Ar u sure ifixit u claimin this?

IMPORTANT: That battery is for the E5270/5470/5570 - NOT the 5250.

There are 3 for this laptop:

• RYXXH (3 cell/38Wh)
• G5M10 (4 cell/51Wh)
• R0TMP (4 cell/62Wh)

Not sure with this one and I’m leaning more towards no. The original is 7.4V and the pack sold here is 7.6V, so it won’t work. I don’t own an E5250 (and honestly, never will unless it’s cheap and I can get the owner information or transfer done). Normally it comes from the nominal (unloaded) voltage (which is always higher). Some 3rd party packs print the nominal instead of the load voltage, but you’re still taking a chance. DON’T CHANCE IT unless you’re absolutely certain as that kills machines or at least blows a fuse and cripples it into a 12” desktop.

The only reason there is 3 is because you have 2 different configurations:

• 2.5” SATA (38Wh)
• mSATA w/interposer (51/62Wh)

The reason I do not own an E5240/50 and cannot confirm much beyond some research is the SSD issue - you cannot use an M.2 SSD in them because of a shortsighted decision on the Haswell platforms that carried to Broadwell. If it was cheap enough even if I didn’t get the drive I could do the conversion to fix the problem at little cost to the total build price, I’d give it more then a few seconds of consideration before moving on, but it’s hard to find one that cheaply.

Once the mSATA SSD dies (which will happen EARLIER then it would with 2.5”), you need to buy a used SSD, KingSpec (no support/~$50+) or pay a lot for a Kingston mSATA (only ones left who will support the product). If you don’t want to do that, you need to downgrade the battery and reconfigure the machine to use normal 2.5” drives.

*The mSATA drives are known to have lower max TBW write limits.