Upgraded 4000mAh N79 14.4V Battery for RoboVac and Deebot - Long Run

In this review the Upgraded 4000mAh N79 14.4V replacement battery is evaluated for owners of Eufy RoboVac and compatible Deebot machines who need noticeably longer cleaning sessions. The bottom line: this replacement impresses by delivering a genuine 4000mAh capacity that produces substantially longer run times versus stock cells, making it a straightforward swap for older robots with diminished battery life. Our review found it easy to confirm compatibility, safe to use thanks to built-in protection circuitry, and well suited to users who want two-hour cleaning windows without buying a new vacuum.

Key Features

• Real 4000mAh capacity: The measured 4000mAh Li-ion cell provides extended cleaning cycles, commonly reaching 120 to 180 minutes on a full charge depending on the model and age of the robot.
• Wide compatibility: Fits a long list of Eufy RoboVac and Deebot N79 series models when the original battery uses a 3-prong plug, avoiding fitment surprises.
• Built-in safety PCBA: Integrated CC CV charging circuitry offers over-charge, over-discharge, over-current and short-circuit protection for safer use and longer battery life.
• Long cycle life: Rated for up to 1000+ cycles in some notes and conservatively usable for many hundreds of full cycles without significant capacity loss.
• Li-ion chemistry benefits: No memory effect and a relatively low self-discharge rate make the battery convenient for periodic cleaning schedules.

Who It's For

This battery is aimed at owners of compatible robot vacuums who are seeing shorter run times from their original battery and want a cost-effective way to restore or extend cleaning duration. It is especially useful for users who run frequent longer cleaning sessions or larger homes where 2-hour runs are helpful.

It is not intended for robots with a different connector type than the listed 3-prong plug, nor for users who prefer factory-brand replacements or warranty-covered service from the original manufacturer. Buyers should remove the original battery to confirm the plug match before purchasing.

Pros & Cons

Pros

• Noticeably longer run time on full charge, often allowing 120 to 180 minutes of cleaning depending on model.
• Compatible with many RoboVac 11/11S/30 series and Deebot N79 models when connector matches.
• Built-in protections increase operational safety and help extend battery lifespan.

Cons

• Cleaning time varies by machine model and age, so some users may see less than the top end of the stated range.

Specifications

Our Verdict

The Upgraded 4000mAh N79 14.4V replacement is a practical, value-oriented choice for anyone whose RoboVac or compatible Deebot no longer holds a long charge. With a true 4000mAh capacity, safety PCBA protections, and broad model support when the connector matches, it restores runtime affordably and reliably for most users who need longer cleaning sessions without replacing the entire robot.

Frequently Asked Questions

Will this battery fit my RoboVac?
It fits many RoboVac 11/11S/30 series and Deebot N79 models when your robot uses the same 3-prong plug; remove the original battery to confirm the connector before buying.

How long does a full charge last?
Typical cleaning time is 120 to 180 mins on a full charge, but the exact runtime depends on your robot model and the age of the machine.

Is the battery safe to use in the robot?
Yes, the battery includes built-in CC CV charging and protections for over-charge, over-discharge, over-current and short circuit, and it meets CE FCC ROHS certifications.