Power specs for the TB3
Input Voltage: 10.0-13.5 volts.
Current for the TB3 at rest (motors not energized): 0.10A to 0.32A based on back light setting
TB3 with Pan/Tilt motors powered: 0.66A
TB3 with Pan/Tilt/Aux motors powered: 1.15A
Connector: 2.1mm x 5.5mm x 12mm circular barrel connector – center positive.
Powering it from the wall – use the supplied adapter only. Just because it fits doesn’t mean it will work ok! If you power it with a recycled supply from your old wifi router that says 12 volts/ 450mA – you aren’t feeding the rig enough current and the motion will suffer. If you plug it the the charger for a another manufacturer’s battery – it will likely harm the TB3.
Let’s talk capacity. Batteries are rated with something called Amp-Hours (Ah) or milliamp hours (mAh). A 12 volt 1Amp hour battery theoretically will be able to provide 1 Amp at 12 volts for 1 hour. It would theoretically be able to provide 0.1Amps at 12Volts for 10 hours. The math is simple – Capacity/Current=Time.
For the money and the warranty, I think the best portable pack out there right now for the price is the Ankor 14400mAh. The pack doesn’t have the full 14400 mAH capacity at 12 volts. This capacity is measure at 3.7 volts. so plan for about 4400 mAh at 12 volts. The pack has a hard shell and is well built. For 1.2 lb pack, this will give your 4-6 hour of shooting. We have pushed it much longer when setting the TB3 to use power save mode for timelapse.
So for the larger 7.5 Amp Hour 12 Volt SLA battery that I ship you should theoretically be able to get 7.5/.7= 10.7 hours. In reality, this is rarely the case. On the website I say you should expect between 6 and 8 hours of shooting. You can probably get more out of it as long as you are monitoring the battery. With SLA batteries you should not cycle the battery below 11.9 volts. If you drive it until its dead, you are hurting the battery and it will lose capacity quickly.
Other battery solutions can be found here in the store. http://store.emotimo.com/categories.aspx?Keyword=battery