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orhka avatar image
orhka asked

My solar system 100/15 victron shows loading with about 100w, but batteries are not charged. This system worked properly till 2 days ago now mistake occured

battery charging
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Paul B avatar image Paul B commented ·
Not enough information to help you please send screen shots of the outputs and also of the settings, otherwise chaeck all your connections and check the voltages at all the connections.
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2 Answers
orhka avatar image
orhka answered ·

this are scheenshots with 46 W in the evening, I will add one of the settings when I return
db4485ed-e0f9-4bbf-9719-2b58d629899f.png



5f00ace3-d433-421c-b052-f2b327004330.png


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Paul B avatar image
Paul B answered ·

See the numbers I have placed on the picture below and refer below comments.

1. the Battery IS WAY over discharged (if its lead acid it should never go below about 12.2 volts or 50% of its capacity, over discharge causes drastic reductions in life span).

2. the daily yield is the same or similar for all days, so its yield seems fine.

3. you will notice that as each day has passed that the Min voltage is less and less per day


4 days ago the battery was full basically at 14.12v Peak voltage after that its been a downhill run. but solar yield has stayed constant,

So to me it seems You are using more power than your solar system is producing thus your battery is going flat over a period of days

its the same as water tank, as a example see below

if its a 200 ltrs tank and you take out 100 ltrs each day and put only 50 back then after 4 days you will have a empty tank or water


1628949428307.png



1628949428307.png (127.3 KiB)
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