The Bosch GBA37V10 3.7-Volt Lithium-ion Battery delivers greater runtime than standard AA batteries for select Bosch products, allowing adaptability and ease of use. It provides about 60% more runtime than AA batteries at normal room temperature and the GBA37V10 is not as affected by cold temperatures as alkaline batteries. The battery features convenient USB charging. It can charge using various 5-VOLT power supplies, such as power adapters, PCs, laptops or portable power banks, for maximum flexibility. And it charges fast, takes only 15-minutes to charge, for 30-minutes of laser operation.