How Many Ma Does A 9v Battery Put Out. 4 triple A 4 double A 1 9V. Answer 1 of 7.
9V battery Amp-Hours at 100 mA Discharge rate. Lighting LEDs in parallel requires a resistor for each LED but the amps add up. There is a simple equation to work out how long your battery will last its not exact as its averaged down from the strict parameters.
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The internal series resistance of a good 9V alkaline battery is about 10 ohms so at best you could get 09A out of one. In some cases they do not know the answer so they beat you. C-rate is used to describe how fast a battery charges and discharges. For example a 1C battery needs one hour at 100 A to load 100 Ah.

