Fully charged, it kept my BMOC4k running passively for just over 5 hours. That augers well for actual recording time, when comparing with the 35-40 min. of the provided internal battery, which keeps the camera passively powered for just over 60 min. I doubt the more expensive BM recommended external grip is as good bang for buck. The only remaining unknown is the working life of both units.
Verified purchase: Yes | Condition: New
The OEM Cannon batteries are rated at 760 mAh (mill-amp-hours). This number indicates how long the battery can run under load. This Insten battery is rated at 1400 mAh which implies it has double the capacity of the OEM batery. Not EVEN close. Two new Insten batteries fully charged before use both provided less than 15 pictures. My 10 year old Cannon battery does 30+ photos. Based on this real world test these Insten batteries are at best 350mAh. At $4 each it's about on par relative to mAh per $ comparable to other batteries. The question is do you want to constantly charge a battery, particularly is you are not near and A/C outlet? This is definately the NOT the battery you want if you are on a whale watching cruise hoping to catch the sight of a lifetime.
Verified purchase: Yes | Condition: New
My camera has been dead for awhile. My Nikon battery should be rechargeable however it doesn't charge. Took a chance on this product and finally got something that makes my camera work again. So far so good. Will update later on battery life. I have taken it to a fair and shot videos and pictures and it's still working lol. Can't beat it for the price.
Verified purchase: Yes | Condition: New
The battery is delivered in a well presented package with the product identification. In it's interior you'll find the battery protected with a plastic bag. Very easy to install, you remove the old battery and insert the new one. I always keep the battery in charge for 24 hours before using it. The Li-Ion batteries last a very long time, no matter how hard you use your camera. The previous battery give us more than six years of use and never lost the charge. I will recommend this product because it is priced right and delivered fast.
Verified purchase: Yes | Condition: New
the battery is only longer by few minutes compare to oem one. the battery fits easy going in but going out is not popping out maybe due to extra weight. the run time is only few minutes longter than oem.
Verified purchase: Yes | Condition: New
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