Reduced battery capacity to 64kWh

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Abu Dhabi Dude
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Joined: Sun Feb 02, 2020 9:34 pm
Location: United Kingdom

Re: Reduced battery capacity to 64kWh

Post by Abu Dhabi Dude » Thu Nov 26, 2020 4:48 pm

I would try running it low (10% or less) and then charge it up (maybe even at a reduced charge rate or with a granny charger if you can find a long period when you don’t need the car). Charge it right up to full and leave it plugged in until the car completes balancing the cells. Maybe even do that 2 or 3 times if you can. You may find that recovers some kWh for you. Made a big difference with mine.

Jaganon
Posts: 61
Joined: Fri Oct 26, 2018 5:43 pm
Location: Croydon

Re: Reduced battery capacity to 64kWh

Post by Jaganon » Fri Nov 27, 2020 7:40 am

I had a similar energy reading when my car had a module replaced. Following similar to ADD’s method, a couple more kWh was showing on the estimated energy. Enjoy having to drive it a few times to use up the juice.
I Pace FE MY19 delivered 30.10.18: Santorini Black, Oyster, 22” Carbon
18.2

stok40
Posts: 10
Joined: Tue Sep 29, 2020 5:06 pm
Location: Greece

Re: Reduced battery capacity to 64kWh

Post by stok40 » Fri Nov 27, 2020 6:59 pm

Thanks for your answers. Actually I notice a fluctuation in wattcat optimization between 90 and 96, is this the case with most cars? If I do the slow-charge-from-10% trick, should I expect that this fluctuation will stop? What is the experience of other owners here?

And does the hazard lights on trick actually work?

russyj
Posts: 28
Joined: Sun Jun 28, 2020 8:34 pm
Location: UK

Re: Reduced battery capacity to 64kWh

Post by russyj » Fri Nov 27, 2020 7:58 pm

For those who’ve been through cell failure, how low is the capacity when you lose a cell? MyPace regularly shows 100% at around 74kW for me, which seems neither high enough to be OK nor low enough to be an actual issue?

Thanks!

RobN
Posts: 146
Joined: Tue Feb 04, 2020 9:09 am
Location: UK

Re: Reduced battery capacity to 64kWh

Post by RobN » Fri Nov 27, 2020 11:27 pm

russyj wrote:
Fri Nov 27, 2020 7:58 pm
For those who’ve been through cell failure, how low is the capacity when you lose a cell? MyPace regularly shows 100% at around 74kW for me, which seems neither high enough to be OK nor low enough to be an actual issue?

Thanks!
Not sure if you’ve got a cell failure but 74kWh seems a bit on the low side, I regularly get around 83kWh at 100% on MyPace. Be interesting to know what other folk on the forum get?
SE MY20 Corris Grey, 20” wheels, oyster leather 10 way seats, panoramic roof, black trim + privacy glass + 7kWh Podpoint & ICE XK8 Conv 1996 (Jag owner/enthusiast since 1994 :D )

Fluff
Posts: 157
Joined: Thu May 21, 2020 9:26 pm
Location: UK

Re: Reduced battery capacity to 64kWh

Post by Fluff » Fri Nov 27, 2020 11:34 pm

With a cell failure, you will lose the whole string, until the failed cell is replaced.

Once repaired, the battery will need a couple of cycles to recover its total overall capacity.

Charging slowly and leaving it on charge to balance will bring back some capacity, the granny charger is ideal for this.
I-Pace SE 2019[Everything BLACK] Santorini,Pano, 20' BLACK,winter pack, adap cruise.

Jaganon
Posts: 61
Joined: Fri Oct 26, 2018 5:43 pm
Location: Croydon

Re: Reduced battery capacity to 64kWh

Post by Jaganon » Sat Nov 28, 2020 8:45 am

When mine had a cell failure, the estimated energy was around 62KWh with 150 miles range driving Miss. Daisy. This is around 25% down on full, showing the string being inoperative.

74% is hopefully to do with balancing?
I Pace FE MY19 delivered 30.10.18: Santorini Black, Oyster, 22” Carbon
18.2

russyj
Posts: 28
Joined: Sun Jun 28, 2020 8:34 pm
Location: UK

Re: Reduced battery capacity to 64kWh

Post by russyj » Wed Dec 09, 2020 7:00 am

RobN wrote:
Fri Nov 27, 2020 11:27 pm
russyj wrote:
Fri Nov 27, 2020 7:58 pm
For those who’ve been through cell failure, how low is the capacity when you lose a cell? MyPace regularly shows 100% at around 74kW for me, which seems neither high enough to be OK nor low enough to be an actual issue?

Thanks!
Not sure if you’ve got a cell failure but 74kWh seems a bit on the low side, I regularly get around 83kWh at 100% on MyPace. Be interesting to know what other folk on the forum get?
Did a granny charge from 6% all the way up uninterrupted and MyPace now showing 81.4kWh so thanks for the tip! Interestingly guess-o-meter still shows exactly the same mileage so the car must know it’s always been right.

Watching it run during Octopus Agile peak period was agony though :D

i-Tray
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Joined: Sun Jun 16, 2019 9:57 am
Location: United Kingdom

Re: Reduced battery capacity to 64kWh

Post by i-Tray » Thu Dec 17, 2020 10:29 pm

Just got mine back after a 7 week wait. Dealer did not identify problem on first visit, despite ‘full diagnostics’ test, which did NOT include a capacity test they told me.
Had to supply months of charge data to prove my point; ie typical range 150miles, would not charge much beyond 50kwh, etc.
Second visit, which took 7 weeks, resulted in 1 module replaced and a pressure test that revealed a need to reseal the whole battery frame.
First Edition, Photon red, 22" wheels.

Jaganon
Posts: 61
Joined: Fri Oct 26, 2018 5:43 pm
Location: Croydon

Re: Reduced battery capacity to 64kWh

Post by Jaganon » Fri Dec 18, 2020 8:23 pm

All OK now I-Tray?
Was it Harwoods Croydon?
I Pace FE MY19 delivered 30.10.18: Santorini Black, Oyster, 22” Carbon
18.2

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