Hitachi Bundle - 3 Items: 2 Hitachi EBM315 3.6v Li-Ion Batteries & 1 Hitachi UC3SFL EBM3-Series Battery Charger One UC3SFL Lithium-Ion 3.6 Volt EBM3 Series Battery Charger and Two EBM315 HXP Batteries Overcharge and over discharge protection to increase the life of the battery Authorized Hitachi Retailers supply the Hitachi warranty