Much depends on how much current a device draws and how long you need the battery to last. Larger batteries will have higher capacities than smaller ones with the same chemical construction.
15v appliances
, No. I did it powering a 15V peavey audio mixer using a lead acid 12V battery. But depending of your audio mixer, you may have levels problems. Emmanuel
-7
The alternator is probably over-charging the battery. Replace the alternator if the voltage at the battery terminals is over 15V when the engine is running.
A: Disregarding the fact of different voltages there is the power to be concerned 9v x 1A = 9W, 15V X .8 = 12W. THE DEVICE WILL BE UNDER POWER.
A electrical voltage of Fifteen Volts.
it regulates +15v constant at output.
Yes you can. It will just take a little longer to complete the charge cycle.
11-15v from batt.
Almost certainly.
somehow
15(u + v - 2)