The battery is specifically designed for high rate UPS discharge applications, where high power output is required. All Belkin F6C127-BAT batteries meet or exceed OEM manufacturer specifications. This Belkin F6C127-BAT battery is professionally tested and packaged at as APC battery. Belkin F6C127-BAT battery is a proven solution, backed by our extensive UPS replacement battery experience. Better than but not APC brand labeled batteries. Fully compatible with APC units.