4500mah Battery How Many Hours. The 4500 Mah rating means that the battery is capable of delivering 4500 Milliamps or 45 Amps for one hour. Then select the battery typesize in the left column NiMH NiCd AAA AA C D 9V 9 volt and in the right side select a current output electric power output of your.

Any new smartphone with a minimum of 3000 mAh is perfectly fine for casual users. So in such situations your phones battery should last 89 hours. A 4000 mAh battery on a full charge will last for 4000 hours when the circuit it powers draws 1 mA current.
This battery life calculator estimates how long a battery will last based on nominal battery capacity and the average current that a load is drawing from it.
So i realized the larger back housing could have a 4500mAh battery. You can calculate the battery life by dividing the capacity of the battery by the current required by the object. Type into the calculator your rechargeable batterys capacity number normally can be red on the battery body eg. The formula is mAh Amps1000 hours.

