
This speaker has been in use for over 5 years. I bought it at Walmart. You can access the battery for replacement by simply removing the rubber boot and removing the screws. Then use three Panasonic 3.7V 2000Ah Li-ion batteries to correct the red-green pulsing light pattern, which means one or more batteries are defective. Find the three bay battery holder here on Revain and solder the wires in the pos and neg pattern using the info on the board to positive (+) (-). I have a second one, I just made it about a month ago. Note. If you use a non-Panasonic brand, you might come across companies that falsify battery specifications and do not guarantee the proper lifespan of your new battery pack. Read reviews first before buying 18650 from any other brand. Brands should be together with the Panasonic 👌 brand.

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