Short version - I bought a new battery for my friend's late 2006 Macbook, because the old one is dead and would no longer even be recognized by the computer. I installed the new battery. It is recognized by the Macbook (in System Profiler > Power), and it is functional (battery LED test) but the battery status menu shows "Battery Is Not Charging" and "Power Source - Power Adapter". I have researched and tried several methods to fix the problem, with no luck. So, I need your help. ------------------------------------------ Detailed version System overview (detailed specs in images): 13" Late 2006 Macbook, Intel Core Duo 1.83 Ghz, A1181 (aka Macbook1,1), OS X 10.6.8 Snow Leopard, 2GB RAM, 128 GB SSD New battery (also see images): https://www.amazon.com/gp/product/B01H6P5L14/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1 The problem: The old battery for my friend's 2006 Macbook is totally dead. I bought a new battery online, which seems to be functional (LEDs on the back show 4/5 green) and is recognized by the computer in System Profiler (see images), but does not charge, as indicated by both the System Profiler under Power, and also in the battery status menu ("Battery Is Not Charging" and "Power Source - Power Adapter"). As soon as I unplug the Magsafe power adapter, the computer shuts down. So, it is simply not able to use the battery for power, nor does it charge. Charge stays constant at 69%. System profiler shows that the battery is new (1 cycle), condition is "Normal", and that its 69% charge matches up in terms of mAh (Charge remaining / Full charge capacity). What I've tried: - PRAM reset (restart with Command+Option+P+R) - SMC reset (power off, take out battery, unplug Magsafe adapter, press and hold power button 5 seconds, plug Magsafe adapter, reinstall battery, power on) ... also tried with 10 seconds and 15 seconds power button hold - SMC reset as described above, after unplugging battery and Magsafe from (and not using) the computer for an hour - Removing and reinstalling the battery while the computer is sleeping - Removing and reinstalling the battery while the computer is on - Something I found on YouTube: Shift + Ctrl + Option + Power (this key combo didn't really have any effect) None of my above measures has had any effect whatsoever. Please see the images for more details. Any help would be greatly appreciated. Thanks mucho !