if you ever wonder what is the REAL range of 100%-0% in the SR ... you'll be surprised by this experiment.

[Corindikev]

Yes I think the LFP chemistry characteristic is somewhat flat. 100% or 0% the power output is the same. I read that somewhere.
Yes the mid indikator was green at 100% I think it turned orange in the middle and then <20%soc it was red.

My MG4 Essence 64 (Australia) battery charge indicator is always green, well at least down to 9% as I have never driven it at lower SOC than this

 

[Rolfe]

I did not find any official record of battery type.
I did some research. I understood my battery should last 20-30 years with weekly or fortnightly charging whatever the battery type.

It's true one can get too obsessive about battery charging routines, as you probably won't go terribly wrong whatever you do. But watch this for information.

 

[Waterstoney]

It's true one can get too obsessive about battery charging routines, as you probably won't go terribly wrong whatever you do. But watch this for information.

Thank for the video about battery. I shall keep my LR battery (possibly MNC type) with 50% to 80% SOC for prolong battery life.

Britain had coldest November since 2010. It was frosty morning in London in last two days. I was amazed that my ZS LR could still achieve 3.8 to 4.1 miles/kWh in 0°C to 3°C for 10 miles trips. I needed to use iSmart with A/C remote control for defrost in morning and minimum heating/AC for clearing windscreen. I bought a Halfords top cover (large size is still a bit small for ZS) for reducing defrost effort.

 

[fshuk1]

I watched the whole video now and really enjoyed it. You were having such fun! I really like that interior, much brighter than my car, but of course your one is Trophy trim.

The distance is even more impressive considering you had four - er- chunky - guys in the car, and a boot full of luggage. The car was carrying a lot of weight. Imagine how much further it could have gone if you'd got a slim girl to drive it, with no passengers or luggage!

I saw the SoC display change colour, it seems to be behaving correctly in your car. In all the cars in Britain (at least) the display stays green until it gets to 5%, then goes amber. Nobody has ever seen red. Except, occasionally, the display turns amber at any state of charge, at random (I have seen it at 100%), then flips back to green quite quickly.

I'm trying to find out what % figures it's supposed to change at. You think 50% and 20%? Someone with an MG5 (I think) said 50% and 10%, as far as I remember. Just another annoying bug in the software it would cost them nothing to fix. But people in Britain have to complain about it.

 

[Rolfe]

Well, that's obviously spurious. I've seen it go amber at around 10% to 12% as if it meant it though.

 

[T1 Terry]

Interesting that the charger showed 53.46kwh recharging a completely drained battery. There would have been a min of 10% inefficiency, that brings it back to 48kwh with every last bit drained out, but no clue as to how long it spent balancing and that is when the biggest inefficiency occurs. All the time the charger is powered, even if it isn't charging, it uses power, my MG4 51 can take up to 5 hrs to go from trickle charging to fully charged. I have had other times when the scene said 100%, the charger had shut off, but 30kms were missing from the available range, but they return if I recharge when at 80% SOC rather than 15% SOC.

I was a bit jaw dropped when I read they never exceeded 20% load when accelerating, how would you do that, my 51 wants 35% just to move on flat ground, I'd get charged with obstruction or loitering is I tried to creep off the mark at 20% load or less

I think I'm doing well with 18.4kwh/100kms, but then, it does get driven at a tad more than 20% load
One day, when I have figured out how to reset the other myriad of things I'd like to sort, like that beep and visual warning to slow down @ 60km/h (I can find where the setting is, but not how to adjust it) I want to see how the CUSTOM drive function can be set up to see if the max power % can be limited as long as full throttle isn't applied ..... I'd still want to be able to get out of the way if a truck looks like it's going to put a tyre print across my forehead .......

T1 Terry

 

[Buster72]

Many thanks for posting this, which I found highly interesting.
People can argue about the finer points. But, using first principles, it was a very informative and reassuring experiment.
We all know that the OAT has a marked effect on range.
The only question I would have was what were the tyre pressures.
Again, we all know that OAT has an effect on tyre pressures, as do these on rolling resistance.

