Hi I have a specialist looking at my battery however he would like a schematic of the wiring inside a EM 5.7 battery. I'm getting conflicting information on the exact makeup of the battery, has the battery 13 cells only, 13 cells with a 14th cell that controls the relay or 14 X 4V cells with the 1st cell also controlling the relay? This Battery has had a Neptune BMS fitted that although very clever it does keep on tripping the solenoid regardless off the multitude of settings and parameters I have tried to resolve the issue. I have decided to have a more basic BMS fitted but unfortunately the wiring is a bit hit and miss at the moment hence the request for a detailed schematic.

Have you asked Richard Kent (the aussie EM agent) yet?

We’re you able to resolve the issue ?

im having the same problem with basic stock BMS  (i was planning on switching to the speedict Neptune)

my bike is a 2014 EM 5.7 , The solenoid tripes out after 30-60 min and now wont hold at all , I bypassed the solenoid/contactor BMS and current transformer and it charges perfectly

13 liPo pouch cells in series bolted together 

 

Hi Jimbo, yes I have resolved my issues well about 99% resolved. My battery guy reconfigured the Neptune differently to the EM BMS so now the solenoid isnt as susceptible to tripping. The Neptune is a great BMS with lots of real time parameters to change on your phone or tablet when the battery is on. The Neptune also does a safer balanced charge so when a cell approaches the desired charge, say 54V it will stop balance then start again until all cells are the same. I can send you some pics if you wish I also have a vid on how it is wired up. My only issues now are: I have a dodgy No6 cell that charges quicker but also discharges quicker than the rest, therefore when the difference is a volt or two below the others the solenoid will start to trip usually after an hour or so of hard riding. Also the wiring harness to the neptune was kinked when installed so sometimes that will play up. I have a new harness on route and I already have a few spare cells so I will fix that in the new year. I have a EM epure Race arriving next week so my interest in the 5.7 might wain a little  

Hi Austini!

Need to replace my BMS.  See you did the Speeddict Neptune (15S?)  - Can you send those pics and vid on how it is wired up. 

 Cheers