mAh = Run time between recharges. The higher the MAH the longer the run time.
Please ensure you click here first to make sure your pack is not on the non rebuildable list
Our upgrades may be used with any of the chargers sold for use with the original battery
**Note: certain drill packs can only take the economy/micro cells. Most popular economy size packs are dewalt non XR/XRP and select Craftsman models. We will advise you upon receiving your order. **