bit-tech Shopping: Canon BP-511A Digital Camera Battery

Rating: 10

Time with product: 5 Years

Strengths: Good batteries for cheap prices. BP511a for my Canon 40D. $23.99 for a two pack. 20MAH. I go a good long time between battery changes.

Weaknesses: None

Summary: I have never had a problem with these batteries buying from www.sterlingtek.com They are on the Price grabber list. My 40D just sips the power. I also get my rechargable batteries there. A packake of 4 2700MAH NIMH for $9.99. Replacement chargers are there also. I have recommended them to many and all have been satisfied.

Rating: 10

Time with product: 1 Years

Strengths: Lasts longer than Canon's originals. Awesome price by Sterlingtek.

Weaknesses: None.

Summary: I purchased three of these from Sterlingtek and none of them have dissappointed me. I use these for both my external batter grip or just in my EOS 5D. Strongly recommended. They charge up fast with the Canon charger and last longer than my original Canon batteries (I have two of them).

Rating: 8

Time with product: 2

Strengths: Very, VERY long life on a single charge. Impressive.

Weaknesses: n/a

Summary: Exactly what I was hoping for. This battery lasts a really long time. Even when using a lot of flashes. Two of these batteries should last the average user who shoots every day a good four to five days. Definitely recommended.

Rating: 2

Time with product: 2 Weeks

Strengths: None

Weaknesses: Battery pack drains after 20 shots.

Summary: After fully charging the battery pack (Twice), it only allow me to take about 20 pictures with my Canon 20D before it completely drains.The original battery pack that came with canon 20D takes over 400 pictures before it needs recharging. I have requested a RMA to get an exchange or refund.

Rating: 8

Time with product: 60 Days

Strengths: - 100% Compatibility- Made in Japan

Weaknesses: - Expensive

Summary: Bought this battery from Amazon.com. Capacity 1390mAh. Much more expensive than the generic/aftermarket batteries (higher mAh too), but guaranteed compatibility and will not void manufacturer warranty by using aftermarket batteries.