This battery lasts an amazingly long time for what it has to accomplish. I'm very happy and quite impressed!

warning!
Like all rechargeable batteries, this battery must be treated properly or it *will* die a premature death, even after just a few months.

Some people think that leaving rechargeables plugged in to a slow or "trickle" charge won't hurt them, and some chargers even say as much. This is true if we're talking about just a couple of days, but over long periods of time, like several months, it *will* shorten the overall lifespan of the battery, or even kill it completely. (No, this is not the Ni-Cad memory effect, but it's just as bad for the battery)

It is best to charge a battery to capacity, unplug it, then use it normally or just let it sit and self-drain over time. Once drained (to about 4%) plug it back in for a full charge and repeat.

I bought a DSC-P100 and in normal condition the battery is no longer than tree months.

Now I have to pay US$ 45.00 for a new one.