Summary: Mis-representation of battery rating!

Comment: I purchased two of these, and I guess the old adage of "buyer beware" when faced with an unbelievable price is a lesson to learn again. The two BP-511's I ordered came promptly, but on first use in my video camera at an important marching band competition (for which we were representing the school as the official videographers) the battery dropped rapidly from full to half to quarter is 6 minutes, causing us to stop filming and losing precious minutes of the 10-minute performance.

Don't bother with these... they are certainly NOT 1800 mAh as advertised (and in fact, the batteries are almost half the weight of my original BP-512's, 1.5 oz vs. almost 3 oz, indicating a serious lack of battery material packed inside the normal size casing).

Summary: This battery will kill you digital camera

Comment: I got 2 battery for my EOS Rebel Canon Camera. The first day I use one it just Kill my CCD on my camera. I test the battery volt's and find out that this battery give you a little more that this camera will need, killing you CCD system. My camera is know for repair.

Summary: Great bargain of a battery

Comment: I've run these through a couple of cycles now and they appear to hold up as well as the OEM battery did (in other words, quite well). It was painful to pay as much for the shipping as for the battery, but when taken as a whole, it was still a fantastic bargain.

Summary: So Far So Good

Comment: Bought 2 of these and only had them for a short while but so far so good. They are holding charge very well and performing better than my OEM battery (although this is now quite old so not a great comparison)

Summary: Decent Cheap Batteries

Comment: I had initially purchased two of these because Canons and BestBuys price was way too high for replacement batteries. One wouldn't work at all in a Canon 30d, but they were so cheap I tossed it and bought another one which is working fine.

Very good value for the price.