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MEXICOWANDERER's avatar
Apr 21, 2015

Meanwell On Amazon

AC to DC Power Supply Single Output 12 Volt 37.5 Amp 450 Watt
by MEAN WELL

Peak to Peak Power
power supply 12V, 450W single output SE-450-12 mean well meanwell
http://www.peaktopeakpower.com/specs/se-450.pdf
Input Voltage: 90-132VAC / 180~264VAC; Watt Range: 450

4 new from $66.60
  • I just finished sticking a 200-watt adjustable DC to DC booster atop a 94-watt power supply brick. The danged booster actually regulates the brick -lower- than it's nominal 12.72 open circuit voltage. The brick pumps out a cool 6.22 amps at 14.7 volts. But it's meant to float the Lifeline at 13.3 volts.

    That Meanwell has a remote voltage sense lead line. It would be a great power supply for a smaller rig allowing the main charger to do a job on the batteries. The Meanwell is a cleaner power supply than the normal RV converter.

    Not happy with the meters that arrived for the Borg. Too small numbers. Too dim. Lousy sampling rate. I may go with an analog ammeter and digital voltmeter.

    I have the micrometer adjustment knobs and Bourns 10-turn 2-watt pots. I need to get a-hold of a die-maker's type rotary grinder and a good 1/8" carbide router bit. Time to get the Borg finished.

    BTW the 16.0 volt power bricks from MPJA.com work perfect.
  • The MW Se-450-12 Spec sheet claims it shuts down on overload, instead of claiming constant current limiting on overload.

    http://www.meanwell.com/search/se-450/SE-450-spec.pdf

    If your battery is depleted enough to max out this unit, it will likely cycle on and off,

    Instead of holding a solid 40 amps until Absorption voltage is neared, like my MeanWell rsp-500-15.

    The se-450-12 also lista a maximum voltage of 13.5v, but likely goes higher.

    My rsp-500-15 claims a maximum voltage of 16.5 but actually goes to 19.23v. Take that sulfation... Bwahahahahuuhahahaaaaa.

    I do not think the se-450-15 is a good unit for battery charging applications. Perhaps for being a power source at float voltages, but fast charging, or EQ'ing, the megawatt will outperform it.

    A shame the MW RSP-500-15 is on backorder at most sites, but I think it was well worth the 127$ I paid for it with tax and shipping last September