4kwh Enginer GenIII PHEV in UK

Just to clarify, the 3.2 doesn't do -any- balancing, either top balance or bottom balance. This is great if your pack is brand new or already perfectly balanced, but if you've been using a v3.1 and have an unbalanced pack, you will need to balance manually when you get the 3.2.

 

Ok, to clarify.

None of the BMS16D series does top balancing, at all, ever, they only bottom balance. the V3.2 has balancing switched off by default, because the balancing function (at least on V3.1) doesn't work properly. It reads the wrong (too low) voltage on C15 and C16, so whenever you are using the kit it adds balance charge to them. this makes them go significantly higher than the other cells, and you end up with reduced capacity.

V3.2 upgrade is free, but you must pay shipping. It's useless if your pack is already out of balance. That's why i decided to buy a miniBMS to do top balancing, to bring my pack back in line and keep it there. it's working great.
If you swap the L and R packs C15 and 16 become C7 and 8. It now reads their voltage correctly (they are too high) but can't do anything about that because it has no top balancing. the new C15 and 16 it now reads low, and starts adding a balance charge. it will also try and add a balance charge to C1-6 and C9-14. Eventually your new C15 and 16 will be too high, and reduce capacity again. Now you have 4 over charged cells and can't do anything about it.

 

Use a 3.2 ohm resistor, put it across the pins for C15. Each hour it is connected you will be removing 1 amp hour from C15. In my case the 16D had made C15 about 20amphours higher than the others.

It's extremely difficult to tell if you have got it right, because the voltage doesn't tell you much about SOC. That's why i got a miniBMS to take care of the imbalance for me (it's done a great job, i got 50 miles out of my pack today!) and then keep it in check.

 

I don't know precisely. The Enginer charger has a very low power factor, and i assume a very dirty waveform. That makes it difficult to accurately measure. I have two different power meters, one reporting about 8kwh per charge, the other about 1.5. I'm pretty sure they are both wrong! What i can say for sure is that the charge cycle is lasting over five hours, so there is plenty going in.

 

So i filled up on March 29th, and finally decided to fill up again today, 790 miles later, with the last pip blinking. This was my first complete tank with no system failures/downtime and the result was 99.7MPG. Good, but i think i can do better. Image attached for any doubters out there...

 

Haha cheers guys! I am suffering a kind of "range anxiety" with it, i don't want to drive anywhere that's futher than 23 miles away now! It also wasn't quite a whole tank, i only got in 37.something litres, so could easily have gone another 100 miles, maybe 150.

and grumpy, we tried the diesel (2l mondeo) and the GM prodcut (2.2 vectra) and got 41 and 36 mpg respectively....

 

Haha, no, nothing happens
It actually went in for it's 30k service with the display saying 99.9 and i was tempted to ask them to check what was wrong with the gauge!

Current tank has over 200 miles on it already, and stuck on 99.9, hoping it will stay there so i can officially join the 100mpg club.