Sony NP-BG1 Rechargeable Battery

Charged and discharged it a dozen times over two weeks and the capacity hasn't budged, which is exactly what I needed given my old battery would drain before lunch. The lack of memory effect is a real relief—I can top it off whenever without worrying about shortening its lifespan.

I needed a reliable backup for my camera and this battery holds a full charge just as well as my original. The lack of memory effect is a huge plus for someone like me who charges randomly.

I was a little worried that leaving my camera off for a few weeks would drain the battery, but it held its charge perfectly. The lack of memory effect is a real plus for someone like me who tops off randomly.