2009 MACBOOK PRO 13 POWER SUPPLY INSTALL
Since you've already ordered the battery, I wouldn't mess with anything else until you receive and install it. I think it is a charging LED, though, so if that is the case obviously it won't light up without a battery to charge. It has been long enough that I don't remember if the power adapter LED stayed off or not in that case. It is a wonder it didn't burn his house down. That one came to me because the battery had swelled to the point where the touch pad stopped working, requiring an emergency "battery-ectomy".
60W MagSafe Power Adapter with cable management system. Each core has its own 256 KB Level 2 (L2) cache, and each quad-core CPU shares an 8 GB Level 3 (元) cache.
2009 MACBOOK PRO 13 POWER SUPPLY MAC
It’s been 14 months since Apple introduced the 2008 Mac Pro, and the 2009 Mac Pro is a big step forward: every configuration uses quad-core Intel Xeon Nehalem CPUs for even more power. Seems like it required an 85 watt adapter, and his was outputting less than that. Built-in 60-watt-hour lithium-polymer battery. Mac Pro (Early 2009) LEM Staff - 2009.03.03. The laptop would boot because the battery still had enough juice to boost it off, but the charger alone wasn't producing enough wattage to boot it standalone. The MacBook Pro (13-inch, Mid 2009) shipped in two configurations, priced 100 below the previous models, despite the inclusion of more pro-level features: 2.26 GHz/2 GB RAM/160 GB HD/1199, 2.53 GHz/4 GB RAM/250 GB HD/1499. Turns out on that one the power adapter also wasn't up to spec. The MacBook Pro (13-inch, Mid 2009) also included the integrated battery introduced with the MacBook Pro (17-inch, Early 2009).
I haven't worked on a lot of them (not an Apple person myself), but I did look at them on occasion and did have one that wouldn't boot without the battery installed no matter what we tried (and we spent hours trying everything). Yeah, it is sometimes hard to get one running without the battery installed. 60W For Apple MacBook Pro 13' AC Power Adapter Charger A1344 A1184 A1278 A1330.
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