Battery BacPac™

US$ 49.99
Model Number: ABPAK-001

The Battery BacPac works as both a charger for your spare HD HERO batteries and plugs
into the back of the 1080p HD HERO camera to nearly double record times. Perfect for long
duration time-lapse photo sessions, endurance motorsports racing or any application where
you need up to 2X* the battery life.

Fits Current HD HERO & HD HERO Wrist Housing when used with included backdoors.

Battery BacPac Features:

-- Attaches to the back of the 1080p HD HERO camera, allowing for up to 2X* extended record times
-- Plugs into any USB charging source to charge your spare HD HERO batteries.
-- Charges 960p and 1080p -- HD HERO camera batteries
-- Built in LED lights indicate battery power status

What’s Included:
1 Battery BacPac
1 Li-Ion Battery
1 Waterproof Door for HD HERO Housing
1 Skeleton Door for HD HERO Housing
1 USB Cable

Warranty: One Year

NOTE: may require firmware upgrade. The Battery BacPac is NOT compatible with the HD HERO 960.

More info, pics at http://gopro.com/hd-hero-accessories/battery-bacpac/

What would have been reallycool is if they put the same adapter port on the battery pack, so you could stack the extra battery AND the LCD back at the same time.

You just answered my question :(

LCD Bacpac + Battery BacPac = non-starter.

That's a real shame.

What would have been reallycool is if they put the same adapter port on the battery pack, so you could stack the extra battery AND the LCD back at the same time.

The mounting systems barely handle the mass of the camera let alone 2 more accessories.
I guess it depends on the user application.

Some little known info on the Battery BacPac

01. Does the Bat-Pac USB plug charges both GoPro battery or only the one on the Bat-Pac when Bat-Pac is plugged into a GoPro ?
USB Port on BacPac will only charge BacPac Battery, not the camera itself, and the camera's USB port will only charge the Camera's Battery.


02. Are the two batteries technically being paralled or the unit can choose to use the camera battery first and the Bac-Pac battery after that or how ?
They are run one at a time, not in parallel. The camera discharges the BacPac first, then when this is depleted it uses the camera battery.

03. Is it a must that both batteries must be fully charged before installing one in camera and one in Bat-Pac ?
The batteries can be at any charge state as long as they are not both drained, and you should be fine.