When not in use, NiCd batteries lose 1% of their charge per day. After three and a half months, the battery is completely discharged, damaging the battery.

Ni-Cad batteries cannot be fully discharged (voltage below 1 V per cell). This damages the battery. Exercise Your Battery - Do not leave your battery dormant for long periods of time. We recommend using the battery at least once every two to three weeks. If a battery has not been used for a long period of time, perform the new power tool battery break in procedure described above. This 628587 cordless drill battery replacement is guaranteed to meet or exceed original specifications. Breaking In New Batteries - new cordless drill batteries come in a discharged condition and must be fully charged before use. It is recommended that you fully charge and discharge your new battery two to four times to allow it to reach its maximum rated capacity.There are several steps you can take to insure that you get maximum performance from your cordless drill battery:

This ABP118W1 cordless drill battery replacement is guaranteed to meet or exceed original specifications.

Preventing the Memory Effect - Keep your cordless drill batteries healthy by fully charging and then fully discharging it at least once every two to three weeks. Exceptions to the rule are Li-ion batteries which do not suffer from the memory effect. Thanks everyone....it arrived today.....have charged the Makita 1835 and running as we speak...great service......hopefully we will do more business.....I may get another battery. Hi, Just letting you know that we recieved the batteries today. Thanks for the service that you have provided to me. Thanks

To avoid the "memory effect" you should perform a "full recharge cycle", Run the device under the battery's power until it shuts down or until you get a low battery warning. Then recharge the battery as instructed in the user's manual. Hi, Your Ryobi battery prices are great and I have already recommended you to one associate and will tell others.(*Received the Makita BL1430 yesterday morning. Thank you very much for your speedie service; much appreciated.