Hi. I just bought a Renogy DC-DC charger (it is the 50 amp charger) with MPPT. It says that the max PV for this charger is 25 volts. My pannels are 24 vots, but is says in the back of my solar pannels 29.4 volts (VPM 29.4v). Will this charger be able to charge my batteries with my pannels? Or it will NOT work, or even f**k my new charger... I don't want to burn (or else) my new charger... Tks. to you guys.
Renogy DC-DC charger with MPPT
- Thread starter Camginger
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sunshine_eggo
Happy Breffast!
It will not work and may f**k your new charger.
Voc must be under 25V AND there must be sufficient margin for cold temperatures. This means that the panel Voc must be under 22V depending on your climate.
I suspect you have 60 cell panels with a Voc around 35-36V.
Voc must be under 25V AND there must be sufficient margin for cold temperatures. This means that the panel Voc must be under 22V depending on your climate.
I suspect you have 60 cell panels with a Voc around 35-36V.
rodrick
Free energy enthusiast
You want to use the voc numbers on the panels adjusted for lowest recorded temperatures fore your area
voltage will go even higher in cold temperatures
look at the victron line of scc they have dropped in price and are better quality than most of the Chinese models
voltage will go even higher in cold temperatures
look at the victron line of scc they have dropped in price and are better quality than most of the Chinese models
rodrick
Free energy enthusiast
you need to decide how your panel layout is going to be done like how many series or parallel ect then size the scc with known specs including adjustments for temperature, midnight and victron have a site for scc sizing which will help you
mikefitz
Solar Wizard
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Check which version of Renogy DCC50 you have. The latest version can accept panel volts up to 50 volts.
This is the version currently sold in the UK.
Last edited:
sunshine_eggo
Happy Breffast!
yodamota
Solar Enthusiast
looks like in North america, the 50vdc VOC is not a thing. All I see are 25VOC.
Tks for your answer. What does
''scc'' means?
Partimewages
Solar Addict
Solar Charge Controller
Tks.
Tomthumb62
Solar Wizard
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- Sep 25, 2022
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I finally rid myself of most of my Renogy gear, I think you dodged a bullet there. All my renogy gear gave me headaches.
I second a Victron Smartsolar charge controller. For example their 100/30 model can accept up to 100V input from the panels and output a max of 30A. Price is now $123 in the states, it was $209 when I bought it in September. Perhaps someone with Canadian connections can help you find a dealer there.
Victron also has DC-DC chargers. Here’sa good video of a guy who started with a Renogy DC-DC charger and then switched to a Victron one:
I second a Victron Smartsolar charge controller. For example their 100/30 model can accept up to 100V input from the panels and output a max of 30A. Price is now $123 in the states, it was $209 when I bought it in September. Perhaps someone with Canadian connections can help you find a dealer there.
Victron also has DC-DC chargers. Here’sa good video of a guy who started with a Renogy DC-DC charger and then switched to a Victron one: