Now for how to keep these batteries charged during play. We can reuse some of our previous math and skip right to our requirements of 6250WRMS after amplifier efficiency. We are going to find what amperage our alternator system needs to produce by dividing our wattage by 14 volts. This looks like 6250WRMS/14volts=446.42 amps. Being that our charging system still needs to adequately support our OEM vehicle electronics we are going to add 30% to this. However if adding an alternator system NOT being tied into the OEM systems and ran solely to our aftermarket gear we would skip this step. This looks like 446.42 amps x 1.3 = 580 amps of required alternator charging. This could be broken up across 2,3 or however many alternators. (Note that not all engines can support the high demand and load of larger alternators and may require you to increase your idle by various methods so not to have engine stalling when the alternator(s) kick on).
With the increasing popularity, huge costs, and weight savings of lithium technology we must address these separately. Lithium is not AGM and are rated differently. We have found a safe rule of thumb for lithium is roughly 200WRMS for every 1aH of lithium being used. So using our same math above this would look like 6250WRMS/200WRMS=31.25aH of required lithium battery. I'll also take this time to point out how much weight, space and costs this saves over traditional AGM.
For the manufacturers we have come to trust we recommend Limitless Lithium, Northstar Batteries and Singer Alternators for the best in product quality, customer support and warranties. For more information visit the following links or click our store above to purchase!