The Makita BL1850B (197282-4) Lithium-Ion Battery, with an unbeatable 45-minute charge The Makita BL1850B battery is lightweight and shock-absorbing and has an unbeatable 45 minute charge time. It has a charge level indicator with four bars to show how much power is left. Features: Foam cell technology Charge level indicator Longer run time and battery life Unbeatable 45 minute charge time Works with your current Li-ion Chargers Same weight and size as 3Ah or 4Ah battery Slide on battery - firm holding with multi contacts and shock absorbing pack, will not puncture and remains cool even in heavy use PLEASE NOTE - when new, these batteries require about 6 to 8 full charges to reach their optimum performance Specification: Voltage: 18v Weight: 0.6kg Battery Ah: 5.0 Ah Battery Type: Li-ion