NKON sells them, they're currently out of stock though and I don't know when/if they'll be back, but you can contact them per e-mail.
They are working now. Thanks.
I need to be more patient next time.
Maybe a year ago I've read that there will be a new redesigned battery compartment. Any news?
We are a year closer than the last time you heard about it, which is exciting news! /s
I think last Hogo spoke of the new design it was still a ways out and that might be putting it mildly.
Actually, Henry has been doing this kind of thing from the beginning of HDS.
The only difference now is that I tell you about it.
Think about it... there are 22 versions of the software alone... there are at least that number of unknown (to the end user) upgrades and changes in the physical power supply and tail electronics.