“When the built-in battery dies, can this speaker still be used via the external power source that otherwise charges the battery?”
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From JBL's deliberately evasive and vague answer one can only assume that you'll be stuck with garbage once the battery quits charging. Alas, we're happily filling land with garbage when batteries should be replaceable and speakers should go on for very long time.
Sorry, there was a problem. Please try again later.JBL Charge 4 has a built-in lithium-ion battery. The unit can be used even when it's plugged in, and it will not affect the battery. If ever the battery is full, lithium-ion has smart circuits, and the unit will automatically go into trickle charging. Unfortunately, we don't offer internal parts and battery replacements for our portable products. If you have more questions, please reach out to our Customer Support: https://www.jbl.com/support-contact.html
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