Hi, stock 2010 Tundra alternator is 150 Amp, I’m thinking of installing genesis off-road’s dual battery system to support Dometic fridge, lots of lights, radio, winch, and charging options, including lights/power for attached trailer - any feedback for or against an alternator upgrade, and what model you’d use if so? I’ve been told by genesis not to go above 300 Amp but maybe this is overkill and I should stay with stock alternator and not fret it. Thanks for any feedback.
2010 Tundra 5.7L V8 Alternator upgrade needed for overlanding? Genesis Off-Road dual battery option… (1 Viewer)
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Many vehicles of that era or even older have alternator's amperage coded into car's config already. If the alternator is upgraded, or some trim has more alternator capacity, this has to be reflected in car's config, so ECU could control power demand from alternator correctly.
I have a 2019 Tundra TRD Offroad with tow package and its stock alternator. Never had any problems with ARB 68 qt fridge nor with LED ambient lights. Fridge and bed cap lighting don't take much amps, I can run it all for a few days on a several years old battery. I have a second battery in bed that does not drain back to the main unless the engine is on.
Winching was never a problem, until recently. A week ago I notice my cabin lights are dimming when the winch has to work hard. But my battery is still factory one. It showed sulfation symptoms after truck sitting for 2 weeks waiting for repair. Guess, it's time for a new one.
I have a 2019 Tundra TRD Offroad with tow package and its stock alternator. Never had any problems with ARB 68 qt fridge nor with LED ambient lights. Fridge and bed cap lighting don't take much amps, I can run it all for a few days on a several years old battery. I have a second battery in bed that does not drain back to the main unless the engine is on.
Winching was never a problem, until recently. A week ago I notice my cabin lights are dimming when the winch has to work hard. But my battery is still factory one. It showed sulfation symptoms after truck sitting for 2 weeks waiting for repair. Guess, it's time for a new one.
I am upgrading the alternator to the Toyota Sequoia 180A factory unit while I'm in there doing the cooling system, Radiator and heater hoses for the winch reason. I have found in the past that when using the winch you're putting a lot of strain on the battery and the alternator and accelerating their replacement interval. It is better to have a higher amperage alternator if you're running a winch.
Agree. I perhaps will allow my second battery (in the bed, for fridge, etc) to draw back into main while winching. No reason/will power to replace the alternator yet, in a 4 y.o. truck.
So what did you do? Old thread revival but curious. I just got my 2010 and have ideas.
