Explain this!! Electrical drain overnight! (6 Viewers)

[WESTY66]

So I rolled up to an aire yesterday, 56% on the batteries (600ah lithium) I was next to the leccy bollard which had €1.99 credit on it so I plugged it in and began charging up to around 80%. The weather was atrocious so I put another €2.00 to bring it up to around 100% and that was around 8.00pm. We went out for dinner and the balance was €0.00 BUT left the plug in, came back and watched two hours worth of tv (12v) and went to bed, still with ehu lead plugged in! Woke up this morning NOTHING that’s 240v plugged in, only usual phone charging and 12v FF in garage, alde OFF, fridge on gas and my batteries was 26% so it’s used around 65-70% overnight!!
Can anyone explain this??? Lenny HB RogerIvy anyone??

 

[RogerIvy]

How far apart (or similar) are the BMS with the shunt?
When the batteries got to 100% were they still receiving charge or had the BMS reached over-voltage-protection?

 

[WESTY66]

Battery 1 36 soc

Battery 2 34 soc

Shunt 29% Soc

I’ve just shoved a few euros in the meter and it’s charging again!
I just don’t understand what’s zapped all the power, has the bollard took it back cos I didn’t unplug the lead? Has some unscrupulous German sucked my power out of my van in the night

 

[Mikey RV]

Reversed polarity the aire took it back.

 

[WESTY66]

Reversed polarity the aire took it back.

You’re laughing, but have they
When it’s charged up I’m unplugging it

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[Two on Tour]

What have you got plugged in that's drawing 40 & 78 amps Adi, as that will suck the life out of your battery fairly quickly.

 

[RogerIvy]

Check if your fridge is set to 12v
Something sucked the power out.
Also, as the shunt is so far from the BMS I doubt the batteries got to 100%

 

[WESTY66]

What have you got plugged in that's drawing 40 & 78 amps Adi, as that will suck the life out of your battery fairly quickly.

Nothing that I don’t use every day atm iPhone and watch charging, compressor FF in garage (that’s always plugged in)

 

[MichaelT]

Media button left on?
Inverter on?

 

[WESTY66]

Check if your fridge is set to 12v
Something sucked the power out.
Also, as the shunt is so far from the BMS I doubt the batteries got to 100%

Yeah that’s what’s puzzling, the fridge is on gas, the compressor FF in the garage is always on, Alde off.
We’ll have a chat at lincoln
It did. this once before and went down to 57% so I asked uncle Lenny HB First thing he said is the alde on, and yea it was on electric but last night it was turned off altogether

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[WESTY66]

Media button left on?
Inverter on?

Nope just lights and pump, inverter is the multiplus 3000w

 

[MichaelT]

Nope just lights and pump, inverter is the multiplus 3000w

So you sure your getting power from bollard?

 

[Pausim]

Is your thumping great inverter powering something like hot water heater without you realising it?

 

[WESTY66]

So you sure your getting power from bollard?

Yes

 

[EuroTrotters]

Bit of a brief and abrupt heading !

Is that a request or demand ?

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[WESTY66]

Is your thumping great inverter powering something like hot water heater without you realising it?

No the alde is off

 

[WESTY66]

Bit of a brief and abrupt heading !

Is that a request or demand ?

Now edited, just a polite request from peeps with far more knowledge than me

 

[RowleyBirkinQC]

Too obvious but do you run an aircon off the inverter?

 

[WESTY66]

Too obvious but do you run an aircon off the inverter?

Unfortunately I don’t have aircon

 

[MichaelT]

YesView attachment 948089

Does the charger SOC match with the shunt?

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[WESTY66]

Does the charger SOC match with the shunt?

Check post #3

 

[MichaelT]

Check post #3

Cheers didn't have the charger picture.

 

[Lenny HB]

What have you got plugged in that's drawing 40 & 78 amps Adi, as that will suck the life out of your battery fairly quickly.

That's charging current positive figures.

 

[AdrianChen]

As the weather is crap, is there any chance rain has got into somewhere it shouldn't?

 

[funflair]

What have you got plugged in that's drawing 40 & 78 amps Adi, as that will suck the life out of your battery fairly quickly.

Isn't that while he is plugged in so it's amps going in not out, our Victron show - when amps are out.

EDIT Lenny typed it while I was checking my Victron app to make sure it did show - on discharge.

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[WESTY66]

As the weather is crap, is there any chance rain has got into somewhere it shouldn't?

I wouldn’t have thought so, but who knows

 

[Lenny HB]

No the alde is off

The Alde is about the only thing in your van that would take that amount of current. Even the fridge running from the inverter wouldn't use that much.

Have you got the timer set on the Alde for hot water or heating & you have cocked up the settings?

At least you have the Multiplus and can get a decent charge back into the batteries quick. (my reason for fitting one MichaelT)

 

[RogerIvy]

I make it a habit just before hitting the sack to do a last check on SOC and more importantly what current is being drawn from the batteries. That way I avoid surprises. Even things like laptops draw a surprising amount of power and Soc if left on.

 

[ChrisL]

According to your shunt you used 402.6ahs since your last full charge that's a lot of current, if you are sure that you have nothing substantial left on overnight there must be a faulty diode somewhere that is allowing a flow back to earth I would think.

 

[WESTY66]

The Alde is about the only thing in your van that would take that amount of current. Even the fridge running from the inverter wouldn't use that much.

Have you got the timer set on the Alde for hot water of heating d you have clocked up the settings?

At least you have the Multiplus and can get a decent charge back into the batteries quick. (my reason for fitting one MichaelT)

Alde definitely off

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