Promaster BP-511A Canon 專用鋰離子電池

Charges up just as fast as the original and holds its charge for weeks between uses, which is exactly what I need for backup. The build quality feels solid and the fit in my camera is snug with no wobble.

Two full shoots in and the charge indicator still shows plenty left, which is more than I can say for the old original. It's held up through hundreds of shots without a hiccup, so the "long lasting" claim actually checks out.

I was worried about third-party batteries, but this one has held up perfectly through two full days of shooting. The charge indicator on my camera reads just as accurately as with the original, and the capacity easily matches it.