New replacement battery for MacBook Pro not recognised
I replaced my Macbook's battery (after following the guide from iFixit) and the computer did not recognise it.
The only way for me to turn it on was to plug in the MagSafe connecter (which only showed the green light).
I then asumed it was a problem with the replacement battery (from eBay) and put back the original battery.
For some strange reason, the original battery wasn't recognised either!
I've reset the PRAM and SMC, but still to no avail!
I would greatly appreciate your help!
New batteries need to be charged before use. New batteries are known to fail straight out of the box on occasion (especially cheap Chinese ones) . Contact your vendor about the battery. In the mean time try removing all power (main and battery) for a full 24 hours before reconnecting any power might solve your problem. Start by connecting the battery but not powering up. You do not need to completely button down the top case, but put a few screws in tight enough that the ribbon cable will stay connected. Attach the main and see if you get a red (charging) light. Let the battery completely charge before attempting to boot.
If this answer is acceptable please remember to return and mark it.
It being Winter time many peoples homes don't have enough moisture in the air to dampen down the static charge you get from walking around a carpeted floor or even your legs and arms rubbing in your clothes. Even in the summer when you have A/C running you can have a static problem.
So during the winter months (or anywhere were its dry) you must control static by using proper ESD practices. Use anti-static mat which is grounded correctly to work on your gear and wearing a anti-static wrist strap that is connected to the mat so everything is fully discharged static-wise.
The other concern here is using the correct tools when working on powered equipment and removing battery packs. You need to use non-conductive pry tools (as an example) when disconnecting the battery power leads and using great caution with your screwdriver when removing screws internally when the battery is connected. If don't you could damage something.
Soft tip prying tools for DIY electronics repair. Use to open your iPod, iPhone, or any other sensitive mobile electronic devices. The soft plastic won't scratch your device, but the strong tip will easily pry it open. It's the essential tool for opening — 50+ available at 2.95 each.
Having the same problem. happened after installing new ram, that worked fine, downgraded the ram again did`t change, bought new battery (tested the battery it works fine in other macbook). Tried everything possible. reseted it 500 times.... Cant`t reinstall the latest smc firmware, because already correctly installed. Can`t downgrade to former firmware. There`s no firmware restoration cd for mac book pro 8.1, the cd that came with the comp (old soft) does`t appear do nothing for that.
What else can I do?