Speaking of spares, by far the most likely thing to go out is the alternator. I absolutely would have a spare onboard for this trip. Even my Balmar - not a cheap alternator - needed a visit to the alternator shop. A4s are a worst-case for alternators, turning slower than usual makes them hotter than usual.
* I just put on an alternator temp sensor for this reason
I also might think about a cheaper standby BMS. You will have "spare cells" if you think about it, just make one string of 4 instead using 8 if one dies.
Last edited by joe_db; 01-07-2022 at 01:23 PM.
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