I’m currently using an HTC Sensation. I’m fairly happy with the stock battery that came with the phone, a 1520 mAh battery. I would get between 9 – 11 hours with average usage. That doesn’t sound like much, but I’m a heavy user. I’m almost always on WiFi and using apps. If I weren’t such a heavy user, I could probably get 15+ hours of usage.

Even though I was content with the stock battery, I decided to purchase an after market battery with a larger mAh rating. I ended up getting the Anker 1900 mAh battery with a battery charger similar to this one from Amazon. This is about 25% more juice than the stock battery. The 25% is pretty accurate. I am getting about 25% more usage time, about 12 – 15 hours on average, 2 to 3 more hours than the stock battery . The Anker 1900 mAh battery is working just as expected.

Having an extra battery is super convenient if you are traveling or always on the go and don’t have a couple of hours to stop and charge your phone. Whenever I travel, I always carry my extra battery and charger with me. When I run out of juice on one battery, I just pop it out and replace it with my fully charged one. Then I charge my depleted one over night when I can a couple hours alone with an outlet.

One thing to note is every time I switch batteries, the phone will take a longer time to boot up. My phone normally boots up in about 30 seconds. Every time I change out the battery, my phone can take as long as 3 minutes to boot up.

I can get a full charge using the external USB charger in about 2 hours.

The charger can be a little confusing to use. It doesn’t come with good directions. There aren’t any markings on the charging leads. Here’s a great video on how to use the charger posted by a person with the username SalvadorDali on Youtube.

If you’re in the market for an extra battery, check out the Anker 1900 mAh replacement battery.