Brand New Replacement Miwaukee M18 18v 4a Lithium-ion Power Tool Battery 1 Year Warranty LITHIUM-ION battery delivers long life and run time with fade-free power Battery fuel gauge - Displays remaining run-time Prevents user from damaging their cordless power tool investment in abusive situations Use Sony,Samsung,Sanyo Cell 100% new and high quality,Shippment from san francisco,2-10 days for delivery with tracking number.