Tacoma bed outlet for charging boat batteries

I have a boat onboard charger that says "Input current 5.2 amps at 120 VAC 60hz" and "Input power at 500 watts at 120 VAC 60hz". I know the Tacoma bed inverter is 400 watts at 110amps. Would I still be able to use the boat charger while driving? I'm not an electrical person, if the wattage is exceed will it shut off completely or only provide the wattage necessary?

 

It'll trip an internal breaker and will shut off the plug completely.

 

It should be 400 watts at idle, 100 watts when driving.

 

Are the boat batteries 12v? Then why not get a 12v to 12v battery charger? Lots of wasted energy converting from 12v DC to 120v AC then back to 12v DC

 

Because my boat already has a 120 volt battery charger. Makes it easy at home, you just plug it into the wall.

 

If your truck has a 7 pin rv plug, you have a hot 12(actually 14) volt feed for charging batteries. It would do a better job than the bed plug inverter.

 

You might have better luck with a low-amperage trickle charger. I'm not an electrical genius, but watts = amps x voltage... so I think 3 amps @ 110/120 volts is going to be your cap while parked. Driving drops you down from 400 to 100 watts (I think). Even 1 amp @ 120v is going to exceed the capacities.

I think someone mentioned before, but it's probably a lot easier and more efficient to charge directly from the 12v source.

 

Your home outlet has roughly 5x the output of the outlet in the bed of our trucks. Your first post says 5.2 amps input needed, which the truck puts out 3ish. So you’ll either need a beefier AC inverter (624 watts for 5.2 amps) or just charge in DC.

 

It seems like the truck won't have enough power configured as is. Most likely I'll look for hotels with power or a portable inverter charger

 

Not sure why your's is running down, but I have an 80W folding solar panel I tie up on the bimini and connect to the battery. Keeps it charged all day with the stereo running so no need to charge at night.

 

It's a fishing boat so it has a trolling motor with batteries for it. At the end of the fishing day the deep cycles need to be charged.

 

WELL, as someone mentioned above, you can pick up a cheap PWM solar charge controller ($30ish) and a cheap 5w solar panel ($100ish) and charge all you want while you drive. For something like a boat, it seems ideal (it should be pretty easy to secure the panel down on the boat so it won't move while driving), and with the controller you'll never risk overcharging.

edit: hah, sorry, can you tell this was a recent project I worked on?

 

Gonna have to be a huge solar cell or a hella long trip.