There are several differences between lithium batteries and AGM. See below for a brief explanation: Benefits of lithium batteries: Lithium batteries offer up to 8x more charge/discharge cycles than AGM & GEL batteries Lithium batteries are 1/2 the weight of AGM & GEL batteries You will need 3 AGM / GEL batteries to every 1 [...]

To size a battery bank we take the hours needed continuously x watts = total watts/DC volts=amps needed. Example: 3 hours of run time needed * 1500 watts = 4500 watts total / 12 volts DC = 375 amps. You will need a total of 375 amps of stored power in the batteries. We don't [...]