Charge percent

[Mamamamam]

Hello! Totally new to EVs so apologise if this is a stupid question. I have the Ohme Pro charger and a 2020 MG ZS excite.
I plugged in at home for the first time today, but can't see anywhere what percent I'm charged? Am I missing something? Is the only way to see how much charge the car is on by actually getting inside?
Thank you!

 

[Jomarkh]

Hi, the Ohme will tell you how much has been added but does not know what charge the car has so lie you say you have to look inside the car.
My daily commute uses about 35% battery so that is what my Ohme is setup to add each night.

 

[Mamamamam]

Hi, the Ohme will tell you how much has been added but does not know what charge the car has so lie you say you have to look inside the car.
My daily commute uses about 35% battery so that is what my Ohme is setup to add each night.

Thanks so much that's really helpful! So will it stop charging when the car is full, say I plugged in to do a 100% charge today but was already at 85% would it have stopped by itself?

 

[drmcw]

The car will stop the charge when it hits 100% so you can be reassured that you won't return to a drive full of electrons!

 

[Gadget Geek]

Thanks so much that's really helpful! So will it stop charging when the car is full, say I plugged in to do a 100% charge today but was already at 85% would it have stopped by itself?

Yes, the battery management system (BMS) takes care of all that for you.

 

[Jomarkh]

It will charge to 100% at 7.5kwh and then drop to 300-500w while it does a battery balance.

 

[Mamamamam]

The car will stop the charge when it hits 100% so you can be reassured that you won't return to a drive full of electrons!

Hahaha!! Phew!

 

[Gadget Geek]

Oh, and welcome to the forum and the world of EV driving. You are going to love it.

 

[Mamamamam]

It will charge to 100% at 7.5kwh and then drop to 300-500w while it does a battery balance.
Are you using a 'granny'?

What is a battery balance and what is a granny? I am totally new to all this sorry!

 

[John G]

Thanks so much that's really helpful! So will it stop charging when the car is full, say I plugged in to do a 100% charge today but was already at 85% would it have stopped by itself?

The car controls the charge. It will stop it automatically at 100% but will slow right down to a slow trickle as it does so to balance the cells. This should be done about once a month if you don't use rapid chargers often or more often if uou do. If possible it's best to let the battery run down to about 20% or lower and then charge upto 80%. Avoid topping up from 75 to 100 if you can.

 

[Jomarkh]

The granny is the box with the plug on it that xam with the car. I deleted that bit as you use a wall unit?.
A balance is recommended once a month so the battery cells are all the same voltage and hopefully will last longer?

 

[Mamamamam]

Also actually -

The car controls the charge. It will stop it automatically at 100% but will slow right down to a slow trickle as it does so to balance the cells. This should be done about once a month if you don't use rapid chargers often or more often if uou do. If possible it's best to let the battery run down to about 20% or lower and then charge upto 80%. Avoid topping up from 75 to 100 if you can.

Oooo this is all getting a bit technical for me now, I just plugged it in for the first time today I'm learning!
How do I know how to charge to 80% if the Ohme charger 'adds' to the charge.. do I have to do the math every time I get out the car?

 

[Mamamamam]

The granny is the box with the plug on it that xam with the car. I deleted that bit as you use a wall unit?.
A balance is recommended once a month so the battery cells are all the same voltage and hopefully will last longer?

So to 100% once a month? I'm still confused how to know how much charge to 'top up' with!

 

[John G]

You will get the hang of it in time. If you are going to use the top 20% in the morning, to commute for example, charging to full is not a problem. The battery just doesn't like to be full for a long time.

 

[drmcw]

Also actually -

Oooo this is all getting a bit technical for me now, I just plugged it in for the first time today I'm learning!
How do I know how to charge to 80% if the Ohme charger 'adds' to the charge.. do I have to do the math every time I get out the car

I'd ignore the Ohme settings for now and just charge the car and let it switch things off. As you get used to the car you'll work out what sort of % you are using from the battery and then knowing the battery is about 40kWh total you'll get an idea of how many kWh's are need to get to a certain battery %. You can then start using the charger settings to get you to the 80% ish mark for the majority of the charges.

 

[Mamamamam]

You will get the hang of it in time. If you are going to use the top 20% in the morning, to commute for example, charging to full is not a problem. The battery just doesn't like to be full for a long time.

My commute is around 100 miles round trip so should probably leave the house with 100% charge to be on the safe side so this is useful to know thanks!

 

[John G]

Well you will have no problem. Yes charge away every night! Enjoy your ZSev.

 

[drmcw]

Well you will have no problem. Yes charge away every night! Enjoy your ZSev.

...and turn of the Ohme settings so the car has full control of the charge.

 

[Jomarkh]

...and turn of the Ohme settings so the car has full control of the charge.

It's a 2020 so I don't think it can talk to the EVSE

 

[Maciej]

The charger doesn't push power into a car it is a car that draws a power from a charger. Car is fully in control of power you can't force feed it. Think of it as a pump your charger is a well your car is a pump drawing water from it unless it's actively drawing no power will flow.