Battery Vehicle Society

If its been misused or not watered or left for a long time, I always water the batteries before doing the maint charge, You will get some weep through on the vent pipes but I think its worth it. Heres why. The idea of the maint charge is to get the cells to a temperature and charge condition where t...

From your layouts you dont have the early BMS that I was refering to but the later version. The early one has one board for monitoring the voltages and controlling the charger and a separate board that does the bleeding. This has no connection with the voltage monitoring circuit.

Grumpy-b

You could take voltage from lower front battery directly, but its a real pain to get to and personally I hate getting excessively dirty or wet or having to jack the van up.
A bit of maths is easier than taking the voltage directly.

Grumpy-b

To check the separate battery pack voltages. 1. Take the cover off the control unit and measure the pack voltage on the middle pair of large cables. Note it down 2. Behind the 12v battery take out the Fuse and Barre (French word) on the set of contacts away from the cables (ie in the middle) measure...

The only thing that a balancing BMS is doing is bleeding off power from cells to reduce their voltage. In doing so the overall power contained in the cells becomes unbalanced at the expense of having a spurious balance to the high charge voltage of the cells. Bottom balance and dont try to charge th...

I have now come across 3 early versions with the same problem. Having been left for a few days one or more (genarally two adjacent cells ie 1&2 3&4 5&6 etc) get bled down, and will go down to 0v if left long enough . On these vehicles they have two sets of leads to each cell, the later o...

The brake servo on the Evie is provided with its vacuum by a 12v electric pump mounted on the offside of the front battery box. There is a small rubber hose that connects to the servo. A number of cars have the pump coming on and off constantly. This is generally caused by a small leak in the pipe w...

An Evie owner who has now got through 5 MES heaters has just commented that it would have helped if he had been told he needed to check and top up the fluid. It aparently leaks or evaporates and when empty fails to work. So for those who dont do this, take the top off check the fluid and top it up w...

Many are covered by normal insurance companies, Co op was great for my Berlingo,Electrique it was on their vehicle list so available on line but they wouldnt do any form of modified vehicle, hence I moved when I insured by Electrique Multispace. Try the NFU, I used them for a few years a number of m...

Have you checked your charge lead. They do tend to internally break and if waggled will briefly work or stop working. First area of breakage is near to where the cable goes into the charge plug. With the lead off the car . Open the Marechal plug shutter and find the two pins that are live and neutra...