
Me use this with f970 batteries and it improves the battery life of my BMPCC4K. However, the LED indicator is not accurate, it randomly changes color from red to green. At least it stays green when the battery is actually fully charged, if it's solid red it means the battery isn't charged, maybe 90% or maybe 5%, better than nothing. I really hope it's a "dead battery". Display telling me that my battery will be empty after a few minutes. But the f970's battery life is long enough that I don't have to change it very often, I just have to remember to change it maybe every 1.5 hours.

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