Guys who's using this battery, what DC jack I need to get for external power?
Thank you!

We have 3 of them.

Great battery as a stand-alone, as long as you don't mind not having the "time left" guesstimate indicator - I don't.

However, when running them with a Ninja Blade, they ran out of puff very quickly and unpredictably. The NB was more sensitive to the dropping voltage than the C100, so it powered off first at around an hour.

So be careful how much additional load you put on them.

Test Test Test!

Ben.

yeah, test is good;
OK i answer myself it's 2.1mm ID and 5,5mm OD, let's see for how long S8845 is good with F&V K320,
non stop :)

let's see for how long S8845 is good with F&V K320,
non stop :)
3 hrs, but what's nice - is the light volume is the same until the battery is dead,
It doesn't get dimmed during battery depletion,
Nice