B25 Mitchell EP

You have an iCharger, don't you? Check the internal resistance of the cells in each pack to see if there's a big difference.

I have checked the rpms and they are virtually similar. When I was originally monitoring the power I was only checking current/ wattage, so even though the amps being drawn, varied between motors in fact the efficiency of the ESCs and Motors gave similar actual rpms.

Checked both pack's cell's voltages and statuses. Pack 1 is down on cell volts. Put it on the i-Charger and cycled it from 3.7v to 4.2 a couple of times. Cells now come up to 4.19/4.2v. now shows 99% charge. 20.9 volts. That seems to have livened it up.

Made up a parallel lead anyway. Tried it on the parallel patch lead with no obvious difference. So, only way to find out what is what is to fly it.... :lol:

Far to technical for me,I'm sticking wth diesel

PhilF51 wrote: Checked both pack's cell's voltages and statuses. Pack 1 is down on cell volts. Put it on the i-Charger and cycled it from 3.7v to 4.2 a couple of times. Cells now come up to 4.19/4.2v. now shows 99% charge. 20.9 volts.

It's a lot easier to check the health of a battery by measuring the internal resistance.

Phil - On my electric. twin Otter I have contra rotating props, revs were very close at 7,700 & 7,800 but running off a
single battery. Tracks really straight with contra rotation.
Colin.A