Third party ACK-E6 power source - Canon 7D2

[Codebreaker]

I've asked this question on Dpreview but would also value comments from here.

I need and external power source for my Canon 7D2. The Canon part is just too expensive for me and there seem to be a number of third party options at a fraction of the cost. Protastic is just one option -

https://www.protastic.co.uk/power-ca...606721761.html

Would anyone care to share their experience of these?

Thanks

[loosecanon]

Mine work ok, not sure what final voltage at camera is, transformer gives 8v. Found the adapter for E17 would not work in M5 due to lead position on exit from camera.

[Codebreaker]

Thanks for the reply. I think I'll chance it but as I do with new batteries I'll put a meter on the output first.