Battery charge time is 2-hours , USB 3., 0AH Battery - 48-11-2131 Milwaukee Tool USB Lithium-Ion 3.0 Ah REDLITHIUM Battery Charger and Portable Power Sourc Milwaukee Battery M18 Ediorxeo For Milwaukee 48-11-2131 Redlithium Lithium-Ion Rechargeable Milwaukee M4 USB Battery Lithium Ion - Batteries - The Home Depot Fits USB rechargeable products This USB 3.0 battery pack delivers up to 20 Percent more capacity for Milwaukee USB Rechargeable solutions compared to the First Generation REDLITHIUM USB Battery (48-11-2130 USB Battery, Battery Capacity 3 Ah, Battery Chemistry Li-Ion, Charger Included No, Number of Batteries Included 1, Voltage 4V DC, Cordless Tool Kit Contents (1) Battery, Automatic Shut-Off No, Battery Series USB Rechargeable, Cordless Tool Battery Platform M4, Overall Height 7/8 in, Overall Length 3 in, Overall Width 7/8 in, Weight 0., 1 lb, Wireless Tool Tracking No