Mean Well power supply for my usage
I've been reading old threads for a couple of hours. I'm fairly sure a Mean Well p.s. can do what I want to do, but I'd appreciate if one of you early adopters can point me to a specific model, etc. ...
Forum Discussion
I am the original early adopter... I bought a Mega Watt for $55. I have one 150 AH battery. That's a hair less than a pair of Group 27s DC's.
The Mega Watt I bought puts out 33 amps. Set the voltage for 14.8 V at the power supply unit terminals, unhooked from the batteries, but powered up by your onan generator.
Run some 6 gauge wire, or 2 10 gauge wires per terminal.
Get a 2 hour timer, see mexicowanderer's thread on the model, a mechanical timer, Intermatic??? and plug the Mega Watt into that.
you can buy a Mega Watt 400-15, and for your two batteries it will do a better job, in a bit less time.
Fat wire, short run from the PSU to your batteries, to minimize V loss. 2 hours should do you just fine. It works outstanding for me on my set up, as my 150 ah battery is almost double what your pair of 27's rate out at. I use the 30 amp version, works great for 2 hours.
MegaWatt
If you are a weekend warrior, or a week long warrior, a few times a year, then yes, you are on the right track with going this route. I can say without hesitation, MexWanderer's recommendation worked flawlessly for me. Rainy day? One hour in the morning charging, and then once it got dark and the lights and stereo went on, 1 to 1.5 in the evening, until shut off time at 9 pm. Get my 2 to 2.5 hours in, battery was always in good shape come morning. this 2x a day routine keeps the gen time to a minimum for amount of time the power supply unit stays in bulk mode, somewhere with battery charge between 60-65% and 90% SOC, in the meat, eating the amps efficiently, while the generator runs.
The Mega Watt I bought puts out 33 amps. Set the voltage for 14.8 V at the power supply unit terminals, unhooked from the batteries, but powered up by your onan generator.
Run some 6 gauge wire, or 2 10 gauge wires per terminal.
Get a 2 hour timer, see mexicowanderer's thread on the model, a mechanical timer, Intermatic??? and plug the Mega Watt into that.
you can buy a Mega Watt 400-15, and for your two batteries it will do a better job, in a bit less time.
Fat wire, short run from the PSU to your batteries, to minimize V loss. 2 hours should do you just fine. It works outstanding for me on my set up, as my 150 ah battery is almost double what your pair of 27's rate out at. I use the 30 amp version, works great for 2 hours.
MegaWatt
If you are a weekend warrior, or a week long warrior, a few times a year, then yes, you are on the right track with going this route. I can say without hesitation, MexWanderer's recommendation worked flawlessly for me. Rainy day? One hour in the morning charging, and then once it got dark and the lights and stereo went on, 1 to 1.5 in the evening, until shut off time at 9 pm. Get my 2 to 2.5 hours in, battery was always in good shape come morning. this 2x a day routine keeps the gen time to a minimum for amount of time the power supply unit stays in bulk mode, somewhere with battery charge between 60-65% and 90% SOC, in the meat, eating the amps efficiently, while the generator runs.
