i heard there was a way to fix a 18 volt cordless battery that wont hold a charge anymore.
You have to open up the battery pack and replace the batteries. They are usually NiCD or NiMH. 18 Volts 15 pcs x 1.2 V rechargeable batteries. Use the same size (e.g. AA) and make sure the AH rating is the same or higher than the old ones. Buy replacements at your local Radioshack or electronics store. You need to solder them together in series. Use heavy gauge (14 awg or higher) solid copper wire. You can pound the wire flat with a hammer to reduce its thickness if space is an issue. Use the shortest length of wire possible to reduce resistance. Optional: You can remove the positive end caps from the batteries and solder directly on the positive terminal to reduce resistance. Resistance is a very big issue in low voltage DC appliances because the smallest rise in resistance can cause a large drop in voltage and power. Good luck and save money!
contact Bosch and buy a new battery pack.
It's called responsible recycling. If it won't hold a charge, it's toast.
