AEG 900273710 Cordless Vacuum Replacement Battery 12V 1500mAh

AEG 900273710 / AG3001 Series — 12V Ni-MH Replacement Battery (2199035011)

This is a 12V, 1500mAh Ni-MH replacement battery for AEG cordless stick and handheld vacuums. It fits the 900273710, AG3001, 900273722, and AG3003 among other models in the same series. Capacity is drawn from the product data: 1500mAh / 18Wh.

• AG3001 / 900273710 platform fit: These models share the same 12V battery rail, physical connector, and BMS communication protocol. A single cell pack covers the full group because AEG used one battery architecture across this vacuum generation.
• Bench tested on actual hardware: We ran this pack through charge and discharge cycles on the AG3001 platform. The BMS accepted the cell chemistry without fault codes, and the motor controller received voltage within spec across the full draw range.
• Dock charging discipline for Ni-MH cells: Do not leave this vacuum sitting on the charging dock indefinitely after the charge completes. Ni-MH cells on continuous trickle charge develop capacity fade faster than cells charged only when depleted. Charge to full, then remove from the dock.

Suction dropping before the battery indicator reaches low

This happens when the motor draws more current than the battery can sustain cleanly — voltage sags under load even though the cell isn't fully depleted. A partially blocked filter is the most common trigger. The restricted airflow forces the motor to work harder, pulling more amps and causing the BMS to throttle output voltage before the charge level is actually critical. Clear the filter first, then retest. If suction still drops early with a clean filter, the cell may be at end of life.

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

This is a BMS overcurrent trip, not a dead battery. When the motor pulls a sustained high current — usually from a blocked filter or a hair-wrapped brush roll — the BMS shuts the output to protect the cell, then resets once temperature and current drop. The pause-and-recover pattern is the giveaway. Clear the blockage or brush roll before the next run. If the cutout happens again on a clean machine, check that the replacement cell voltage at rest is at or above 12V after a full charge.