Satechi quietly solved a nagging problem at CES 2026: what happens when the battery in your thin wireless keyboard stops holding a charge? The company’s new Slim EX series — two keyboards and a matching low-profile mouse — keeps its slim aesthetic but tucks in a user-replaceable lithium pack so you don’t have to toss the whole peripheral when the cell ages.
Thin, cross-platform, and built to be repaired
The lineup includes the compact Slim EX1 and full-size Slim EX3 keyboards, plus the Slim EX wireless mouse. All three share a similar brief: laptop-like scissor switches, quiet operation, USB-C charging, and support for multiple hosts. The keyboards can connect to up to four devices (Bluetooth channels plus a USB-C 2.4GHz dongle), and they automatically remap modifier keys for macOS or Windows so shortcuts feel natural regardless of platform.
The removable battery is the headline. On the keyboards you access it via a small compartment on the underside — you’ll remove a Phillips-head screw, slide off the cover, and swap the pack. The mouse takes that idea further: Satechi’s design makes its cell replaceable without tools. The practical upshot is fewer disposable accessories, and a product that’s easier to maintain in the long run. Satechi also says the batteries will be covered under warranty and that replacements are available through customer support.
Battery life is rated at several weeks per charge for the keyboards (Satechi cites up to five weeks), while the mouse promises months of use between charges depending on usage patterns. Physically the keyboards keep an ultra-thin profile aimed at people who like laptop-style typing; the EX3 adds a numeric keypad and full-size arrow keys for desk work. The mouse pairs two Bluetooth channels and a USB-C dongle (Notebookcheck notes it can switch among three devices) and keeps an aluminum top shell for a more premium feel than most budget mice.
Prices are straightforward: the Slim EX1 is $49.99, the EX3 $69.99, and the EX mouse $29.99. Colors are Space Black and Silver, and Satechi plans combo bundles later in the quarter.
Why it matters
Replaceable batteries aren’t flashy, but they’re meaningful. A typical slim wireless keyboard is sealed tight to keep thickness down — which has often meant a dead battery = dead product. Satechi’s move addresses both user convenience and waste: rather than buying a whole new keyboard in a few years you can swap a modestly priced pack and keep your accessory for longer.
For people building a tidy, multi-device desk setup — especially those who mix laptops, tablets and phones — the Slim EX line promises fewer fiddly pairing sessions and a consistent key feel across machines. If you often switch between a laptop and other gear, the keyboards pair nicely with machines like the MacBook, and the remapping feature helps keep shortcuts behaving as expected.
Satechi didn’t stop at peripherals. The company also showed higher-end docking hardware at CES, including a Thunderbolt 5 CubeDock and Pro Cable aimed at creators who need lots of ports and high-power charging; those products are part of the same push to make desks more flexible and repairable [/news/satechi-intros-thunderbolt-5-cubedock-pro-cable-at-ces-2026].
If you’re shopping for a slim keyboard to travel with or to pair with a tidy desktop setup, the Slim EX series strikes a practical balance between style and longevity. And if you’re in the market for a new laptop to pair with it, recent MacBook Air deals may make upgrading your whole setup more tempting.