theres a handy list of batterys that fit at the traxxas forums
http://traxxas.com/forums/showthread...ar#post4803271
the summary of it is below
2S
SMC 8000mAh/28C/2S/7.4V Soft Case Lipo
SMC 9000mAh/28C/2S/7.4V, Soft Case Lipo
3S
3s zippy 30c 5000mah
3s turnigy nanotech 5000mah 45-90c
ZIPPY Flightmax 5000mAh 3S1P 30C Hardcase pack
3s zippy 30c 5000mah
3s turnigy nanotech 5000mah 45-90c
2S Turnigy 5200mAh 5.2 Hard Case.
2S Turnigy 5000mAh 5.0 Hard Case.
Hyperion 3s 5000mah 45C Soft
Hyperion 2s 5000mah 45C Soft
Turnigy 3s 5000mah 30C Soft
Turnigy 4s 4000mah 40C Soft
SMC 2s 6000mah 28c
Thunder Power 5300mah 35c
Team Orion Carbon 3S 4700Mah 45C
Turnigy 30c 5000mah 3s soft
Turnigy 30c 5000mah 2s soft
2s Turnigy Nanotech 6000mah 45-90c
FlightMaxx 30c 3s 5800mah. Just fit.
For a 5S set up
Turnigy 5000mah 40c 2S
Turnigy 5000mah 40c 3S
The turnigy's that I just bought were slightly too wide and I couldn't close the door. I just bought 6 small nuts, pulled the doors off and reinstalled. It bumped the doors out enough to be able to close the doors.
2S
2s Hyperion 5000mah 45C Soft
--Direct Fit
2s SMC 6000mah 28c
2s SMC 8000mAh/28C/7.4V Soft Case Lipo
2s SMC 9000mAh/28C/7.4V, Soft Case Lipo
2s Turnigy 30c 5000mah soft
--Minor Mod/Extend Batt Door Out
2S Turnigy 5200mAh 5.2 Hard Case
--Minor Mod/Trim Batt Door For Wires
2S Turnigy 5000mAh 5.0 Hard Case
--Minor Mod/Trim Batt Door For Wires
2s Turnigy Nanotech 6000mah 25-50c
--Direct Fit. Need a few layers of duct tape on the top of the pack for a snug fit.
2S Sky Lipo 5000 mah 40C
--fit snugly
2s Nosram Fat Cobra hardcase
–direct fit
2s team orion carbon 7000 35c
--direct fit
2s Zippy FlightMax 5000mah/30c/hardcase
--Minor mod: remove both “L” brackets, take “L” bracket that was at the back of compartment, move screw to closest hole to corner of bracket and attach to where front “L” bracket was located. Distance should be PERFECT, nice and snug!
RC DUDE Power 5000mah/35c RCDude.com
--direct fit
HiCountryHobbies/Billowy Power 5200mah/50c HiCountryHobbies.com
--direct fit
3S
3s Hyperion 5000mah 45C Soft
--Direct Fit
3s Max Amps -6000xls
3s Team Orion Carbon 4700Mah 45C
3s Turnigy 30c 5000mah soft
--Minor Mod/Extend Battery Door Out
3s FlightMaxx 30c 5800mah
--minor mods required, enlarge hole on battery door
3s Turnigy Nanotech 6.0 6000mah 25-50c
--remove retainers & back out or trim screws if they extend into battery compartment.
3s zippy 30c 5000mah
3s SPC 5200 40C
--“tight fit, a little “work” needed” – 87GN
3s Kypom K6 6000mah
-- fits perfectly
3S SPC 5200 mAh 40 C
-- remove retainers & back out or trim screws if they extend into battery compartment.
RC DUDE Power 3s 5000mah/35c RCDude.com
--direct fit.. very snug 29mm tall
HiCountryHobbies/Billowy Power 5200mah/50c HiCountryHobbies.com
--direct fit.. snug 28mm tall
4S
4s Turnigy 4000mah 30C
--Minor Mod/Extend Battery Door Out (Same size as the Turnigy 3s 5000mah 30c soft)
Just received 2x 2s Zippy 4000mah 30c hardcase lipos and they fit. Its a little tight on the rear part of the battery door but the doors close.
3s zippy 30c 5000mah - Direct Fit
Sky Lipo 2S 5000 mah 40C fit snugly
Kypom K6 6000mah 3s fits perfectly.
erevo 1/10,14.4v dewalt , evx-2 with extra caps, Quad 1S lipo, ubuntu user, Youtube Channel - Thestinger30 ,Hyperion EOS0606i x2, Savox SB-2270SG, Hobbyking 150amp esc, 36x74 1900Kv brushless inrunner