XBP736 Euro Pro SV736 Replacement Battery 15.6V 3000mAh

Euro Pro SV736 / SV736R — 15.6V Ni-MH Replacement Battery (XBP736)

The XBP736 is a 15.6V Ni-MH battery pack rated at 3000mAh (46.8Wh), built to fit the Euro Pro SV736 and SV736R cordless stick vacuums, also sold under the Shark SV736 and SV736R names. When the original pack stops holding a charge, the motor loses consistent voltage and suction drops noticeably before the indicator even reaches low. This replacement restores the full voltage rail the motor needs to run at rated draw.

• SV736 and SV736R platform fit: Both model variants share the same battery bay geometry, connector pinout, and 15.6V nominal rail. The BMS communicates with the charger over the same three-pin interface, so one pack covers all four listed models without modification.
• Bench tested on actual hardware: We ran the XBP736 through full charge and discharge cycles on an SV736 chassis. The BMS accepted the charger handshake on the first connection, held voltage above 14V under sustained motor load, and triggered thermal protection correctly when we blocked airflow deliberately to simulate a clogged filter.
• Dock charging habit on Ni-MH cells: Do not leave the SV736 sitting on the charging dock between uses. Ni-MH cells develop capacity fade significantly faster under continuous trickle charge than cells that are charged to full and then removed. Charge only when depleted, then pull the vacuum off the dock.

Cordless vacuum losing suction before the battery indicator reaches low

The SV736 motor draws more current the moment airflow is restricted — a partially blocked filter or tangled brush roll pushes current demand past what a degraded cell can supply cleanly. Voltage sags below the threshold the motor needs to maintain brush speed, and suction drops even though the indicator still shows charge remaining. A fresh 3000mAh pack raises the effective voltage floor, but this symptom will return quickly if the filter stays dirty. Clean or replace the foam filter before fitting the new battery, or the motor will continue drawing above rated current on every run.

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

This is a BMS overcurrent trip, not a dead battery. When the brush roll meets resistance — thick carpet, a sock caught in the intake, compacted debris — current spikes sharply, the BMS reads it as an unsafe draw, and it cuts the output to protect the cells. The pack resets itself after a short cooldown, which is why power returns without you doing anything. The fix is to remove the restriction before restarting: clear the brush roll, check the intake path, and confirm the filter is clean. If the motor trips repeatedly on open floor with no visible blockage, test voltage at the pack terminals — a healthy XBP736 should read at least 15.6V off charge.