Still getting hot very batteries!

[Aussie newbie]

Hi all,

I'm still getting very hot lipos after a flight. I have tried all the obvious things. Don't know what else it could be.

My setup is:

X400 with eCCPM conversion & alum head
ARK 2850kv motor
1800mAH 11.1v 15C battery

Belt tension is good and main gear mesh is not too tight.

Each time I charge my packs after a 7 minute flight I am putting back on average 1200 - 1300 mAH, which is well below 80% of the capacity.

What else could make the lipos so hot that they almost cannot be handled?
:arggg:

[WillJames]

Bad motor or ESC
Wrong gearing
Pinion slipping
belt binding or locked up auto hub

Is the pack soft after a flight when you squeeze it a little? Do you have a 1010/210V or know someone who can diagnose the individual cells in the pack after a flight for you. If you get them super hot consistently, the pack will probably not last very long.

[Pinecone]

Also wrong timing on the ESC for the motor.

[ozace]

My first thought is an underperforming battery pack.

on a mini heli i have found anything under 2100mah/16c is marginal.