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MacBook Shows X sign battery, but works off battery

Hello everybody my first post here. here is the story. i got a Macbook mid 2009 A1278 with the 820-2530 Motherboard, i bought it second hand with short battery life, i bought a knock off replacement from a local store. worked but the battery dies unexpected always on 40-50% but kept reading the battery (percent and if there is one), want back to the store and they asked also the computer to see if it really was a battery issue, turned out it was. After a day i called them back and i asked if since the issue is confirmed can i have my macbook back since i was using it for xcode on college and wait till a new high quality replacement battery arrived, they said yes, i got my mac back BUT it was showing an X icon on the battery, no green LED indicator on the side, nothing. excpept when i unplugged the charger(with green light never gets orange) macbook was still getting power even though it reported it has no battery, i was confused plus the LED on side didnt work. so i got a call from the store saying the new battery arrived and i should go there with my laptop to install it. i went and upon plugging the battery i got green light on the charger, no green battery LED status, with the new battery.i boot it up, removed the charger and the mac reported no battery and a green light. the battery was good since they had an A1278 next to me for testing the issue. so:

TLDR

Macbook Shows x sign on the battery, doesnt charge/turn orange, no green led battery LED activity, BUT if it turns on via charger can use battery power with “no battery installed” NVRAM/PRAM and SMC reset was performed multiple times with no changes

(i just hope this is not an SMC issue)

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Lets get a better view of things install this gem of an app CoconutBattery anapest a snapshot of the main window here for us to see 在已经存在的问题里加入图片

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1个回答

uninstall the battery driver

Update (03/14/2019)

ok I believe I know what the problem is, I believe you may have a blown fuse that is for the battery but the fuse for the charger is fine , I had something like this happen to me before on my nintendo dsi XL

I fixed the problem by removing the fuses and creating a solder bridge, so I will look up the fuse locations for this laptop and ill be right back with you

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@fegelein3290 - There is no drivers for batteries in this system so I'm not sure where you are heading here.

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LOL , I just read the title

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@fegelein3290 - Stick with the same series when you research.

Think it this way ... A jet engine is not the same as a car engine is it? Both need a battery but the design and requirements are very different!

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oops sorry I saw something like this with your same model but his one was another link sorry

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Dimitris Serp 将永远感激不已
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