Alkaline and Long Lasting Li-Ion battery options The Leica Rugby 600 and 800 series rotating lasers are delivered with the unbeatable Lithium-Ion batteries assuring more power and excellent working times. The smart technology of the li-ion batteries constantly monitors the status of the batteries to provide the user with accurate information regarding the remaining battery life. Quick charging means that with only a half hour charge the user can work for up to five hours. A600 Li-Ion rechargeable battery pack 4.8Ah for Rugby 600 Series Lasers A800 Li-Ion rechargeable battery pack 7.2Ah for Rugby 800 Series Lasers