Support answer · Use & Maintenance
How long does the Dolphin Nautilus EON 120d run on a single charge?
Short answer: The Dolphin Nautilus EON 120d provides up to 2.5 weeks of pool cleaning on one charge with UltraRun™ battery technology.
Based on Maytronics support, updated 2026-09-23, rewritten by Poolbots' pool experts. Applies to 2 models. Parts that fix it are below.
The answer
What to know.
The Dolphin Nautilus EON 120d and Dolphin EON 120d use UltraRun™ battery technology for up to 2.5 weeks of pool cleaning on a single charge.
Both operate without cords, hoses, or a booster pump.
Source: Maytronics support. Same steps and facts, rewritten for clarity; the videos and illustrations are Maytronics' own.
Replacement parts
Parts that fix this.
This answer comes down to power supplies & chargers. The exact part depends on the model: choose your robot and we open its parts list, or browse the category for every model.
Browse by category:Power Supplies & Chargers All genuine Dolphin parts →
By model
This answer on your robot.
Maytronics tags this answer for the 2 models below.
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