Budget for consumables on a schedule and buy situational upgrades only after you have watched your mower run and seen the real problem. Each card below says who actually needs it; our accessories guide covers every item in depth.
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Maintenance
Replacement blade kits
$15-$40 a set
Robot mower blades are small consumables. Buyers replace them repeatedly through the season.
Buy the kit made for your mower's brand and model: robot blades are small, pivoting and balanced as a set, and the wrong weight or thickness can unbalance the cutting disc. Plan on a fresh set every 6-10 weeks of mowing (flip double-edged blades once first), and always replace the mounting screws with the blades.
A garage protects the dock and mower from sun, rain, and debris, and it is a natural add-on after purchase.
Worth it most in high-UV, high-heat yards such as Arizona, Texas, Florida and inland California, where shade protects the battery and the plastics. Check that it clears the dock's cable and lets the mower drive straight in and out, and never park an RTK antenna under it: covering the antenna makes positioning worse.
RTK and NetRTK buyers often need cleaner antenna placement for open-sky reception.
Only for mowers that position with a local RTK antenna, and only if the app shows a real positioning problem. Try moving the antenna to open sky first; a mast or extension cable lifts it onto a roof, pole or high wall. LiDAR and NetRTK mowers do not use a local antenna, so a mount does nothing for them.
Wired mower owners need repair connectors, extra wire, and staples when lines break or yards change.
Only for boundary-wire mowers; in our catalog that is the WORX Landroid M and the Husqvarna Automower 430X. Keep a spool of the manufacturer's matching wire and its waterproof splice connectors on hand, because a twisted-and-taped repair corrodes and fails again.
Many app-connected mowers work better when the dock and yard have stable Wi-Fi coverage.
Only if the app's signal indicator is weak at the dock. It matters most for Wi-Fi-only mowers whose dock sits far from the router; mowers with 4G can update and send alerts over cellular instead.