2,850 mAh (to 0.8 volts)(Rated capacity at 25 mA continuous drain)
For my circuit, I have added 4 similar rating aa batteries in series. My question is, what is the maximum current that can be drawn from this setup?
My geared motors work at 32 mA and their stall current is around 500 mA @ 6v. If I limit the current to 32 mA, and if the load in the motor increases, will it slow the motor down?
Also, What is the max current drawn, if I add battries with 2100 mAh and 1600 mAh together.
Lets say 25mA for 100 hours. So Can I utilize 2500mA for 1 hour!!?? (Maybe not practically, but theoretically is this rite!!??)
Adding 4 batteries and making it 6v should work for 2500mA for 4 hours. So basically it depends on the load.. rite??
Quote from: FelixFelicis on Mar 07, 2012, 02:42 am Adding 4 batteries and making it 6v should work for 2500mA for 4 hours. So basically it depends on the load.. rite??Not quite ... You are using the term battery to mean 2 different things. A single "battery" is properly a CELL. Several cells in series of parallel is a BATTERY. Comes from the idea of artilery. 1 gun is just a gun, a group of guns is a battery.Cells in series add their voltages so 4 cells in series for 6V is still only 2500mA for 1 hour. 4 cells in parallel would add their current capacity and provide you with 1.5V at 2500mA for 4 hours.
Lets say 25mA for 100 hours. So Can I utilize 2500mA for 1 hour!!?? (Maybe not practically, but theoretically is this rite!!??) Unfortunately no, not in the real world. You may only get half the total mah capacity when discharging at the 2.5 amp rate Vs the 25ma rate, maybe even less! The battery manufactures often give a graph of total mah capacity Vs current rate discharge in their datasheet. Otherwise you can only determine that by testing and measurement. Also a charger has to put back more then rated mah back for rechargeable batteries as the chemical process is not 100% efficient.
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