Which is better for typing all day?

The K8, for most people. Its TKL layout spaces the navigation keys apart and the aluminum option adds stiffness. The K2 is fine for typing but its compact right column takes adjustment.

Which is better for a small desk?

The K2. The 75% body is shorter and narrower than the K8's 355 x 123 mm footprint, and it still keeps the function row.

Do they have the same battery life?

Yes. Both use a 4000 mAh battery rated up to 240 hours of typing with the backlight off, and both charge over USB-C.

Can I change the switches on both?

Yes. Both are hot-swappable, so you can swap MX-style switches without soldering. The K8 takes 3-pin and 5-pin switches.

Is the K2 worth the extra $5?

Only if size matters most. At $49.99 at eBay versus $45.00 for the K8 as of November 6, 2026, you pay a little more for a smaller board with the same battery and connectivity.

Which works better with a Mac?

Both list macOS support and a Mac layout option. The K8 also lists Linux and Android support explicitly, and both pair with up to three devices over Bluetooth.

Keychron K8 Wireless Mechanical Keyboard vs Keychron K2 Wireless Mechanical Keyboard

Both are compact Keychron wireless boards with Bluetooth to three devices, a 4000 mAh battery and hot-swap switches. The K8 is tenkeyless with a wider key spread and a function row; the K2 is a 75% board that squeezes in the function row and keeps Home/End/Page Up/Down. At the latest prices the K8 is $45.00 at eBay and the K2 is $49.99 at eBay as of November 6, 2026, so the gap is about $5. Buy the K8 for a roomier TKL layout; buy the K2 if you want the smallest board that still has function keys.

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