There are two rechargeable battery options for the °M Warmer: Power Pack or Power Pack+.
A charged Power Pack can warm 1.5 liters of cold blood or fluids, where the Power Pack+ warms 2 liters of cold blood or fluids on a single charge of the battery.
Power Pack+ has more than 1/3 increased blood and IV fluid warming capacity than the current Power Pack. This means that 2 litres of cold blood or fluid can be warmed up and infused to a patient on a single charge of the battery.