1 minute ago, unofix said:

Well now that set me thinking. My car is just over 4 years old and I've never reset the BMS so why is it showing today 498 days ?

Perhaps it can only count to 999 and then rolls back over to 001 ???

Yep, I replaced our battery just as the first Lockdown hit, so I know it's definitely more than 360 days in service. I'm thinking along the lines that it either reset when I altered the parameters including changing from 80% to 95% as it fits in the timeline.

Has anyone managed to solve not getting above 60 ish soc despite charging? I've had my battery's checked by halfords and it's almost new capacity so not battery. Of course stop start isn't working this happened about 3 weeks ago. 

I have a 13 month old efb varta battery 700a vs 620 original I think, 402 days in service. I only changed the soc max in forscan to 80pc last and reset bms. 

 

I'm stumped as to why it isn't getting past 63%.

Thanks 

14 minutes ago, Ajsfocus said:

. I only changed the soc max in forscan to 80pc last and reset bms. 

Oh dear.

Better change that to 95% as quickly as possible. NEVER ever reset the BMS unless you have installed a brand new battery.

I'm not sure how you changed the SOC to 80% because all cars leave the factory set to that by default. 🤔

15 minutes ago, unofix said:

Oh dear.

Better change that to 95% as quickly as possible. NEVER ever reset the BMS unless you have installed a brand new battery.

I'm not sure how you changed the SOC to 80% because all cars leave the factory set to that by default. 🤔

Thanks it could be 85 pc come to think of it, I remember only increasing by 5pc above standard not too greedy ha but why is halfords saying my battery is good but soc isn't getting above 63 surely it's not true? 

Bms module is version D at the end of the part number. 

11 minutes ago, Ajsfocus said:

why is halfords saying my battery is good but soc isn't getting above 63 surely i

The 'health' of the battery is not the same as the 'State Of Charge' of the battery. It is quite possible to have a battery which is in good health but has a low state of charge.

In your case I suspect that the car is simply not being used enough and not being driven far enough each trip for the battery to get sufficient charge. At this time of year all modern cars suffer with a low SOC. The ambient temperature is lower which reduces battery capacity. The days are darker and so headlights are on much more, and things like heated screens and heated seats get used more.

You need to charge the battery about every 5 weeks with a smart battery charger (this is normal). Make sure that you always connect the negative lead to the car chassis earth point and not to the battery negative. Connect the positive lead to the battery terminal and charge the battery for a minimum of 12 hours regardless of what the battery charger is indicating.

Maypole Smart Battery Charger:

https://www.amazon.co.uk/Maypole-7423A-Battery-Charger-Electronic/dp/B009A83P1E/ref=asc_df_B009A83P1E?

35 minutes ago, unofix said:

The 'health' of the battery is not the same as the 'State Of Charge' of the battery. It is quite possible to have a battery which is in good health but has a low state of charge.

In your case I suspect that the car is simply not being used enough and not being driven far enough each trip for the battery to get sufficient charge. At this time of year all modern cars suffer with a low SOC. The ambient temperature is lower which reduces battery capacity. The days are darker and so headlights are on much more, and things like heated screens and heated seats get used more.

You need to charge the battery about every 5 weeks with a smart battery charger (this is normal). Make sure that you always connect the negative lead to the car chassis earth point and not to the battery negative. Connect the positive lead to the battery terminal and charge the battery for a minimum of 12 hours regardless of what the battery charger is indicating.

Maypole Smart Battery Charger:

https://www.amazon.co.uk/Maypole-7423A-Battery-Charger-Electronic/dp/B009A83P1E/ref=asc_df_B009A83P1E?

Thanks for the explanation, yes I've never changed the battery and I've connected exactly as you say. It gets a 3 hour trip every fortnight and 25 min trip 2 times a week rest are short journeys.