These batteries work maintain charge just as well as the stock batteries

To keep it short and sweet, the batteries work great, I recommend draining them completely before fully charging them, the charging dock is awesome and smatree has excellent customer service if you have an issue with something

These batteries work ok at room temperature, but in Death Valley at 120F they failed in less than 5 minutes.

And I honestly haven't been able to get a real tell on how well the batteries work because I used it skiing going an avg

I have the hero 4 black and these batteries work perfect and just as well as the one that came with the camera

The battery works perfect

I haven't tested battery life but both batteries work and hold a charge..these batteries are slightly bigger then the hero 4 battery but it still works fine

I haven't tested battery life but both batteries work and hold a charge..these batteries are slightly bigger then the hero 4 battery but it still works fine

The batteries work fine, however, when charging 3 batteries at once the charger can get a little temperamental

one of the GOPro batteries fried when charging it but the Smartree batteries work fine and actully last longer than the GOPro batteries

When the batteries worked, they worked well

When the batteries worked, they worked well

The batteries worked on the charge that came with them when I put them in the charger the light indicated that they were charged but they wouldn't work in the Gopro 4 silver

These batteries work ok at room temperature, but in Death Valley at 120F they failed in less than 5 minutes.

batteries work but the base does not charge them.

I read a prior review saying only one of the batteries worked

I give this product a solid A++.

Just as good as the originals

great (Y)