Advantage: Uses the highest quality Ni-MH cells,excellent performance. Overcharge and overdischarge protection to increase the life of the battery. No memory effect, can be charged or discharged as needed without loss of capacity. Low self-discharge for maximum productivity and less downtime. CE, FCC and RoHS certified, 100% compatible with the originals. No pollution to the environment. Specifications: Voltage: 12V Capacity: 3500mAh Battery Type: Ni-MH Replace for: Festool 497019, 498336, 498338, 564247, 398338, C12, C12LI, T12 + 3 Fit for: Festool BPS12C BPS12S BPC12.