My black and decker kc1882f 18volt drill battery will not recharge whenever plugged in it shows battery full ,and when used only as weak power

http://www.sale-batteries.org.uk/batteries.php/6+146080+black-&-decker+battery

Make sure the charger operates first. If it does, try this. It worked for me. Put the battery in the freezer over night. In the morning put it in the sun for several hours. You must be sure the internal batteries are fully thawed. Then recharge normally. You'll get up to 75% capacity back. If this trick doesn't work, then the battery is not repairable.

Fist you should check that if there is problem with your battery or charger. Do you store your batteries in right way when you don't use them?

You can come here (Power Tool Batteries Drill Batteries Replacement) and find if there is batteries or chargers for you.

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

Its much more likely that your batteries are not charging up properly. Ni-CD batteries suffer from 'memory effect' and can appear fully charged when only 70% charged. Also they lose charge when being stored. Do not short them out to discharge them! Wait until the drill complains that they are flat and then recharge them rather than when they first start to slow down. Do not let become completely flat (less than 1 volt).

Just charge battery put bit in and your ready to go.

The light will turn green once it is fully charged.

NO PROBLEM MOST CHARGES WONT OVER CHARGE YOUR BATTERIES

It is possible to repack the battery yourself , just take the battery apart and inside you will find a set of rechargeable batteries , just replace the batteries with new rechargeables from battery world and repack them as original then put back together and hey presto NEW DRILL ,

Newer rechargable batteries aren't like the older ones back from 5-10 years ago. They do not have a "memory" like old cell phone batteries and cordless tools used to have. So charge it whenever.

Stick it in the charger and when it's charged, the light will stop flashing. Usually takes a few hours for a full charge.

It's not recommended to leave it in the charger for extended periods. Not only does it siphon off your power bill, but it's harder for the battery I believe.

I've had mine for a few years and they done excellent. Just as powerful as the day i bought them.

If they ever do give out, be sure to recycle them, don't throw them away. Lowes and Home Depot have rechargeable battery recycling at the front desks.