Water Bot

Waters crops and collects water from nearby wells.

Waters crops that need it within 14 tiles of its station. Its tank holds 4 water (up to 16 with upgrades), one per watering, and it refills at the nearest Water Well; after 4 refills it goes home to recharge.

Recharging takes 16 seconds at its station and costs biofuel: 1, plus 1 for each capacity upgrade and for every second speed upgrade. Speed upgrades take it from 1 to 2.6 tiles a second. Each upgrade costs more than the last, counted across all bots of its kind. Demolishing one takes its upgrades back off that count, so the next upgrade costs less.