Forum Discussion

brulaz's avatar
brulaz
Explorer
Dec 15, 2017

Meanwell PS as input to MPPT controller ??

Will it work?
Will it break something?

The Meanwell is rated at 500W, but I've seen it go up to 600-700W when the batteries are depleted. The EPSolar MPPT is rated at 520W PV input (and output for my 24V battery bank) but up to 3X that input doesn't hurt it.

I can adjust the Meanwell Power Supply up to to a max 32.5V
The max Voc for the EPSolar MPPT controller is 92V.

Guess my main concern is that the Meanwell's max V of 32.5V will not be high enough for the MPPT to charge a 24V battery bank?
(The EpSolar manual does claim an MPP voltage range of 2V~72V)

Have heard rumours of people doing this, but if anybody has some links or other hard info, I would appreciate it.

The reason for attempting this is to have a temperature compensated battery charging profile, instead of the Meanwell's fixed V, and to more closely match the Meanwell with another solar charger's charging profile.

23 Replies

  • Thanks for that link.

    So the problem might be over-heating because of a lack of current-limiting?
    Sounds like if there's a problem it would occur after some time. They're not talking about a flash and smoke.

    I might just carefully try it when we get back to the trailer, and monitor the temperatures, current and voltage. Don't think the Meanwell can supply more current than the EPSolar can handle. But who knows?
  • I tried the 60 cell panel on a 24v bank. The voltage got to 30v and stalled there (needs a 72 cell panel to go higher in voltage) but that 30v is 15 at "12v" so over the 14.8v spec ok. So 30v will recharge a 24v bank, just not be able to do an overcharge.

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,364 PostsLatest Activity: Mar 07, 2026