MacBook Pro A1990 Battery not recognized repair

MacBook Pro A1990 Battery not recognized repair
Device	MacBook Pro A1990
Affects part(s)	Motherboard, battery
Needs equipment	multimeter, soldering iron, soldering station
Difficulty	◉◉◉◌ Hard
Type	Soldering, Micro-Soldering"Micro-Soldering" is not in the list (Soldering, Teardown, Part replacement, Cleaning, Software, BGA, General) of allowed values for the "Repair Guide type" property., Part replacement

This article is a stub. You can help Repair Wiki grow by expanding it

Problem description

MacBook A1990 not recognizing the connected battery

Example image (Figure 1) -- No image yet. Help expand this page by uploading it!

Symptoms

• MacBook not turning on.
• Battery not recognized/charging

Solution

• First, try a known good battery.
  • If it doesn't work, check the battery cable going to the board.
    • Sometimes there is corrosion here, sometimes the customer tore the bar on the connector off the connector.
• In some rare cases the SMC still is a factor in battery recognition on this board.