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Bose doesn't sell batteries for the NC700 and doesn't seem to make replacements. I couldn't even find a Chinese equivalent. In this guide, I describe the process of replacing the original battery with a universal battery.
Please do not try this again unless you have a basic knowledge of electronics and have never soldered.
Neye ihtiyacın var
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Use a plastic card to remove the ear pad from the left cup. Slide the card into the slot and make a rotating motion.
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Remove the fabric cover and remove the four screws using a Torx TR6 screwdriver.
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Carefully disconnect the flex cable.
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Cut the three battery cables. Cut one wire at a time to avoid short circuits!
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The battery is glued to the case. Use a knife to carefully cut off the battery. Take care not to damage the battery!
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Be sure to clean any adhesive residue from the case.
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Solder the new battery to the old controller. Observe the polarity!
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Measure the voltage at the controller pins. You will most likely get 0 volts. It is necessary to wake up the controller.
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Use any battery controller. Solder the battery to the battery terminals on the controller.
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Charge the battery through the external controller for 5-10 minutes.
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Disconnect the charging cable and verify that the battery is energized. Charge the battery to 4 volts (if required).
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Unsolder the external controller.
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Solder the battery. Use heat shrink tubing or duct tape to insulate the soldering area.
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Your headphones will turn on when you solder the battery. Turn off the headphones.
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Place the battery in the bottom of the cup.
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To reassemble the unit, follow the instructions in reverse order.
To reassemble the unit, follow the instructions in reverse order.
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Thank you, very useful and money saving
Happy to help.
Cool! how did you knew the battery was the issue? Did you have the red/white blinking LED issue on your headphones? I got that issue since the end of last year, and am not quite sure if it is a software or hardware related issue. Would love to fix it but indeed couldnt find any official replacement batteries or anything.
Yeah, I had the same problem. I think there's a bug in these headphones. If the battery is very low, the headphones think there is no battery and don't charge it.
