4.0Ah Replacement Lithium Battery for 21V Makita Battery Power Tools, Impact Wrench, Pruning Shears, Leaf Blower, etc 21V LITHIUM BATTERY: Capacity: 4000mAh. | Voltage: 21 volts. | Battery type: Lithium-ion. SAFE BATTERY FOR 21V TOOLS: This replacement battery is compatible with many cordless tools and features overcharge, overdischarge, overtemperature, overcurrent, overvoltage and short circuit protection. WIDELY COMPATIBILITY: Compatible with ALLEN ADMOND impact wrench，pruning shears，leaf blower. And Makita 21V battery power tools. Fits Makita 21V MAX cordless screwdriver, flashlight, cutoff saw and impact driver. Custmer Support: Battery come with 7*24 hour technical service. If you are not sure whether this battery is suitable for your tool, please contact us for consultation.