Disassembled the main board and removed the controller…. not looking good; parts of large-ish silicon power transistors dropped out the end of the controller. Further inspection reveals a couple of capacitors with holes in… and yes that is electrolyte powder everywhere!
Good news: the StealthBus safety circuit works perfectly!
Bad news: I need a new controller 🙁
Started replacing the GBS supplied bolts with ‘ones that actually stay in place’. In case some else needs to change theirs they are: M4 x 0.7mm x 10mm. Buy ones with a 7mm hex head.
Cell #5 had been the bane of the pack for that last few weeks… Over temp/ under volt. All due bad contact on the terminal. Replaced with a 7mm hex bolt and torqued that down. Now it’s the happiest cell in the pack. Just 376 bolts to go – joy!
The WiFi based monitoring system I developed for the StealthBus is now an official option for the Lithiumate BMSs!
The design has been improved and it is now offered as a fully supported package!
Full house! All 4 chargers in use!
First charge!
Key to power!
New gauge fitted!
Now running in the StealthBus… I can use my iPhone to open web app and see all the vital statistics of the battery system. Using a Raspberry Pi as a WiFi hotspot, hosting a simple web server. A background task is polling the BMS and output javascript variables, which are polled by the browser and then rendered in the browser.
4 chargers! Just waiting for I al connections.
