Recent content by Data

Not quite sure that you have quite a full grasp of EV batteries Mickey. No disrespect intended. However, in response to your question relating to how good long battery life is achieved, I refer you to my earlier post. It's simple.

Cell voltages determine state of charge. I think you are going wrong because you are assuming that balancing brings all cells up to the same level. It doesn't always, even though that is the aim it isn't possible when some of the cells have started degrading. Cells degrade, charge & discharge...

That's perfectly correct Everest. Good info.

You're not wrong! 😂

Mickey, you are over complicating this. doubledroz has already stated he has been unable to carry out an equalisation charge on his 3yr old ZS with an LFP battery pack. So this is a case in point where not doing an equalisation for whatever reason causes premature battery degradation. His SOH...

Hi Mickey, no it's not concerning. A proper full equalisation to 100% doesn't harm the battery. Even NMC is fine with this, they are not fragile batteries. What harms the battery is charging it to 100% then leaving it standing for long periods at that high charge state. Not doing regular full...

Interestingly, I did a full equalisation last night. Unfortunately mine didn't equalise either. I've realised I inadvertently did a short "boost" test charge of 2 minutes with a SOC at 17% then I stopped the charge. That killed the BMS programming for the equalisation charge. You mustn't...

Mickey, as per the MG manual (page 9), "battery equalisation assists in extending the battery service life". It maintains range also. If you don't do this often enough or at all your battery will degrade more quickly. It's proven, it's well known. The degradation becomes permanent as time goes...

All manufacturers make the upper & lower buffers available to the BMS. This normally happens only during the equalisation/balance charge. That is where all battery cells are balanced with, in effect, excess energy above 100%. This buffer must also be accessed to prevent premature degradation of...

Repeating the balance charge again quite soon after running the battery down to just below the 'low battery' warning may further improve your SOH figure. I've seen on a Tesla a 2% SOH improvement after 3 consecutive balance charges. A Tesla displays the individual battery cell voltages...

Bear in mind all of our batteries are behaving as they should. There is no seasonal adjustment, it appears just a small effect on results from temperature differences. SOH isn't affected by temperature in quite the same way as SOC/Range but it does have a small, sometimes very small influence as...

Speak to MG. You can do this through the MG app. Explain you are having difficulty getting a dealer to do it. They will guide you through what to do & may contact a dealer on your behalf. They tend to be a bit slow getting back to you but they will eventually get to you.

It's the same on our E-Niros & even the Leaf. It's also so very dependant on whether someone has balanced the battery at the point the SOH is checked. Since all car batteries are affected by the same variables I doubt MG are doing anything differently to other manufacturers.

There are always losses. You never get the exact amount of energy showing on your Ohme charge box going into the actual car. That isn't possible. Doesn't matter what make of car or charger. Our E-Niro shows exactly the same as our ZS EV. We get 7.2 kws showing on our Zappi charger but around...

Hello Mick, yes the time period between the two readings was 3 days. I recorded 100% SOH an hour after a full equalisation/balance charge in near freezing conditions. Three days later at 39% SOC & near freezing conditions my SOH was showing as 99.4%. Hardly any difference but as batteries age &...