A red blinking LED indicates that the battery is very low and that it needs to be recharged with the power adapter.
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If the speakers turns off after fully charging the battery then there is a problem with the battery and most probably it will need to be replaced.
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If after fully charging the battery, the speaker turns off when operating on the battery only, then there is a problem with the battery and most probably it will need to be replaced.
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Here’s a [https://www.youtube.com/watch?v=O0Kgk-KOBCQ|video] that may help with this
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Here’s a [link|https://www.youtube.com/watch?v=O0Kgk-KOBCQ|video] that may help with this