It looks to me as though you have the charger - what you don't have is a power supply (e.g., 12V battery) to connect the charger to. Those alligator clips at the top of your photo must plug into the blue balancing charger box, right? And then your flight battery (the black one in your photo) plugs into the other side of that box. But to charge it, you need to connect the alligator clips to a power source. I've been using an 12V 8 Amp-Hour sealed lead-acid battery from an old computer uninterruptible power supply, and it works just fine. I bought it for maybe $15 or so at American Science and Surplus, and got a pretty inexpensive charger for it from Tower Hobbies. I use it for several things besides recharging my flight batteries.

The balancing charger you have must have some indication of the acceptable input voltage. I imagine that what you need is a 12V battery as well. Tower Hobbies sells one for $20:

http://www3.towerhobbies.com/cgi-bin...XL370&P=ML

and a compatible charger for $11:

http://www3.towerhobbies.com/cgi-bin...LXL353&P=M

That's the same charger I have, in fact.


If you already have a 12V power supply capable of recharging your battery, then you just need to attach to it through the alligator clips. Otherwise it looks like you've got about $31 of battery/charger to buy. The good news is that battery/charger will be a nice portable source for all of your charging needs - you'll be able to field recharge the flight batteries for any of your planes with it.