HERO sensor and LIGHTSPEED wireless deliver extreme efficiency to let you game for months. It delivers up to 250 hours run-to-die on just one AA battery. It can be adjusted to last up to 9 months of typical use in Endurance mode, which can be selected via Logitech G HUB.Tested on Logitech G240 Gaming Mouse Pad Logitech G HUB, as well as the indicator light on G305, will notify you when 15% of battery remains.