Could it be a bad cell??

[furycham]

Hi guys,

Have a problem with my duralite, here is my setup.

Duralite 4000mah
5.1V regulator unswitched
3 Airtronics 94758
GY502 /9254
TJ pro/ 9253

My battery is completely charge and when I move the sticks the GYRO screen shows me a voltage between 5.0 and 4.8, if I left the sticks it´ll go to 5.0Volts. I have tried a new Regulator but is doing the same.

Should I stop flying??

Thanks again.

Vic

PS. I haven´t let the battery discharged under 6.9Volts

[DavidH]

PS. I haven´t let the battery discharged under 6.9Volts

You said you tried a different regulator with same results. Have you tried a different battery also?

Also I have seen the voltge flicker on my 601 screen before a couple of tenths. But when I have done the same thing with a Fluke meter plugged into the circuit , the voltage reading is steady.

I just check my battery before each flight with a 1 AMP load. As long as it is above 6.9 volts I go fly. I have used the batteries down to 6.5 volts with 1 amp load.
No harm is done to the battery as long as they stay above 5.5 volts with no load when checking.

David

[furycham]

Thanks David,

Actually the battery seems to be steady under 1 amp load, so I won´t worry about it.

Going to check with another battery just in case something is wrong with the one I have on the heli.


Thanks again

Vic :D

[DavidH]

Vic,
If there is bad cell in the pack. It will never fully charge to 8.2-8.4 volts. I have had one pack that a cell went bad. The light on the charger would never go out. Then when checking the battery with a voltmeter with no load, it would only show like 7.6 volts. With a 1 amp load it would show about 7.2. I could still use the battery and get 4-5 flights out it before it would need recharging. I did this while I waited for the new battery to arrive from Duralite to replace it. That is the great thing about the redundant wiring in the packs.

David