I just finished installing 66- 60ah Calb batteries in a Mini Cooper. When I tested the car, I got the alarm right away from the mini BM headboard. No lights on the mini BMS modules, so no low battery cells, but the alarm sounded every time the gas pedal was pushed. I started trouble shooting, taking out different parts of the equation. When I cut out the front battery pack I did not get any alarm. Thinking that it must be something in the front pack I spent more time than I care to admit doing things to the front pack, trying to get the alarm to stop. At one point I ran wires from the back to the front coming out the front window and still got an alarm, even when I didn't have the modulus hooked up to the wire and had the wires connected together. It turned out that the wires going forward had to pass over the DC DC converter and because of the tight position were laying right on the DC to DC converter.
Rerouting the wires away from the DC to DC converter solve the problem. The mini BMS alarm wires work like a large set of Christmas tree lights. If anyone goes out it breaks the circuit and sets off the alarm. The output from the headboard to the chain of BMS battery boards is about 100 microamps . Interesting this happened on April fools day. I remember a few years back someone posting on April fools day joke about a new screen that was so fine it would strip the hydrogen atoms off of the water molecules so as to make hydrogen to run fuel cells from water.... -- Steve Clunn Merging the best of the past with the best of the future. www.Greenshedconversions.com _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
