MacBook Pro Battery

The battery indicator lights are located along the left side of the mac computer. This allows you to quickly and easily verify the battery’s charge status while the computer remains attached and in place.

When you press the battery indicator light button, the corresponding green flashes (or pattern of flashes) presents either the current charge status or a diagnostic status.

Battery indicator light behavior
1) The first LED flashes for 5 seconds.
Description and instructions
(The battery has not yet been charged to what’s required for a single indicator light. Ensure the MagSafe adapter is properly connected.)

2) LEDs representing the current charge flash 5 times, then fade.
(The battery is charging, but does not have a full charge.)

3)  All LEDs flash 5 times.
(The battery needs to be replaced. Please schedule a service appointment with either an Apple Retail Store or an Apple Authorized Service Provider.)

4)  LEDs flash from left to right and back again 5 times.
(The battery is not installed, or is not recognized. Verify that the battery is installed correctly.)

Note: Once the MagSafe power charger is first connected to the computer, the MagSafe’s LED glows. An amber light indicates the battery is currently charging. A green light indicates the battery is fully charged, or not installed correctly in the computer.  So if the computer will not turn on then it is not fully charged and there’s a problem with your battery then take it to the Apple store.

Battery Indicator Lights for a 13 Inch Macbook Pro

I found below opinion from other apple forum. It might help you.

MA348LL/A and A1175 are the same thing. MA348LL/A is the Apple part number (aka order number), A1175 is the Model Number of the battery. So, if you order MA348LL/A and actually look at the printing on the battery, you’ll see Model A1175 on there.

If you’re referring to the batteries available on Amazon, check one of the reviews for the less expensive A1175 item:

When they say ‘original’ Apple laptop battery they mean that literally. The battery I received had a serial number ending in U7SB – one of the orginal MacBook Pro battery packs manufactured between February 2006 and May 2006. These batteries were found to be defective and are subject to an Apple product recall. Fortunately, with some persuasion, I was able to convince the local Apple store to exchange the battery pack for an updated one. The Apple battery recall website will not validate you for an exchange unless you have a MacBook Pro with an early serial number.

One of the risks of buying batteries from 3rd party vendors is getting old stock. For some things (e.g. a power adapter) that’s not much of an issue. But lithium-based batteries have a useful life of 400-500 charge cycles or 3-4 years – whichever comes first. Shelf life counts against that time – there’s a continuous chemical reaction occurring in the battery, and buildup of oxidation products – and the latter is actually worse if the battery is not being used. So, if you buy a battery that was made 2 years ago, you can expect to get 1-2 years of use from it (probably closer to 1), not 3-4.

My advice – get the more expensive one, or even pay the extra $10 and buy direct from Apple (it’s not necessarily $10 more, since Apple offers free shipping and the 3d party vendors on Amazon who charge less than Apple may charge for shipping).

Hope this helps…

“Apple’s standard for battery deterioration is that the battery should hold at least 80% of it’s maximum charge capacity after 300 cycles. Under normal circumstances, this means roughly 2 years. Granted, everyone has a different definition of normal usage but Apple usually won’t deal with a battery if it’s been through over 300 cycles or three years or age.”

“Your one-year warranty includes replacement coverage for a defective battery. You can extend your replacement coverage for a defective battery to three years from the date of your notebook purchase with the AppleCare Protection Plan. However, the AppleCare Protection Plan for notebook computers does not cover batteries that have failed or are exhibiting diminished capacity except when the failure or diminished capacity is the result of a manufacturing defect. Apple offers a battery replacement service for MacBook Air and all MacBook Pro notebooks with built-in batteries. You can purchase replacement batteries for late models of Apple notebooks directly from the Apple Store.”

“1-year on the battery that comes with a new laptop and 90 days on a replacement if not defective.”

“The warranty is one year only, after just having spoke to technical support who couldn’t replace my battery because my battery is over the one year mark at just under two years of age”

If you are lucky enough to own an Apple Macbook pro and you need a Macbook Pro Battery for your Macbook pro then you have the option to take your Macbook into an Apple store or shop online and try to find a replacement battery for your Macbook Pro.  There are different versions of the Macbook Pro making it a challenge to locate the correct replacement battery for your Macbook Pro.  We are going to try to help make your search for a new battery or replacement battery a breeze!

How do I replace the battery in my MacBook Pro?

17-inch MacBook Rechargeable Battery