Aiper SE Robotic Pool Cleaner Replacement Battery 11.1V 5200mAh

Aiper SE Cordless Robotic Pool Cleaner — 11.1V Li-ion Replacement Battery (HYY0345175)

This 11.1V 5200mAh Li-ion battery replaces part number HYY0345175 in the Aiper SE Cordless Robotic Pool Cleaner. It fits the SE model's battery bay and connects via the original terminal block. Voltage and capacity match the stock specification exactly.

• Aiper SE compatibility: The SE Cordless Robotic Pool Cleaner runs a 11.1V three-cell Li-ion pack with a BMS that monitors cell balance and peak draw during drive motor and suction motor start-up. This replacement uses the same cell configuration, so the BMS handshake completes on first charge without calibration.
• Bench tested on actual hardware: We ran this battery through full charge-discharge cycles on a robotic pool cleaner test rig, simulating drive and suction motor load. The BMS held protection thresholds under peak start-up current and balanced cells correctly across all three cells at end of charge.
• Post-session terminal care: Rinse the battery housing with fresh water after every pool session before placing it on charge. Chlorine and salt residue accumulates on the terminal contacts and causes resistance that the BMS reads as a weak cell — triggering early cutoff on an otherwise healthy battery.

Robotic pool cleaner stopping mid-cycle on a new battery

When the SE cleaner hits a debris-heavy patch, both the drive motor and suction motor spike current simultaneously. If the combined draw crosses the BMS over-current threshold — even briefly — the pack cuts out to protect the cells. This is not a faulty battery; it is the BMS responding correctly to a real current event. Clear heavy debris from the pool floor before running a full cycle, or reduce suction power if the cleaner model supports it. A full charge before the cycle keeps cell voltage high enough to absorb those spikes without tripping the threshold.

Cleaner running slower than usual partway through a clean

Drive speed on the SE drops noticeably when cell voltage falls below roughly 9.9V — the point where the motor controller starts throttling output to protect the pack. This happens earlier than expected when the battery is not fully charged before use, or when cell balance has drifted after many partial cycles. Charge the battery to full before each pool session and confirm the charger LED indicates a complete charge before unplugging. If the cleaner still slows early after a full charge, check terminal contacts for corrosion residue and clean with a dry cloth.