I have ordered the 3d robotics hexacopter kit and I have no clue how to choose a battery for it!
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I have ordered the 3d robotics hexacopter kit and I have no clue how to choose a battery for it!
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As you have discovered, there are about 10,000 different LiPo batteries in the wild, and the list changes daily. Close your eyes and throw a dart.
This is what I did - it's probably not the most efficient. Some posters on the forums recommend 4S batteries, but this is what works for me on my 3DR Hex.
I bought a few of the $7.95 2200mAh, 3S, 20C batteries from Hobby King and made a parallel battery adapter. (I decided to standardize on XT60 connectors for my batteries. If you decide on a standard connector, change the wires on the battery pack one wire at a time to prevent accidentally shorting out the battery which would certainly damage it.)
Here's my parallel battery adapter:
http://diydrones.com/profiles/blogs/xt-60-parallel-battery-adapter
And here is the parts list from Hobby King:
4x #T2200.3S.20/8932 Turnigy 2200mAh 3S 20C Lipo Pack = $31.56
1x #HXTBM4S/4176 HXT Lipo Monitor 4S. A must have for all lipo users! = $2.40
2x #XT60/9572 Nylon XT60 Connectors Male/Female (5 pairs) GENUINE = $6.38
I haven't received this battery yet
1x #T5000.3S.25/14842 Turnigy 5000mAh 3S 25C Lipo Pack (USA Warehouse) = $28.99
On one 2200mAh battery, I get about 7 minutes of flight. On a pair in parallel, I get about 12 minutes.
Hope this helps.