360 S6 Cordless Vacuum Compatible Battery 14.4V 2600mAh

360 S6 / S8 — 14.4V Li-ion Replacement Battery (D043-INR-M26-4S1P)

This is a 14.4V, 2600mAh Li-ion replacement battery for the 360 S6 and S8 cordless vacuum cleaners. It slots into the same battery bay and uses the same connector and BMS handshake as the original pack. Capacity is 2600mAh (37.44Wh) — taken from the product data, not estimated.

• S6 and S8 compatibility: Both models share the same 14.4V battery rail, physical form factor, and BMS communication protocol. The D043-INR-M26-4S1P part number covers both — no adapter or modification needed.
• Bench tested on actual hardware: We ran this pack through charge and discharge cycles on the S6 platform. The BMS responded correctly to the vacuum's motor-start current draw and did not trip under normal suction load. Cell voltage balanced across all four cells within expected range at full charge.
• Dock charging habit for S6 and S8: Do not leave the vacuum sitting on the charging dock continuously. Cordless vacuums on permanent dock charge develop capacity fade faster than those charged only when the pack is depleted. Charge to full, then remove from the dock.

Suction dropping before the battery indicator reaches low on the S6

This happens when the motor has to work harder than rated — usually because the filter is partially blocked. Restricted airflow forces the motor to draw more current, which pulls cell voltage down under load even when the pack reads healthy at rest. The BMS reads this voltage sag as a low-battery condition and throttles power before the indicator catches up. Clean or replace the filter first, then retest. If suction recovers, the battery was not the root cause.

Motor cutting out mid-clean and recovering after a few seconds

This is a BMS overcurrent trip, not a dead battery. When sustained restricted suction forces the motor to pull above the BMS current threshold, the pack shuts output to protect the cells. The BMS resets after a short thermal or timer delay — which is why the vacuum comes back on by itself. The fix is to clear the blockage or wash the filter. If the cutout continues on a clean filter with a new pack, check that resting cell voltage across the pack reads at or above 16.0V after a full charge.