Introduction
If your Contixo V9 (model number V9X) is failing to hold a charge and it definitely isn't an issue with the charger, you can troubleshoot it here; you may need to replace the battery to fix it. This guide will tell you how to do this. You will need two blue iFixit opening tools and a fine-tipped soldering iron (see this guide for information on soldering and desoldering connections); you may also want to use a plastic spudger, but this is optional (the blue opening tools would work too). Please consider using an anti-static wrist strap to protect against electrical charges while working with the battery (see this guide for information on how to use these items), and be sure to familiarize yourself with the signs and dangers of a swollen battery.
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Begin by separating the screen and frame of the device by inserting two prying tools and applying enough pressure until the screen "pops" apart.
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Touch the pre-heated soldering tool to the red and black wire connection points to melt the solder and remove the battery.
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To reassemble your device, follow these instructions in reverse order.
