

Your regulator may have went bad. The regulator converts the ac charge produced from the alternator into the DC volts required to charge the battery. When they fail they can put out 5 times what the battery needs. Depending on your bike the regulator may be separate from the alternator. You should pick up a cheap volt meter. Once you get the bike running, use the volt meter to see what the bike is charging at. If you find the charge is above 14.8 V or that the voltage fluctuates to the extreme, ex. 14.2v, 8.2v, 12.7v all within a few seconds. then the regulator is probable. Another problem I have found is that the ground wire for wiring harness does not get hooked back up. This is a smaller ground wire that may plug into the main ground cable or sometimes is a separate lead connected to the battery. This will fry an entire system.

try a teck shop like jaycar-tandy- radio shack or any shop that sells the bits and pieces used in the radio assembly hobby.

Those things are like a little garden tractor battery inside
If it went dead over time and got frozen the battery may
be bad ,whey don't seem to do well unless used often.

In the Kodak cameras of that vintage the original 3V rechargeable battery was made of 2 regular AA rechargeable batteries and a special piece of plastic that pushes some microswitch in the battery compartment. If this piece of plastic is missing, the dock would not charge the batteries. You either need the special CRV3 battery or to charge the normal AA rechargeables with a separate charger.

try to change your charger cable

battery start smoking & get very hot as soon as put in drill 925dc

I'd say it's the motherboard that's been damaged somehow. If it's a recent purchas don't wait and use the warranty.

the battery isnt lasting because it needs to be fully discharged (drained) before it is recharged. (this is only for nicd batteries)

cud be your onboard voltage regulator for the battery charging. if you remove the battery and use the external power source does it smell also?
if the battery charges normal out of the unit, and the laptop works well with the AC power unit without the battery, then it's your voltage regulator for the batt charging