7.2V, 3000mAh, Ni-MH Battery fits Ohaus, Defender 5000, Defender 5000 Bench Scale, 21.6WhBattery Fits Models: Defender 5000, Defender 5000 Bench Scale, Defender 7000, T51, T51p, T51xw, T71 Battery Part Numbers: 80500729, Gp300sch6s6z Canadian Batteries have supplied the replacement batteries from Cameron Sino for nearly a decade. We have had zero instances of a product being damaged while using one of our batteries in that time. Cameron Sino is one of the world's most successful third party battery manufacturers; check out our products