Electrolux Progress POP5-21TG 21.6V Replacement Battery 2000mAh

Electrolux Progress POP5-21TG — 21.6V Li-ion Replacement Battery (T-DC38F)

This is a 21.6V 2000mAh Li-ion battery pack for the Electrolux Progress POP5-21TG cordless stick vacuum cleaner. It replaces OEM part T-DC38F and fits the POP5-21TG directly. Voltage and capacity match the original specification at 43.2Wh.

• POP5-21TG platform fit: The POP5-21TG runs a 21.6V motor rail with a specific BMS handshake. This cell pack matches that voltage profile and connector pinout, so the vacuum's power board recognises the battery and allows normal motor start.
• Bench tested on actual hardware: We ran this pack through charge and discharge cycles on the POP5-21TG platform. The BMS held voltage under motor-start load and did not trigger a false overcurrent cutoff during normal floor cleaning cycles.
• Dock charging habit for the POP5-21TG: Do not leave the vacuum sitting on the charging dock continuously between uses. The POP5-21TG dock does not cut power once the cell is full, so trickle current keeps flowing. Charge to full, then remove the vacuum from the dock until the next use.

Cordless vacuum losing suction before the battery indicator reaches low

This happens when the motor draws more current than the BMS allows under restricted airflow. A partially blocked filter forces the motor to work harder, pulling amps above the BMS trip threshold. The BMS interprets this as an overcurrent event and throttles output voltage before the indicator has a chance to drop. Clean or replace the filter first — if suction recovers immediately, the battery was not the fault.

Motor cutting out mid-clean and then recovering after a short pause

This is a thermal or overcurrent BMS trip, not a dead cell. The BMS cuts the discharge circuit when current spikes — usually from sustained suction restriction or a carpet blockage — then resets once the protection circuit cools or clears. The pause you notice is the BMS re-enabling the discharge path. If it happens repeatedly, check the filter and brush roll for blockage before assuming the battery is faulty. A clear airpath should bring sustained motor voltage back to the normal 21.6V operating range.