Wasabi Power Battery for Canon NP-E3 and Canon EOS 1D, EOS 1D Mark II, EOS 1D Mark II N, EOS 1Ds, EOS 1Ds Mark II Ultra High 1650 mAh Lithium-Ion power rating. 12 V Can be charged with the original Canon charger. CE Safety Certification. UL Listed. Meets (or exceeds) OEM standards. 3 Year Warranty.