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Dolphin · Liberty Cordless Battery-Powered Robotic Pool Cleaner with Multi-Layer Filtration for In-Ground Pools up to 40 ft

Dolphin Liberty Cordless Battery-Powered Robotic Pool Cleaner with Multi-Layer Filtration for In-Ground Pools up to 40 ft BATT-LOW Error Fix: Battery Low or Depleted

The onboard lithium-ion battery charge is too low to continue cleaning — return the robot to its charging station and allow a full charge cycle before the next cleaning session

Medium severity2 fixes available✨ Free fix available

Quick Answer

Error BATT-LOW on the Dolphin Liberty Cordless Battery-Powered Robotic Pool Cleaner with Multi-Layer Filtration for In-Ground Pools up to 40 ft means: Battery Low or Depleted. The top-ranked community fix is “Test and Replace Lithium-Ion Battery Pack” (hard difficulty, ~90 min, DIY cost: $100-$150). 2 community-ranked fixes available below.

Published February 2026 · 2 fixes · pool cleaner

Content is based on manufacturer service documentation, community repair experience, and OEM technical bulletins. Always verify with your owner's manual.Learn about our editorial standards.

When to Call a Professional

While many pool cleaner repairs can be done safely at home, consider hiring a qualified technician if:

The repair involves electrical wiring, gas lines, or refrigerant
You've tried the top-ranked fix and the error persists
You smell gas, see sparking, or notice water leaking
The repair requires specialized tools you don't have
Your appliance is still under manufacturer warranty

Average professional repair cost for this issue: $250-$350.

Other Dolphin Liberty Cordless Battery-Powered Robotic Pool Cleaner with Multi-Layer Filtration for In-Ground Pools up to 40 ft Error Codes

APP-CONNECT

App Connection Failure

Battery Not Charging

Battery Overheating

Brushes Not Spinning

Worn Scrubbing Brushes

2 fixes

CABLE-CORROSION

Cable Connector Corrosion

Cable Deterioration

Cable Tangling

People Also Ask About Dolphin Liberty Cordless Battery-Powered Robotic Pool Cleaner with Multi-Layer Filtration for In-Ground Pools up to 40 ft Error BATT-LOW

What does error code BATT-LOW mean on a Dolphin Liberty Cordless Battery-Powered Robotic Pool Cleaner with Multi-Layer Filtration for In-Ground Pools up to 40 ft?

Error code BATT-LOW on the Dolphin Liberty Cordless Battery-Powered Robotic Pool Cleaner with Multi-Layer Filtration for In-Ground Pools up to 40 ft means: Battery Low or Depleted. The onboard lithium-ion battery charge is too low to continue cleaning — return the robot to its charging station and allow a full charge cycle before the next cleaning session

How do I fix error code BATT-LOW on my Dolphin Liberty Cordless Battery-Powered Robotic Pool Cleaner with Multi-Layer Filtration for In-Ground Pools up to 40 ft?

The most successful fix is "Test and Replace Lithium-Ion Battery Pack" (hard difficulty, ~90 minutes). Estimated DIY cost: $100-$150. HomeMD has 2 community-ranked fixes for this error.

Is error code BATT-LOW on a Dolphin Liberty Cordless Battery-Powered Robotic Pool Cleaner with Multi-Layer Filtration for In-Ground Pools up to 40 ft serious?

This error is rated medium severity. It should be addressed soon, but your appliance may still function in a limited capacity.

Can I fix Dolphin Liberty Cordless Battery-Powered Robotic Pool Cleaner with Multi-Layer Filtration for In-Ground Pools up to 40 ft error BATT-LOW myself?

Yes — the top-ranked community fix ("Test and Replace Lithium-Ion Battery Pack") is rated hard difficulty and takes about 90 minutes. Tools needed: T10 Torx screwdriver, Multimeter, Battery analyzer (optional).

How much does it cost to repair Dolphin Liberty Cordless Battery-Powered Robotic Pool Cleaner with Multi-Layer Filtration for In-Ground Pools up to 40 ft error BATT-LOW?

DIY cost: $100-$150. Professional repair typically costs $250-$350. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the Dolphin Liberty Cordless Battery-Powered Robotic Pool Cleaner with Multi-Layer Filtration for In-Ground Pools up to 40 ft have?

The Dolphin Liberty Cordless Battery-Powered Robotic Pool Cleaner with Multi-Layer Filtration for In-Ground Pools up to 40 ft has 8 other known error codes, including: APP-CONNECT (App Connection Failure), BATT-CHARGE (Battery Not Charging), BATT-OVERHEAT (Battery Overheating), BRUSH-STOP (Brushes Not Spinning), BRUSH-WORN (Worn Scrubbing Brushes), and 3 more.

What other error codes does the Dolphin Liberty Cordless Battery-Powered Robotic Pool Cleaner with Multi-Layer Filtration for In-Ground Pools up to 40 ft have?

The Dolphin Liberty Cordless Battery-Powered Robotic Pool Cleaner with Multi-Layer Filtration for In-Ground Pools up to 40 ft has 8 other known error codes:

APP-CONNECT — App Connection Failure (2 fixes)
BATT-CHARGE — Battery Not Charging (2 fixes)
BATT-OVERHEAT — Battery Overheating (2 fixes)
BRUSH-STOP — Brushes Not Spinning (2 fixes)
BRUSH-WORN — Worn Scrubbing Brushes (2 fixes)
CABLE-CORROSION — Cable Connector Corrosion (2 fixes)
CABLE-DAMAGE — Cable Deterioration (2 fixes)
CABLE-TANGLE — Cable Tangling (2 fixes)

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