Opteka LP E5 1800mAh Ultra High Capacity Li ion Battery Pack for Canon Digital Rebel XS XSi and T1i Digital SLR Camera

The Opteka LP-E5 rechargeable lithium-ion 1800mAh battery is a replacement for replacement for Opteka LP-E5. It features lithium technology, which ensures maximum battery life and maximum power. It also features no memory effect that lets you recharge partially drained batteries without reducing performance.
User Ratings and Reviews
5 Stars great spare
Bought as a spare for a recent trip. Worked wonderfully. Never got either main or spare down to the “low battery” warning. Took plenty of movies and flash pictures, both this and the OEM battery seemed about equal. Very unscientific test, but if you are planning a trip, this will compliment your OEM battery wonderfully.
2 Stars Last Short Time Than Original Canon Battery At First Charge
It last shorter than the original Canon Battery at First charge, don’t know after yet.
4 Stars For the price, this battery is a steal!
Dollar for dollar, this battery is just as good as any, if not better! It won’t outperform a Canon battery, but it works well and will definitely get the job done. Save money and buy this battery instead of buying Canon batteries.
5 Stars Great Battery Life!
After reading some of the reviews, I was a bit concerned about how these batteries may stack up next to the canon battery that came with my rebel T1i. I ultimately purchased two of them, because I was expecting them to die relatively quickly and need to be changed more often than the canon battery. It has actually been the exact opposite so far. My canon battery lasts noticeably LESS long than either of the Opteka batteries. Maybe I received two particularly good copies, but for the price I have been more than pleased with these batteries.
5 Stars Great company for batteries and grips
I am very pleased with all products from Opteka. I use the battery grip on my Canon T1i and have had no problems with the batteries. I have shot 300 pictures plus without even loosing one bar. I would recommend both the batteries and the grip to any one.