hi..has anyone used 2 batteries in a tank, one to power the motors and turret maybe and the second battery to power aux things like a couple of fans and the smoke system..??
just wondered.. not much wiring knowledge have i, but would it be really complicated..?
rgds stuart

I've got two in a few tanks a few with 1 large pack. Go with the 1 large pack3300 MA plus unless you need the weight. The simpler the better!

Greg

If you do a search for Kabul Tanker or Swathdiver's Tiger I builds, you'll find some dual battery setups. They run them in parallel, making them essentially one big battery to run everything.

cheers guys..as i said, i'm not very electrically minded but its something i may do in a little while when i've a bit more experience..?
will check out those threads again...
rgds stuart

Check Here's my wiring diagram. Just make sure your battery charger can handle the MAH of the batteries as you'll want to charge them together. I discovered much to my dismay that my Dura Trax Piranha can only handle 5000mah. The MRC Super Brains can charge 2 separate batteries at once and 14000mah.

Here is a two battery system that is wired a little different, more of a switch board idea!

http://www.rcuniverse.com/forum/m_67..._1/key_/tm.htm

The Blitz

Which MRC super brain were you looking at? I was interested in the 989, which will handle almost 20000 mAh batteries, but it only does one battery at a time (5 amp/hr charge rate, if I remember correctly). I didn't notice any that do 14000mAh and two batteries.

The 977.

I saw that one but it had two things that I noticed, particularly if you're going to run dual 5000 mAh batteries. It seems like it's capacity is a little low for dual 5000s (8000 mAh spec'd). Also, if you're running two batteries wouldn't that be a 12-cell battery (977 spec'd to charge 1-8 cells)? Or, because you're running 2x 6-cell batteries in parallel it just looks like one big 6-cell battery to the charger?

Specs pulled from here: [link=http://www.modelrectifier.com/resources/batterychargers/charger%20features_03_07.pdf]MRC Super Brain Charger Features[/link]

I like the dual battery charge setup, though.