Bissell 3050 7.4V Cordless Vacuum Compatible Battery 2500mAh

Bissell 2992+ / 2846 / 2991+ — 7.4V Li-ion Replacement Battery (3050)

This is a 7.4V, 2500mAh lithium-ion battery that replaces Bissell OEM part 3050. It fits the 2992+, 2846, 2991+, 2877, and 12 additional Bissell cordless handheld vacuum models. When the original cell loses capacity or won't hold a charge, this replacement restores full cordless operation without replacing the entire unit.

• Cross-model fit on 2992+ series: These Bissell handhelds share the same 7.4V two-cell Li-ion architecture, identical connector pinout, and BMS communication protocol — which is why one battery covers the 2846, 2877, 2991+, and 2992+ without modification.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the 2992+ platform. The BMS accepted the handshake from the charger immediately, and overcurrent protection tripped correctly under a simulated motor blockage at the expected threshold.
• Dock charging habit on Bissell handhelds: Do not leave the vacuum sitting on the charging dock continuously. Bissell handhelds on permanent dock charge develop capacity fade faster than units charged only when the cell is depleted. Charge to full, then remove from the dock.

Cordless vacuum losing suction before the battery indicator shows low

This happens when the motor is drawing more current than rated due to a partially blocked filter or restricted airflow — not because the cell is depleted. The voltage sags under that elevated load, and suction drops noticeably while the indicator still reads mid-range. Clean or replace the filter before assuming the battery is the problem. A healthy 7.4V cell should hold above 7.0V under normal motor load; if it's dropping below that with a clear filter, the cell needs replacing.

Motor cuts out mid-clean and then recovers after a short pause

This is a BMS overcurrent trip, not a dead battery. When sustained suction restriction forces the motor to pull beyond the BMS current limit, the protection circuit opens and cuts power. After a short cooldown, it resets and the vacuum runs again. The fix is almost always a blocked filter or a blockage in the pickup nozzle. Clear the restriction, and the BMS will stop tripping — if it continues with no blockage present, measure resting cell voltage; anything below 6.8V means the cell can no longer hold the motor-start load.