The smaller battery allows for an internal 2.5" drive. The larger battery takes that space. You either get 2.5" drive bay or the larger battery - you can't have both.
You also lose about 50% of your runtime with the smaller battery (with the 4K screen, don't even consider it - you need the 97 WHr battery).
ejn63
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Posted September 12th, 2018 16:00
If the SSD is M.2, yes. If it's 2.5" SATA, no.
The battery will likely run you $150 or so -- it's not going to be inexpensive.