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Step 9The 12V battery
The battery that I use is 105Ah. With the use of Ohm's law you can calculate the time the battery should run on your system.
When using such a amount of power from a 12V battery make sure you use thick power cables, else your system simply doesn't get enough power to reach his maximum.
When using such a amount of power from a 12V battery make sure you use thick power cables, else your system simply doesn't get enough power to reach his maximum.
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Jun 19, 2008. 6:58 AMHandsome-Ryan
says:
How are you using Ohms law to calculate run time? There are so many factors affecting run time including amplifier gain settings, ambient temperature, the non-linear discharge rate of the battery, and even the volume and type of music being played.
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Sep 20, 2008. 12:49 PMalex-sharetskiy
says:
get an amp meter, play music for a muinute, check how many amps are drawn, then TRY to calculate
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