So do you know what they were?

Interesting that the charger showed 53.46kwh recharging a completely drained battery. There would have been a min of 10% inefficiency, that brings it back to 48kwh with every last bit drained out, but no clue as to how long it spent balancing and that is when the biggest inefficiency occurs. All the time the charger is powered, even if it isn't charging, it uses power, my MG4 51 can take up to 5 hrs to go from trickle charging to fully charged. I have had other times when the scene said 100%, the charger had shut off, but 30kms were missing from the available range, but they return if I recharge when at 80% SOC rather than 15% SOC.

I was a bit jaw dropped when I read they never exceeded 20% load when accelerating, how would you do that, my 51 wants 35% just to move on flat ground, I'd get charged with obstruction or loitering is I tried to creep off the mark at 20% load or less

I think I'm doing well with 18.4kwh/100kms, but then, it does get driven at a tad more than 20% load
One day, when I have figured out how to reset the other myriad of things I'd like to sort, like that beep and visual warning to slow down @ 60km/h (I can find where the setting is, but not how to adjust it) I want to see how the CUSTOM drive function can be set up to see if the max power % can be limited as long as full throttle isn't applied ..... I'd still want to be able to get out of the way if a truck looks like it's going to put a tyre print across my forehead .......

T1 Terry

I had assumed that the 20% load was not the instantaneous load during acceleration.
Was that right?

 

[hojnikb]

Interesting that the charger showed 53.46kwh recharging a completely drained battery. There would have been a min of 10% inefficiency, that brings it back to 48kwh with every last bit drained out, but no clue as to how long it spent balancing and that is when the biggest inefficiency occurs. All the time the charger is powered, even if it isn't charging, it uses power, my MG4 51 can take up to 5 hrs to go from trickle charging to fully charged. I have had other times when the scene said 100%, the charger had shut off, but 30kms were missing from the available range, but they return if I recharge when at 80% SOC rather than 15% SOC.

I was a bit jaw dropped when I read they never exceeded 20% load when accelerating, how would you do that, my 51 wants 35% just to move on flat ground, I'd get charged with obstruction or loitering is I tried to creep off the mark at 20% load or less

I think I'm doing well with 18.4kwh/100kms, but then, it does get driven at a tad more than 20% load
One day, when I have figured out how to reset the other myriad of things I'd like to sort, like that beep and visual warning to slow down @ 60km/h (I can find where the setting is, but not how to adjust it) I want to see how the CUSTOM drive function can be set up to see if the max power % can be limited as long as full throttle isn't applied ..... I'd still want to be able to get out of the way if a truck looks like it's going to put a tyre print across my forehead .......

T1 Terry

10% inefficiency at DCFS is a lot.. I'd say it's closer to 5% (unless it spend a lot of time balacing at the DC charger). At 5%, the math checks out.

Many thanks for posting this, which I found highly interesting.
People can argue about the finer points. But, using first principles, it was a very informative and reassuring experiment.
We all know that the OAT has a marked effect on range.
The only question I would have was what were the tyre pressures.
Again, we all know that OAT has an effect on tyre pressures, as do these on rolling resistance.

So do you know what they were?

Yeah, tires/pressure can affect consumption quite a lot, especially at lower speeds, where aero doesn't affect things as much (and MG4 has pretty poor aero).

 

[siteguru]

(and MG4 has pretty poor aero).

0.279Cd apparently. 0.263 for the ID3, 0.239 for the Tesla M3, 0.219 for the BYD Seal, and 0.29 for the Atto 3.

 

[hojnikb]

0.279Cd apparently. 0.263 for the ID3, 0.239 for the Tesla M3, 0.219 for the BYD Seal, and 0.29 for the Atto 3.

It's CdA what matters... You can have low Cd, but still lots of frontal area and as such poor aero performance.