Very convenient as I can take it camping and recharge my camera batteries from a $15 li-ion USB portable battery or from my car. Bad part is after taking about 100 photos on my camera, my camera came up with an error asking if the battery was a Canon encoded battery. That error comes up every several photos and I keep saying yes to the question. But I am wondering if I can keep using these new batteries. I have the exact same batteries that are 3 years old and they never gave me any trouble and work as good as the battery that came with the camera. I am not sure what causes this problem. Perhaps it is due to the increase battery capacity compared to the Canon battery. I deducted one star because of the error message but still gave it 4 stars because the 2 other identical batteries I bought 3 years ago still work like new and the charger is very small and portable compared to the Canon charger that came with the camera.
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