I don't know if this will help anyone, but I was having trouble with my Soundlink Mini (version 1) running for anywhere between 5 and 45 minutes before suddenly turning off and not being able to turn back on for an indeterminate amount of time. No amount of product resetting or letting the battery die and recharge worked, but after I followed this guide and simply took the battery out and put it back in, my speaker is working perfectly now.
I guess this is the equivalent of unplugging it and plugging it back in.
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