Huybrechts Tyas 2 Nikonのもともとのバッテリーの持続時間の半分にも満たないです。使用中はバッテリーの減りが圧倒的に早い。応急処置用で買ったので、質はそこまで求めていなかったけど、流石に減りは早すぎる。3rd Partyバッテリーはこんなもんかな。3rd Party batteryThe battery doesn't last half as long as the original Nikon battery. I wasn't expecting much of a third party battery, and bought it in case of emergency, but it looses power during use really quickly.