Lipo Selection?

[BoulderBob]

I would like to run 2 4s 25c - 40c 3600 - 5000 mAh in parallel on my stock UL-1 is this battery selection acceptable. The reason for higher capacity power is for future upgrades to the ESC and the possibly to the Motor; however, I don't want to damage the existing equipment.

[Doby]

That combination should be fine ,,,but (there's always a "but") one of the things you need to be careful of is that there is very little room for taller batteries. Be sure to check the battery height. Also, the space betweeen the motor and the side walls can be tight as well. Check you batteries measurements first.

Also, 10,000 Mah capacity can cause heat issues due to longer run times.