Battery problem update

[Rizmo]

Think about it, where else can it come from?

Sorry but you just don’t understand how the Puma Hybrid works.

I’ll leave it at that because I’m fully aware of how it charges the 48v battery.

If your fully aware and I am wrong (I am not wrong, but I’m talking about the systems I have found info on, not Puma) post your information or I’m afraid you stay wrong. I couldn’t give two hoots either way, it’s a pointless, set to fail expensive gimmick anyway. I am just curious why this system is different and it appears far more basic than the systems I have found information on. BUT I can’t believe that the Lithium battery is charged only when the car is slowing. The Stop Start would hardly ever work.

I've owned 2 mild hybrid Pumas over a 4 year period and in both cases stop/start never failed to work.

[4251]

Sorry but you just don’t understand how the Puma Hybrid works.

I’ll leave it at that because I’m fully aware of how it charges the 48v battery.

If your fully aware and I am wrong (I am not wrong, but I’m talking about the systems I have found info on, not Puma) post your information or I’m afraid you stay wrong. I couldn’t give two hoots either way, it’s a pointless, set to fail expensive gimmick anyway. I am just curious why this system is different and it appears far more basic than the systems I have found information on. BUT I can’t believe that the Lithium battery is charged only when the car is slowing. The Stop Start would hardly ever work.

I've owned 2 mild hybrid Pumas over a 4 year period and in both cases stop/start never failed to work.

Well there you go! That strongly suggests the Lithium battery is not just been topped up by slowing down,

[LordClifton]

I can see this is a long thread already! But I thought I would post my flat battery experience anyway.
I went to start my 3 year old Puma ST (low miles c. 17k) a few weeks ago after it had been sitting overnight and the battery was flat. Lights and audio came on initially for a moment then nothing.
RAC tested the battery thoroughly charging it up again. RAC man said the good news is there was no obvious problem, but the bad news is that this meant he couldn’t tell me what the problem was! Ultimately something was draining the battery while the car was switched off.
I did a quick Google and found a YouTube video from a Ford dealer indicating that the Ford Pass App drains the battery while the car is switched off due to checks and updates carried out by the App.



All totally ridiculous in my book! And yes I had seen a number of deep sleep mode messages on my phone in recent weeks but I assumed this was normal. Anyway I have now disconnected the car from the Ford App and have had no problems since.

[Smartguy67]

I would take with a pinch of salt anyone who has done a battery check using a modern style electronic device for battery checking. Seen it too many times where the AA, RAC, Halfords, Ford dealers check the battery with their electronic gizmo and say the battery is fine, nothing draining the battery but the battery goes flat. Owner changes the battery and 9 times out of 10 the problem is solved.

Batteries need to be checked with a good old fashioned drop tester which puts a load on the battery and tells you how good it is.

Any tyre depot which deals with commercial tyres and batteries will have a drop tester. This is what I am referring to.

https://www.ebay.co.uk/itm/256517346607 ... hYQAvD_BwE

[wgtwiddle]

I did a quick Google and found a YouTube video from a Ford dealer indicating that the Ford Pass App drains the battery while the car is switched off due to checks and updates carried out by the App.



All totally ridiculous in my book! And yes I had seen a number of deep sleep mode messages on my phone in recent weeks but I assumed this was normal. Anyway I have now disconnected the car from the Ford App and have had no problems since.

Interesting. In idle moments I've used the app, trawling through it to see what's what. Quite often, later, when getting in the car, the System Shutdown message is displayed.

[cianpars]

Well that is very interesting. I have been suspecting that the Fordpass app might be incolved for a while and have stopped using it recently to check my theory - no issues so far and I am now tempted to delete it altogether.

Another thing is that when you do charge your battery, make sure to put the black lead to earth rather than the terminal, otherwise it wilk bypass the BMS system and the electronics will not think it has been charged

Finally, when I do recharge my battery, I run the BMS reset procedure as it only takes a few seconds

[Stoopo]

Sorry but you just don’t understand how the Puma Hybrid works.

I’ll leave it at that because I’m fully aware of how it charges the 48v battery.

If your fully aware and I am wrong (I am not wrong, but I’m talking about the systems I have found info on, not Puma) post your information or I’m afraid you stay wrong. I couldn’t give two hoots either way, it’s a pointless, set to fail expensive gimmick anyway. I am just curious why this system is different and it appears far more basic than the systems I have found information on. BUT I can’t believe that the Lithium battery is charged only when the car is slowing. The Stop Start would hardly ever work.

I've owned 2 mild hybrid Pumas over a 4 year period and in both cases stop/start never failed to work.

Well mine has and the only way to get it working again was to charge the 48v battery through regeneration. If the 48v was charged any other way then it wouldn't go flat - but it does.

In my 3.5 years of ownership it's happened a handful of times when I've been driving around town.

[Stoopo]

Here you go:

https://www.google.co.uk/search?q=how+d ... 9sEUc,st:0

[Stoopo]

..and from Ford themselves - video right at the bottom:

https://www.ford.co.uk/hybrid-electric/mild-hybrid

[PumaNL]

I can see this is a long thread already! But I thought I would post my flat battery experience anyway.
I went to start my 3 year old Puma ST (low miles c. 17k) a few weeks ago after it had been sitting overnight and the battery was flat. Lights and audio came on initially for a moment then nothing.
RAC tested the battery thoroughly charging it up again. RAC man said the good news is there was no obvious problem, but the bad news is that this meant he couldn’t tell me what the problem was! Ultimately something was draining the battery while the car was switched off.
I did a quick Google and found a YouTube video from a Ford dealer indicating that the Ford Pass App drains the battery while the car is switched off due to checks and updates carried out by the App.



All totally ridiculous in my book! And yes I had seen a number of deep sleep mode messages on my phone in recent weeks but I assumed this was normal. Anyway I have now disconnected the car from the Ford App and have had no problems since.

On an Iphone, could it be sufficient to close the app and go to ‘settings’ -> apps -> FordPass app -> and turn off ‘refresh in background’ ?