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Anker Soundcore Boost (A3145) replacement battery replacement
MaximusVII and 2 other contributors
Last updated on Sep 2, 2026
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Introduction
Go to step 1 ↓This guide shows the steps for "Anker Soundcore Boost (A3145) replacement battery replacement."
What you need
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First, remove the bottom of the box from the side with the charging ports. It is secured by four clips on each side and fixed with double-sided adhesive tape. You can remove it by hand, optionally using a plastic card or plastic opening tool.
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Underneath the base plate, there is a plate that is secured with 8 screws.
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Caution! The replacement battery is attached to this plate and connected to the motherboard via a short cable, so only open it carefully.
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Disconnect the replacement battery connector from the motherboard.
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Then, unscrew the two screws on the right and left of the replacement battery pack and remove the replacement battery pack from the plate.
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Now the replacement batteries must be removed from the housing. Again, be CAREFUL here! The cable is a little difficult to thread through here.
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And you're done; for those replacing the whole replacement battery, simply reinstall the new replacement battery in reverse order. I am rebuilding the battery pack from two 18650 replacement batteries:
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If you want to repopulate the battery pack with new replacement batteries instead of replacing the entire battery pack, you can build your own pack using two 18650 replacement batteries.
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After you have glued the two cells with the cables into a pack, place the two 18650 replacement batteries back onto the protection board and align the connection tabs as shown in the photos.
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Follow the steps in reverse order to reassemble your device.
