Won’t charge at 125kW charger

Rod137

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Mar 17, 2025
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Location
Norfolk UK
Driving
MG5 Trophy LR
On long journeys charge at InstaVolt roughly 50kW charger. Tried another location with 125kW charger and wouldn’t charge.
 
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I found with Shell chargers I need to lock the car immediately after connecting the cable or it won't work. after a few minutes you can open the door & it still charges
 
Ever since I started to turn off the 'Start' button I have had no problems beginning charging - after it starts then I push the 'Start' again without the foot on the brake to bring the radio back on.
 
On long journeys charge at InstaVolt roughly 50K charger. Tried another location with 125K charger and wouldn’t charge
Not all rapid chargers work the same way.
Check the connection and payment order.
What was the second charger and are you using a CC, RFID card or app to start a charge?
 
On long journeys charge at InstaVolt roughly 50K charger. Tried another location with 125K charger and wouldn’t charge
Often with the bigger chargers I find the cable is too heavy so I hold it in until the lock engages, which seems to stop this.
 
Not all rapid chargers work the same way.
Check the connection and payment order.
What was the second charger and are you using a CC, RFID card or app to start a charge?
Tried 3 different chargers all 125. Started to charge then abruptly stopped. After third one car display showed HV Battery disconnected. Fortunately this did not persist after restarting.
 
Tried 3 different chargers all 125. Started to charge then abruptly stopped. After third one car display showed HV Battery disconnected. Fortunately this did not persist after restarting.
What brand of charger? I had an MG4 at one point that certain chargers weren't compatible with the car
 
I used to suffer from the same issue on selected rapid chargers, primarily Instavolt and Ionity. As soon as charging started, it would stop. The charger would indicate the car was stopping the charge.

Once you have a failed charge, getting it going again can be a pain and frequent attempts causes the HV battery to disconnect. Only a power off and wait for 5 mins resolves this.

To avoid the issue in the first place:

1) Turn off the car.

2) Connect the charger.

3) Lock the car (or on FL models, you can tap 'Lock' on the central display if you intend on waiting in your car whilst charging). You'll hear the charging port on the car lock the cable in place.

4) Start charging*

Once charging, you can unlock the car to get back in again. Note that charging will pause when the car is unlocked, and will not resume until you re lock it.

* If you are at a charger that requires you to tap your payment card before the charger will release, lock the car via the fob as soon as you plug it in. If the charger attempts to start charging whilst the port is unlocked, charging may fail.

I've had a 100% success rate on all rapid chargers since following this process.
 
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