Solac AE2536 36V Cordless Vacuum Replacement Battery 2200mAh

Solac AE2536 Series — 36V Li-ion Replacement Battery (S00001979)

This 36V, 2200mAh lithium-ion battery replaces the original S00001979 cell in the Solac AE2536 and AE2536 2JG cordless stick vacuum. It delivers the same voltage rail the motor controller expects, so suction performance stays consistent from the first pass to the last. Capacity matches the original at 2200mAh (79.2Wh).

• AE2536 and AE2536 2JG compatibility: Both models share the same 36V battery bay, connector pinout, and BMS handshake protocol — one cell fits either unit without modification.
• Bench tested on actual hardware: We ran this battery through full charge and discharge cycles on the AE2536 platform. The BMS communicated correctly with the charger, accepted a full charge without error flags, and released current to the motor without overcurrent trips under sustained load.
• Dock charging on the AE2536: Do not leave the vacuum sitting on the charging dock continuously between uses. The AE2536 dock applies a low-level trickle charge when the battery is full, and sustained trickle charging accelerates cell degradation measurably. Charge to full, then remove from the dock.

Suction dropping before the battery indicator reaches low on the AE2536

This is one of the most common complaints on the AE2536 and it usually isn't the battery. When the filter is partially blocked, the motor works harder to maintain airflow and draws more current than rated. The BMS detects the sustained overcurrent and steps down the voltage delivered to the motor, which the user feels as suction loss — even though the battery indicator still shows charge remaining. Clean or replace the filter first, then retest. If suction holds consistently after a filter clean, the battery is fine.

AE2536 motor cuts out mid-clean and then recovers after a few seconds

A momentary cut-out followed by recovery is a BMS overcurrent trip, not a dead battery. It happens when the vacuum runs over a blockage or a thick carpet pile that stalls airflow — the motor pulls a spike of current, and the BMS shuts output to protect the cells. The protection circuit resets automatically once the load drops. Clear any blockage, check the filter, and restart. If the cut-out happens repeatedly on open floor with no obstruction, the replacement cell's BMS may need a full charge cycle to calibrate — charge to 100% before further use.