Home 7KWH charger idle power usage

Delboy102000

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Hello everyone, apologies if this has been covered previously but my question is what is the typical consumption power wise 7 kW own charger either when it’s on equalisation or on idle with nothing plugged in at home. Presumably when nothing is plugged in it is just like having a TV on standbyAnd as the charge rate drops off nearing completion of the charge does the power demand from the charger also commensurately reduced.
 
It can be several hundred Watts during equalisation but at idle it will only be running on board computers/displays/communications so typically less than 10W I'd say.
It's lost in the noise compared to the rest of the house.
 
Further to the previous posts and answers I can now confirm that after four hours charging to 100% on a recent charge my 7 kW HomePods point took a further 1.6 kW of power over a four hour equalisation period. I wasn’t sure whether that would be the experience of people with other home charges.
 
Are you talking about 1.6kWh in total or 1.6kW per hour over 4 hours=6.4kWh?
 
I have studied my home energy meter while both charging and balancing.
While charging from a SOC of below around 97% it will report around 7 kW/h of juice being pulled by the car.
At around 98 - 99% it will then throttle back to pulling 3.5 kw/h until it reaches 100%.
Balancing will commence and the demand falls back to around 500 Watts.
Just prior to the balancing completing, the demand will drop down to 175 Watts.
Soon after this, the car will complete the balance and return the wall box to the standby condition.
Balancing on the latest BMS can take around two and a half ( ish ) hours.
Balance times with the original factory software is a lot less.
Around 30 minutes to 1 hour ( ish ).
On the latest software, the buffer at the top of the battery has been increased.
Maybe this explains the increased time it takes to balance the pack ?.
Pure guess work on my part here folks.
 
Are you talking about 1.6kWh in total or 1.6kW per hour over 4 hours=6.4kWh?
Hi, no a balancing period of four hours took about 1.6kw after 100% charge was reached. I was asking if that was normal? Incidentally my balance charge is always about four hours even though I have not used any fast charging away from home. I only use my 7kw home pod point or top up at the free Tesco ones when shopping which are also 7kw pod points
 
Hi, no a balancing period of four hours took about 1.6kw after 100% charge was reached. I was asking if that was normal? Incidentally my balance charge is always about four hours even though I have not used any fast charging away from home. I only use my 7kw home pod point or top up at the free Tesco ones when shopping which are also 7kw pod points
The length of the balance period is generally governed by the amount of imbalance in the battery.
The longer the time, the more of a imbalance is likely.
When the latest BMS is applied, depending on the SOH of your battery, prior to the update.
Then the balance time is likely to be long to start with, but will slowly reduce over time.
From my experience, you are unlikely to see a balance time of one hour, like on the previous software.
Just bare that in mind.
At about two hours, is what I have seen it taking at BEST ( or least ) on my car.
Just to say, that my car was never affected by the buggy software, so my imbalance was likely to be small to start with.
It has been reported that cars with affected imbalanced packs, where going to take a large number of charge / balance in order to chase the magical unicorn ? figures of 450 volts and 163 miles of range, which is seen as the NEW normal after the update has been applied.
It’s all to easy to be totally consumed by this target ?.
If your car is returning the figures suggested, then I would not get to stressed by the whole thing.
Any A/C supply can be used to carry out the balancing process.
Not a D/C rapid of course.
Balancing on a public charging post, may not seem like a good idea though, given the amount of time this will tie up the post ?.
 
I have studied my home energy meter while both charging and balancing.
While charging from a SOC of below around 97% it will report around 7 kW/h of juice being pulled by the car.
At around 98 - 99% it will then throttle back to pulling 3.5 kw/h until it reaches 100%.
Balancing will commence and the demand falls back to around 500 Watts.
Just prior to the balancing completing, the demand will drop down to 175 Watts.
Soon after this, the car will complete the balance and return the wall box to the standby condition.
Balancing on the latest BMS can take around two and a half ( ish ) hours.
Balance times with the original factory software is a lot less.
Around 30 minutes to 1 hour ( ish ).
On the latest software, the buffer at the top of the battery has been increased.
Maybe this explains the increased time it takes to balance the pack ?.
Pure guess work on my part here folks.
My experiences and numbers are very similar to yours.
 
Hi, no a balancing period of four hours took about 1.6kw after 100% charge was reached. I was asking if that was normal? Incidentally my balance charge is always about four hours even though I have not used any fast charging away from home. I only use my 7kw home pod point or top up at the free Tesco ones when shopping which are also 7kw pod points
The key metric to check is your fully charged HV voltage reading with auxiliary items switched off. That will indicate how balanced your pack is. ?
 
The key metric to check is your fully charged HV voltage reading with auxiliary items switched off. That will indicate how balanced your pack is. ?
It shows between 448-450 volts. That is since the latest BMS was installed. However my real question was geared towards the usage of power during equalisation and what is the norm for equalisation and power usage.
 
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