Macbook Pro New Battery Draining Very Fast?

[Bazzy]

Hi All,

Intel 2015 15: RMBP /Monterey 12.7.4

I replaced the original battery with what looked like an exact identical one as the original Apple one in the laptop in terms of all the markings/logo's etc & bought from a reputable computer seller on ebay.

I installed it about roughly a year & a half ago IIRC. After installing, I did the battery calibration as per Apples instruction. I was working from home mainly so did not have to rely on battery power most of the time. Now I am having to use it more mobile but for some strange reason, when on battery power alone, despite being at 100%, it runs out real fast - probably within 15-20mins.

The battery shows as 69 cycles & after watching a YT video on how to correctly determine battery health, I used the formula:

Battery Cycles (69) x 20 = 1380 divided by max battery cycle count (of 1000) = 1.38% I should therefore have a battery health of 98.62% which implies it should run on battery power for a good few hours & not just 15-20mins.

I really do not know what is going on & am dearly hoping someone can please kindly help me resolve this so the battery lasts as would be expected.

I am a novice on tech stuff so have attached as many images relating to the battery as I am abke below:

Many Kind Thanks!
Bazzy!

 

[MacCheetah3]

I installed it about roughly a year & a half ago IIRC. [...] I was working from home mainly so did not have to rely on battery power most of the time.

… And the fifth screenshot are the most telling.

View attachment 2499861

Even though four years isn’t absolutely detrimental for battery cells, it can be.

Understanding Battery Shelf Life - News about Energy Storage, Batteries, Climate Change and the Environment

Battery shelf life is the length of time a battery can remains in storage without losing its capacity.Even when not in use, batteries age. The battery’s aging is generally affected by three factors: the active chemicals present in the cells, the storage temperature and the length of time it...

blog.upsbatterycenter.com

Why do Batteries Expire? - News about Energy Storage, Batteries, Climate Change and the Environment

Batteries power everything from flashlights to cars but they don’t last forever, even rechargeable ones. Discharge and recharge cycles alter the structure of lithium materials. The repeated chemical reaction inside the battery can leave dissolved materials in the cathode or the anode forming...

blog.upsbatterycenter.com

[A] Battery’s death starts the moment they leave the factory which is irreversible and unavoidable. Lithium-ion batteries’ lifespan is less than two years. It can die even when rarely used or mildly charged. They degrade much faster when hot, and they die quickly when they’re left fully charged.

Batteries - Maximizing Performance

Maximize the life and lifespan of the rechargeable lithium-ion batteries in your MacBook, iPod, iPhone, and iPad.

www.apple.com

Store it half-charged when you store it long term.​

If you want to store your device long term, two key factors will affect the overall health of your battery: the environmental temperature and the percentage of charge on the battery when it’s powered down for storage. Therefore, we recommend the following:

• Do not fully charge or fully discharge your device’s battery — charge it to around 50%. If you store a device when its battery is fully discharged, the battery could fall into a deep discharge state, which renders it incapable of holding a charge. Conversely, if you store it fully charged for an extended period of time, the battery may lose some capacity, leading to shorter battery life.
• Power down the device to avoid additional battery use.
• Place your device in a cool, moisture-free environment that’s less than 90° F (32° C).
• If you plan to store your device for longer than six months, charge it to 50% every six months.

Depending on how long you store your device, it may be in a low-battery state when you remove it from long-term storage. After it’s removed from storage, it may require 20 minutes of charging with the original adapter before you can use it.

Basically, it’s best to routinely ‘exercise’ a battery, even if the ‘workout’ is light.

I still have an iPhone X with original battery. Even though I don’t regularly/frequently use it, I leave the device ‘on’ and (re)charge it about every week. Similar to my MBP. It’s an extra, mainly for travel instances. The (original) battery is at ~97% health (with 79 cycles, IIRC). In mostly standby state (not shut down) with occasional software updating and other sparse/sporadic usage, a full charge lasts for a month or more.

Anyway… Foremost, at this point, I recommend another (re)calibration, and discover if macOS (System Information) is closer to alignment with coconutBattery. Honestly, I expect macOS will suggest battery service.

 

[Bazzy]

… And the fifth screenshot are the most telling.

Even though four years isn’t absolutely detrimental for battery cells, it can be.

Understanding Battery Shelf Life - News about Energy Storage, Batteries, Climate Change and the Environment

Battery shelf life is the length of time a battery can remains in storage without losing its capacity.Even when not in use, batteries age. The battery’s aging is generally affected by three factors: the active chemicals present in the cells, the storage temperature and the length of time it...

blog.upsbatterycenter.com

Why do Batteries Expire? - News about Energy Storage, Batteries, Climate Change and the Environment

Batteries power everything from flashlights to cars but they don’t last forever, even rechargeable ones. Discharge and recharge cycles alter the structure of lithium materials. The repeated chemical reaction inside the battery can leave dissolved materials in the cathode or the anode forming...

blog.upsbatterycenter.com

Batteries - Maximizing Performance

Maximize the life and lifespan of the rechargeable lithium-ion batteries in your MacBook, iPod, iPhone, and iPad.

www.apple.com

Basically, it’s best to routinely ‘exercise’ a battery, even if the ‘workout’ is light.

I still have an iPhone X with original battery. Even though I don’t regularly/frequently use it, I leave the device ‘on’ and (re)charge it about every week. Similar to my MBP. It’s an extra, mainly for travel instances. The (original) battery is at ~97% health (with 79 cycles, IIRC). In mostly standby state (not shut down) with occasional software updating and other sparse/sporadic usage, a full charge lasts for a month or more.

Anyway… Foremost, at this point, I recommend another (re)calibration, and discover if macOS (System Information) is closer to alignment with coconutBattery. Honestly, I expect macOS will suggest battery service.

Hi,

Can you kindly tell me what exactly in the fifth screen-shot is most telling please? I am also confused as Apple System Info says battery condition is "Normal"?

Thanks

 

[MacCheetah3]

Can you kindly tell me what exactly in the fifth screen-shot is most telling please?

Your screenshot shows the battery is more than four years old. If you purchased and installed the battery about a year-and-a-half ago, that equates to about two-and-a-half years on the shelf. Again, both of these facts aren’t guaranteed to be a problem, although, they aren’t ideal. Then you note for a year or so you used your MacBook as a desktop, presumably (almost) always plugged in, connected to a charger. If optimized charging was working correctly, having the battery charge at ~80% most of the time, that would help a little. However, yet again, still not ideal conditions.

I am also confused as Apple System Info says battery condition is "Normal"?

Here’s a thread I’ve been referencing in these situations:

An iPhone battery can last much more than 1000 cycles!!!

Ok so now I calibrated the battery once and the coconutBattery health aligned to battery health of the settings app. It displays 90% now, which should be the real SoH. And not the 100% from before. This shows that an uncalibrated battery management system can show a false health value for the...

forums.macrumors.com

That’s why I recommended a recalibration.

It’s possible the battery could (somewhat) recover now that it’s in normal use, but I wouldn’t bet the house on it.