I am a first time user. Thanks in advance for your patience and guidance regarding my question. My tablet battery, in need of replacement, has 3 wires. The third wire (white one) is needed for charging the unit. The other two are obviously positive and negative connections. I have been able to locate tablet batteries on line with similar specs and physical size, but they come two wire leads only. Does anyone know if the existing third charging wire is to be soldered to a connection on the replacement battery?... or must I continue to search for a 3-wired replacement? ADDITIONAL INFO: Nextbook 8p 12, 2years old, 20 minute battery life, out of warranty, easy access to battery and board. I confirmed the purpose of the third wire by snipping it. The unit still worked on AC power but would not charge The wire has since been re-soldered and now charges. A full 100% charge lasts 20 minutes.