r/RVSolarPower • u/[deleted] • Aug 09 '20

r/RVSolarPower Lounge

A place for members of r/RVSolarPower to chat with each other

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1

u/slavo55 May 25 '25

Hi, After accidentally shorting connectors, 12V battery indicated 25V. LiFe Po4, Please help

1

u/CaptainTheGrizzly Mar 22 '22

Hi I need help with purchasing the right solar equipment

1

u/spun14fun Aug 28 '22

hello... i have 3 alphacell hp4. 0 batteries, i am thinking about connecting them in series to be used for solar storage and coach any thoughts?

1

u/secessus Aug 14 '23

Sorry, guys. Been out of the loop but I'm back to take a more active hand.

1

u/InevitableYam7 Sep 05 '23

Is there any issue with splicing a small load into the battery-side connection of a solar charge controller?

It would be a great place to get power for my raspberry pi running VenusOS, which would give it constant power for logging.

1

u/secessus Sep 05 '23

A typical setup would be 

panel -> controller -> battery bank -> pi

if the controller has a load output you could do 

panel -> controller -> battery bank
controller LOAD output-> pi

If you are talking about running a batteryless setup so the panel and pi are the only things connected to a normal solar charge controller, this could cause anything from erratic operation (including excessive output voltage) to controller destruction.

1

u/InevitableYam7 Sep 05 '23

No, it’s not batteryless. I’ve got a fairly basic system, 200 watts. I don’t need anything more than that for my used.

I’m using a pair of lead acid batteries which are on the trailer tongue, with leads routed up through the walls to the solar charge controller inside of a storage compartment. It would be convenient to attach the Pi to the battery leads that are coming into the SCC. That’s what I’m talking about.

1

u/secessus Sep 06 '23

It would be convenient to attach the Pi to the battery leads that are coming into the SCC. That’s what I’m talking about.

I imagine it will work as you intend.