The MILWAUKEE REDLTIHIUM USB 3.0AH Battery provides more runtime, longer life, and faster charging. It delivers up to 20% more capacity for Milwaukee USB Rechargeable solutions compared to the First Generation REDLITHIUM USB Battery (48-11-2130). The higher capacity provides longer runtime and more power for performance in every Milwaukee USB Rechargeable solution. These Milwaukee USB rechargeable batteries deliver up to 1,000 recharges for a longer life out of a single battery. Get back to work faster with 3X faster charging times when charged by a Milwaukee USB Rechargeable product or the REDLITHIUM USB Portable Power Source & Charger (48-59-2012).