Battery change link is for a different speaker than described in this article

first color bose soundlink II from amazon: four charges and dead.

second color bose sounklink II from amazon: a dozen charges and dead

I review phone chargers and related cables as a hobby on amazon. I know these are good supplies.

third bluetooth speaker will not be Bose.

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For extra fun: both bose and jbl license the same connect-2 protocol. Bose and JBL will not talk to each other.