48V powering 24V appliances

[SamDeleted]

What about your MPPT solution? Is it working properly?
Maybe those Meanwell RSD-500-24 or RSD-60-24.
Or take a look at those DWE unit, some have adjustable output voltage: https://www.dwe-oss.eu/overzicht/40v-to-24v-dc-converter/

I decided against it , I was reading about it someone said the trouble when the mppt stops taking input (eg. Battery full) , it will short the pos & neg together, which is ok for a solar panel , but not ok with a big battery bank


End up burning them out I guess

Post in thread 'Charging one battery from another using a Solar charge controller?' https://diysolarforum.com/threads/c...g-a-solar-charge-controller.44851/post-569980



I do have a few spare MPPTs knocking about I might try it and report back

 

[yabert]

Oh! good to know. Thanks to share.
It seem the RSD units are available from 30W to 500W. Sound like a good solution to me.
It's so sad that those small RC hobby charger can't take more than 30-35V at input, if know they will be the best solution IMHO. They are perfect for 24-12V DC/DC charger solution, but it's more complex to find 48-24V DC/DC solution.

 

[SamDeleted]

Oh! good to know. Thanks to share.
It seem the RSD units are available from 30W to 500W. Sound like a good solution to me.
It's so sad that those small RC hobby charger can't take more than 30-35V at input, if know they will be the best solution IMHO. They are perfect for 24-12V DC/DC charger solution, but it's more complex to find 48-24V DC/DC solution.

I'm also concerned about using a constant voltage PSU for charging AGM batteries, they need looking after . I think it works a lot better with LiFePo4 & a BMS . But again I'm no expert

 

[SamDeleted]

They are a good find though, thank you for the link . Cheap price !