Introduction
Your favorite tunes suddenly silenced? That telltale flicker and fade from your JBL Pulse 4 likely signals a dying battery. Before relegating it to the electronics graveyard, consider a simple battery replacement. This guide will walk you through the process, step-by-step, enabling you to revive your speaker and get the music flowing again. With a few basic tools and a little patience, you can extend the life of your device and save yourself the cost of a replacement.
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Power off the device before doing any repairs.
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Hold the power button for 3+ seconds to power down the device.
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Remove each rubber end cap using a plastic pry tool.
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Go around each end of the speaker slowly popping up a small section of the rubber cap until there is a gap on all sides.
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Remove the top by hand.
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Remove the charging port cover using a plastic pry tool.
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Remove the two 12.7 mm Phillips #1 screws.
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Remove the charging port housing from the casing.
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Disconnect the charging port connector by pulling the connector away from the port.
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Disconnect the battery level indicator light by pulling the wire away from the lights.
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Remove the six 8 mm Phillips #1 screws from the end of the speaker with the grill that says "JBL."
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Remove the plastic piece where the 6 screws came out of.
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Flip the speaker to the other end.
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Use a pry tool to pry between the casing of the speaker and the internals.
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Go around the entirety of this end of the speaker slowly prying apart the two pieces.
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The casing is now fully detached from the internal components.
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You can now replace the outer casing of the speaker.
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Place the speaker on the table with the button board side down.
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Remove the three black 5 mm screws using a Phillips #1 screwdriver.
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Remove the white casing by pulling it away from the button board.
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Remove the four black 5 mm screws using a Phillips #1 screwdriver.
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Remove the white plastic piece that is held in place by the screws.
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Feed the wire out of the central housing unit.
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Pull the battery out of the central housing unit.
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To reassemble your device, follow these instructions in reverse order.
