0Orngrimm 14 days ago ReplyUpvoteLets do a quick math:20 Amps120V AC2 hours120V AC @ 20 Amps = 2400 Watt2400 Watt over 2h = 4800WhLead-Acid batteries have 35-40 Wh/kg. This means around 128kg of batteries if we assume 100% efficient conversion DC//DC and from DC to AC (Which is for sure not the case).For Lead-Acid batteries i would say, we are in the ballpark of 140-150kg Batteries per 2hFor LiIon:100–265Wh/kg. Lets assume 180Wh/kg for reasonable prices...This means around 27kg of LiIon batteries. (Be sure to mechanically protect those batteries! I can immagine the horrorscenario if you crash and rupture those packs! Definitely NOT NICE!)I would say, ballpark-number there 30-33kg of LiPo batteries...Both technologies are easy capable of 20 Amps continuous.DC/DC-Conversion and DC/AC-Conversion is another topic entirely... A Battery discharges and lowers voltage. If you want constant Power, be sure to have the necessary voltage at the end of discharge... Buck-Converter for 20Amp are MUCH simpler than Boost or Buck-Boost for 20Amps.Before we go further, are you sure you want to have 140kg of lead or 30kg LiPo on board??