battery problem repost

[Dino69]

Ok one of my new tp 4000 mah 2s packs takes more of a charge then the other one, Today i did two short flights due to motor problems, i did a top off charge just to see where the packs are. With a Tp 6c charger and the balance boards i started the charge and after about 25 mins one pack was done with 150 mah put back in the other one went about 40 mins and took 600 mah what gives i balance when charging what could be going on. the other day the same battery took 2100 mah and the other took 800 mah why would one battery be pulling more mah then the other. I am using the spekrum inline regs with smart fly switches

[bodywerks]

If you have any kind of battery sharing device, either one built into a receiver(like a Powersafe receiver) or within a power expander, then you are pretty much just going to have to deal with it. It is normal with such battery sharing devices, and it happens whenever the input voltage of one battery is consistently higher than the other, even if it is only .05 volts. The system only draws off the higher voltage unless a load on the system causes the voltage to drop to a certain point, at which time it draws off the other battery.
With good regulators, you can adjust their output voltage - a feature not available with Spektrum receivers.
So you will just have to deal with it or get better regulators.

[Dino69]

thats funny when i was running a123 straight up both batteries would charge with in 50 mah of each other i just might go back the the a123 at a larger mah i was running 2300 x2 i might try 2x 4000 crazy thanks for the input