Your Makita cordless drill isn't very useful if you can't charge the battery when it's empty. On this page, you can find Makita battery chargers so you can quickly and efficiently provide the batteries with sufficient power. Keep in mind that the battery charger needs to be suitable for the voltage of the battery you want to charge. You can't charge a 18-volt battery with a charger for 10.8-volt batteries and vice versa.