12V AGM is being charged by the DC to DC converter found in all RAV4 primes...plugging an aftermarket inverter into the 12V lighter port wouldn't be your best bet since this would be fused at a much lower amperage and just isn't engineered to draw much current from...aftermarket pure sinewave inverters are fairly cheap to buy I spent @$300 for my 2500W inverter via amazon but has to be connected directly to the 12V battery for proper use