Makita Max XGT® Cordless Tool Battery, 40 V, 4 Ah, Lithium-Ion (BL4040)

Max XGT® Cordless Tool BatteryNew battery cell designed specifically for prolonged heavy-duty professional applicationsImproved impact resistance versus 18V lithium-ion batteries due to shock absorbing internal structureWaterproof, triple layer structure and terminal walls protect against cell failure due to water or dustDigital communication between battery, power tool and charger4 LED battery charge level indicator lights displays approximate remaining battery powerOptimum charging system regulates thermal, voltage and current during charging cycle to ensure battery cannot be overcharged or overheated during the charging processUse with Makita 40V MAX XGT Li-Ion Battery Charger DC40RA100% charge in just 45 minutes80% charge in just 31 minutes