Recharge Mower LI-10BATT Lithium Replacement Battery - for Grass Trimmer GTLI-10 & Hedge Trimmer HTLI-10 extends your cutting time to allow for continuous use. The Lightweight, 18-volt unit can be recharged up to three times as often as traditional batteries. There is no memory, so you can recharge the battery at any time during its cycle. Battery Power is consistent throughout the full cycle, unlike traditional batteries that start losing energy within the first few minutes of usage, resulting in decreased performance over the full time of the battery charge cycle.