Granny charging with Batteries+PV

2504 Views 17 Replies 7 Participants Last post by Spiny, 14 d ago

Alshamal

Discussion Starter · 14 d ago

I have 12.8KW of batteries which are 100% full by lunch time! So I’ve been using the granny charger when i‘m at home in the afternoon, but i would like to do if possible would be to take 30/40% out of the batteries in the morning and then the Solar will charge the batteries back up in the afternoon when i‘m not about!

Is there a way i can just draw from the batteries and solar and stop using from the Grid!

I have a Lux 3600 ac inverter.

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Cheshirecat

· #2 · 14 d ago

Surely, everything you draw in the house IS coming from the batteries already unless your load is exceeding the inverter limit ?
This would include a plugged-in Granny

Just use a Smart plug (Tapo or similar) to time the granny and, if yours has the facility, turn the granny down to 6a….should drain batteries at 10% an hour ( less the solar at that time)
( or did you mean that the car is not there in the morning…doh)

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Cheshirecat

· #6 · 14 d ago

Why not run the Granny evening/night whilst not using the cheap rate Go

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Cheshirecat

· #8 · 14 d ago

Where is your fridge and TV currently drawing from ??

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Cheshirecat

· #10 · 14 d ago

Where is your fridge and TV currently drawing from ??

Alshamal said:
From the batteries!

well your granny will run from the batteries as well
If you turn it down to 6amps ( 1400 watts-ish) it should pull 11% -12% out of your batteries each hour

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