Did I install a faulty battery in my 13" Macbook pro (early 2015)?

[daniel_m]

Hey guys, I recently replaced my Macbook pro 13” early 2015 battery and wanted to ask if this looks like signs of a faulty battery.

Upon installation I fully drained and recharged the battery and capacity showed to be 99%. After a few days (around 5 or 6 cycles), the battery capacity dropped from 99% to 94.6% mid-use while the computer was pretty warm.

On the next charge, my Macbook randomly shut off on its own mid-use again while at 70% charge. Turned it back on and kept using it, no noticeable difference in performance or battery life and didn’t shut off again since then. Now Im going on 9 cycles and according to Coconutbattery and Macbook finder the battery condition is “normal” and still at 94.6% capacity (so far). Manufacturer shows as SMP.

The battery performance itself looks to be fine and I’m getting a decent charge out of it (at least seemingly better than before), however when running apple diagnostics I’m getting the message PPT004 battery needs service. Should I be looking to replace it again? I’m also still on OSX 10.10, and I've done the SMC resets already

 

[shardey]

Is coconut battery showing designed capacity of that of an original Apple battery? If so and you didn't install a brand new genuine Apple battery, then expect the designed capacity to be different. As long as it discharges and charges normally and hold a good charge, I wouldn't sweat it too much.

As for the error, I could assume not being a genuine battery (if you didn't install one) could be the issue.

 

[daniel_m]

I got it off Amazon from a third party seller called "egoway" but the manufacturer shows as SMP which is supposedly the same manufacturer Apple gets their batteries from, I don't know.

It seems to charge and discharge normally so far, other than that random shut down a few days ago (even then it continued working fine).

Is the PPT004 error common with non-apple batteries?

 

[BrianBaughn]

I got a bad battery off of Amazon for a 2008 MacBook and it was apparent immediately. Sent it back and ordered from another seller and have been satisfied enough for a couple of years.

 

[daniel_m]

So just as an update, I re-calibrated the MBP and now the capacity is showing 98% which is more what I expected. It runs fine and I'm getting a good charge out of it still and I'm on 11 cycles now.

But I'm still seeing the PPT004 error when running diagnostics. Is it something I should be worried about even though the battery was produced by SMP?

 

[f54da]

Per the screenshot marcan's thread at twitter.com/marcan42/status/1484155025266180097?lang=en we see PPT004 corresponds to unsealed battery found. Sealed refers to BMS state, they probably reset cycles to zero after installing new cells and didn't retoggle seal bit. I.e. you installed a non-official battery, which is to be expected. Wonder why no one has dumped that entire json, could be very handy