Prolong Makita 9120 Power Tool Battery Life Instructions
1. Store the Makita 9120 battery separate from the tool in which it belongs. If it is fully charged, don’t leave it in the charger.
2. Keep the Makita 9120 cordless drill battery in a place that has a fairly consistent temperature.
3. If dealing with nickel based batteries, make sure that the Makita 9120 power tool battery is fully discharged before recharging it.
Charging Makita Power Tool Battery
Years ago, batteries had ‘memories’. If you didn’t let the battery die, or fully charge, the battery would ‘remember’. And the next time you want to charge it fully, it would only charge half way. These days most batteries are memory proof. However, it’s always better to let the battery fully die before re-charging.
If you have a Makita 9120 power tool that’s a few years old and are suspicious that it might have something to do with it’s memory, there is a way to ‘reset’ the batteries memory.
1. Place the battery in the tool and run it until the Makita 6012HD Power Tool Battery goes completely dead. Then leave it attached to the tool overnight.
2. Run the tool with the battery in the morning. If it will run the tool, use it until it goes completely dead. By doing this, you are essentially erasing the memory in the battery and deleting the false empty cycle of the battery.
3. Place the battery on the charge only when it will not power the tool at all. Let it charge fully, which should take overnight.
4. Run the tool with the battery attached until it is again completely dead. Don’t charge the battery again until it’s completely dead.
5. Repeat the charge and drain process several times, and the battery will get better at holding a charge and charging completely.
