Nicd 4Cell 2400Mah Battery

[Piter^Pen]

Hi,

I have Sanyo NiCD 4Cell 2400Mah Battery

on my heli i have 1 x S3151 + 3 x 9252 + 1 x 9254 + RevMax + Gyro 401 + Futaba 8 Channel Pcm Reciever

I am using a robbe ultimate 2 charger

after 3 flight the charger inputs 900mah to the battery

how much mili amper can i use before i need to charge battery?

if there is a formula i would like to here about it

[simmer]

I think if you can do a few flights (off a new charge each time) you can get an average usage per flight. Then take that and multiply by say 3 or 4 flights to see how much your using total. Just make sure the total minus - the initial amount of milli amps winds you up at or above the safe point. I do not yet fly 6 volts, but a 4.8 volt pack I generally quit when I get close to 4.5 volts. It starts out at 5.8 on a fresh charge. I swirl the sticks and check the voltage before each flight ( (I4C device) My estimate on my raptor was about 300mA per flight so three flights is 900 mA used. I could go longer maybe 4 flights at 13 min a flight.

I use this I4C device to know when to stop. If the led is on solid, land and recharge. Too simple :) I use the CV 100AC http://www.i4cproducts.com/r_c_applications.htm

Green BRIGHT led flashes to let you know your good. When its on solid, you land and recharge. Easy to see even in bright daylight

[simmer]

"Battery life will improve when you exercise your battery. To exercise a rechargeable battery, first discharge the battery to 1 volt per cell (or until your equipment complains of "low battery"). (NiCd and NiMH batteries consist of 1.2 volts per cell - i.e. a 4.8 volt battery contains 4 cells). Finally, charge your battery with a trickle charge until fully charged. When fully charged a NiCd battery will show approximately 1.35 volts per cell, and a NiMH battery will show about 1.39 volts per cell. "

so yeah I am starting at 5.4 volts and when its down to just above 4.4 I stop flying. I play it way safe :)