yes, that is the equalisation charge, somewhere around 0.35 kw, Steady light on the MG badge
Your car is still doing equalization process when logo is on.
I’m at 449v fully charged and when the temps last week were down at 0c-3c on 5/4/3 graticules (fuel gauge) I did see restricted boost of between 60-80% so MG restricted power but I can categorically say that since receiving the latest BMS at warmer temps 9c-10c I’m getting huge regen again at high states of charge something I lost in Sep BMS update plus I’m getting 100% boost at lower state of charge 2-3 graticules. My MG right now is performing the best it has since I bought the car on 1st Mar 20 with this latest update.
What you are witnessing is the same as most other owners “Post” new BMS update.
That is great that you are getting regen at high states of charge. This matches what is in the video podcast linked above. The cells are not charged to their full capacity as before, but the missing part is compensated by allowing the cells to discharge to a lower level. Thus you get the same range of charge (same capacity) but regen will work from a full charge as there is still capacity in the batteries. If you are lucky enough for the start of your journey to have downhill, then you can now charge the battery through regen to a higher state than just by plugging it in. Also means the car is safer in wintery conditions as the regen is like engine braking on an ICE car and will slow the vehicle without using the brakes.
How many miles on the GOM ?
The quoted WLTP 160+ but of course with my heavy foot it drops
Well... do we actually know what the lowest voltage was before & what it is now?It's good to know that there's no loss in range along with the lower voltage, it proves the update has actually lowered the bottom end voltage.
Don’t think we do, but at least you can benefit from Regen much sooner...
Yes, the range of charge is the same. The battery has the same capacity after the update but the battery as a whole will have a slightly lower voltage. Really, you don't care about the voltage of the battery. It is a bit like a fuel tank in that you don't get anything different whether the tank is full or nearly empty. The same with the battery. As long as it is above its minimum voltage, it is capable of providing the same power when fully charged or partly charged. It is the reservoir of fuel. What we would like to see, is that the BMS software allows the full amount of power to be available for the great proportion of the capacity of the battery. A petrol/diesel car does not restrict power during the last 10% of the fuel, but an electric car has that ability, so you can eek out the distance to the next charging point. What we have been seeing is a loss of power quite early in the discharge of the battery. Hopefully, the new BMS software has fixed this.
Booked in for 4th March - low range for the past 5 months so MG have asked dealer for tests to be done on main battery - had all software updates - they are thinking that another software update will be needed - will report back !!
I meant in relation to the power delivery. Comparing it to a fuel tank. Of course you care if it is full or empty, how much you can fit in it etc. But, I meant that how full it is, makes no difference to how much power is produced. (well until the last few percent)
I agree, it is a strange choice to show voltage. kWh would indeed make more sense. In order to meet the differing ranges of user knowledge, the straightforward number of bars, that mimics an ICE car is probably the easiest to understand. kWh could be an option to show for users that really want to know that information but I think the EV car manufacturers should invest some space in the manual to explain battery characteristics and what kWh mean if it is going to be shown. I remember the old Ford Cortina mkIII GT with dials showing oil temperature, crank case pressure etc. Did we need to know those things or were they just fun to know. Some users love that kind of information and will research what the significance of these values are. Anything that requires a knowledge of battery chemistry/characteristics, electrical theory and the like should probably be abstracted away from the user. It would be interesting to know the decision process that went into showing voltage.
