Blue SE or Gray CA cells? I think the CA's are a substantial improvement. Keegan at the US CALB warehouse is fairly responsive. Or if you bought them from one of the US resellers I'd hope they would go to bat for you.
Back on topic, I am putting mine in insulated boxes with heaters in them. Temperature controllers will turn the heat on if the cells are below 40F and disable the charger until the batteries are warmed up to at least 45F. The design right now calls for all of that to be powered by shore power. I'll be monitoring the temperature to see how they fare while parked. --Rick On 01/28/2014 05:28 PM, Cruisin wrote: > If the cold isn't enough to worry when using the CALB 180ah cells, early > failure is substantial with the CALB cells. I have 6 customers using 180's > and all have had failures of at least one cell in the first two years. All > use a BMS and a programmed Elcon, so I know the systems are designed right. > About half died while driving, BMS alerted and they shut it down. The others > started change in resistance values making it difficult to get a complete > charge, or early discharge alarm from the BMS. One died 1 day after a one > year warranty. No replacement even though CALB was told of a possible > problem early on. I don't want to alarm anybody, and I am sure some forum > junkie will jump in a say he has been using the cells forever without a > problem. Probably some have, but my experience is that most will have a > early failure. Recommendation, carry sufficient tools and HV and BMS cables > to be able to isolate the cell should experience this problem. Otherwise, > you will be stuck somewhere where you don't want to be. Been there and done. > By the way, don't expect CALB to do anything, even during a so called > warranty period. Support and service ended when you put them in your donor. > I hope I didn't hijack this thread, just wanted to pass on what I think is a > troublesome problem. _______________________________________________ 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)
