Isweep X3 Replacement Battery 14.8V 2600mAh Li-ion

Isweep X3 — 14.8V Li-ion Replacement Battery

This is a 14.8V 2600mAh (38.48Wh) lithium-ion battery pack for the Isweep X3 robotic vacuum cleaner. It replaces the original cell when the existing pack has lost charging capacity and can no longer sustain the motor through a full cleaning cycle. Fits the X3 platform directly.

• Isweep X3 platform fitment: The X3 draws a consistent 14.8V nominal supply to run both the drive motors and the suction impeller from a single pack. This battery matches that voltage rail and the physical form factor — 69.40 × 37.30 × 37.30mm — so the pack seats and connects correctly without modification.
• Bench tested on actual hardware: We cycled this pack through load draw tests simulating the X3's motor start surge and sustained suction draw. The BMS held voltage above the undervoltage cutoff threshold through repeated cycles and did not trip on the initial inrush current at power-on.
• Dock charging discipline on the X3: The X3 auto-returns to its dock and stays connected indefinitely. That continuous trickle current degrades lithium cells faster than normal cycling. Charge to full, then remove the unit from the dock if it won't run again for an extended period.

Cordless vacuum losing suction before the battery indicator reaches low

This happens when the motor draws above its rated current — usually from a blocked filter or partial blockage — and the BMS throttles output voltage to protect the cells. The suction impeller slows under reduced voltage, so cleaning performance drops well before the indicator signals a low-battery state. The pack itself is not the root cause. Clean or replace the filter first, then test suction under normal load.

Motor cutting out mid-cycle and then recovering on its own

This is a BMS overcurrent trip, not a cell failure. When suction is restricted — blocked brush roll, clogged filter, or hair wrap — the motor pulls sustained high current and the BMS cuts output to prevent cell damage, then resets after a few seconds. The cycle repeats until the restriction is cleared. Inspect the brush roll and filter before assuming the battery is faulty — clearing the blockage stops the trip entirely.