We have a cordless black&decker drill machine. 18v, we need only the charger & extra battery. Because we burn the charger. We need your help,where we can buy?

Sorry, do not know which charger, what brand of your drill is, so can not help you. But, you can find it yourself in the below link, there are so many cordless tools battery charger, Bosch, Makita, Black & Decker, AEG and so on. Power Tools Charger

it is probably the brushes on the motors are wore out or stuck and not making contact. pretty much junk unless you feel confident enough to attempt repair.

If you need further help, reach me via phone at https://www.6ya.com/expert/steven_a67ead41eb5fc62a

Generally, When your have the 18V milwaukee drill, you had better to use the same voltage battery charger to charge the battery. it will be more safe.
John.
http://www.anybatteries.com.au/battery-model.php/Power-Tools-Battery_milwaukee.html

Either the charging adapter is faulty or the battery is worn out.

If the recharageable battery is more than 3 - 4 years old then the battery could be worn out.Rechargeable batteries have a finite number of charge and discharge cycles andwill lose their charge capacity over time, i.e. won't charge to 100% andgradually the charge reduces until the battery won't charge up at all. OR Thebattery shows a 100% charge but when the adapter is disconnected the batterydrops off to zero capacity in a very short time. If the battery drops to anunacceptable charge level then the battery needs to be replaced.

could be either one. Have you tried another battery? If not I would recommend taking BOTH in for inspection. They have a scanner that can detect if the battery has a problem. If you need to find a service center close to you go to dewaltservicenet.com and they have a locator. Let me know if you need more assistance.

Chargers will out last batteries by a long time.You will need to get a new battery. Black & Decker is a cheap household brand and does not hold up for long periods of time. I have better brands and buy several new batteries every year.

There are light on chargers, some red some green, red means chargeing, green mean charged.

u can call black&decker and get one that way or go to your local hardware store or the place you bought it from and you should be able to get another one.

The light will turn green once it is fully charged.

I don't know if I would try this or not. there could be a difference in the amps and usually a charger is designed to shut off or go to trickle when the battery is fully charged.