Surface Laptop battery dead? Or not?

kevm14 · Post by **kevm14** » Sat Dec 13, 2025 8:22 am

Was using the laptop this morning. It was off the charger for no more than 10 minutes. Then it just completely shut down. Zero warning. Just, poof, off. Would not turn back on.

Plugged it into the charger and it turned on. Windows indicated the battery had completely drained. I ran an energy report and got this:

Battery:Last Full Charge (%)
The battery stored less than 40% of the Designed Capacity the last time the battery was fully charged.
Battery ID 7006044739SMPM1005921
Design Capacity 45200
Last Full Charge 2460
Last Full Charge (%) 5

Battery:Battery Information
Battery ID 7006044739SMPM1005921
Manufacturer SMP
Serial Number 7006044739
Chemistry LION
Long Term 1
Sealed 0
Cycle Count 582
Design Capacity 45200
Last Full Charge 2460

Well that's not good.

So I let it charge to 99% and reran the powercfg /energy command. Got this:

Battery:Battery Information
Battery ID 7006044739SMPM1005921
Manufacturer SMP
Serial Number 7006044739
Chemistry LION
Long Term 1
Sealed 0
Cycle Count 582
Design Capacity 45200
Last Full Charge 32890

That's a hell of a lot better. Still 73% of the original capacity though which is fairly significant. But then I let it charge to 100% which took some time and I was hopeful it was continuing to take a charge.

Battery:Battery Information
Battery ID 7006044739SMPM1005921
Manufacturer SMP
Serial Number 7006044739
Chemistry LION
Long Term 1
Sealed 0
Cycle Count 582
Design Capacity 45200
Last Full Charge 34810

"Only" 77% of original capacity meaning about 1/4 is lost. Not awesome but considering I thought the battery had almost completely failed I can certainly work with this. I guess something with the charging probably got confused and now it is unconfused.

This laptop is quite sealed and battery replacement is involved. I haven't watched an actual video but I know this to be true.

Unavailable example of a replacement battery: https://www.amazon.com/CENIFENX-G3HTA03 ... B0B361YTWZ

I think since I extended Win 10 support until next October I can consider that about the end of its life. After that I am not sure. Probably a new/used daily driver and not sure what this becomes.