MILWAUKEE HIGH OUTPUT LI-ION BATTERY 18V

Overload protection – Prevents the user from damaging the cordless power tool investment in abusive situations.
Temperature management system – Keeps the battery in the ideal temperature range for maximum life.
Individual Cell Monitoring – Ensures optimal charging and discharging for maximum service life. Up to 2 times longer operating time, 20% more power and up to 2 times more recharges.