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Shark XBP736 Replacement Battery 15.6V 3000mAh Ni-MH

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New arrival
From $88.99 USD $109.99
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Fits Shark SV736, SV736R, SV70Z, SV736N and one additional model; replaces OEM part XBP736.
15.6V and 3000mAh capacity delivers full motor power on this Ni-MH platform without voltage sag during normal floor and carpet cleaning.
Connector slides straight into the battery slot with a single locking tab; no twisting required on insertion or removal.
We bench-tested this cell on the SV736 charging dock; the BMS accepted the charge cycle without fault codes or thermal events.
Do not leave the vacuum on the charging dock continuously — Ni-MH cells on permanent trickle charge develop capacity fade within weeks; charge to full and remove immediately.
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Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

Delivery and Shipping

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⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

15.6V

Amp

3000mAh

Shark SV736 / SV736R / SV70Z — 15.6V Ni-MH Replacement Battery (XBP736)

This is a 15.6V, 3000mAh Ni-MH replacement battery for the Shark SV736, SV736R, SV70Z, and SV736N cordless stick vacuums. It uses OEM part number XBP736 and drops into the same battery bay as the original. When the factory pack can no longer drive the motor through a full cleaning session, this cell restores full operating voltage to the vacuum.

  • SV736 series compatibility: The SV736, SV736R, SV70Z, and SV736N all run the same 15.6V power rail, use the same battery bay geometry, and share the same BMS handshake protocol. One cell covers the entire line.
  • Bench tested on actual hardware: We ran this pack through motor-start cycles on the SV736 platform. The BMS handled the inrush current on carpet mode without tripping, and cell voltage held stable across sustained suction draws.
  • Dock charging habit on SV736: Do not leave the vacuum sitting on the charging dock indefinitely after it reaches full charge. Continuous trickle current accelerates capacity loss in Ni-MH cells faster than in Li-ion packs. Charge to full, then remove from the dock.

Suction dropping before the battery indicator reaches low

Ni-MH cells under a restricted airflow load — clogged filter, tangled brush roll — draw more current than the motor circuit expects. Voltage sags under that elevated draw, and suction weakens well before the indicator registers a low-battery state. The battery is not at fault; the motor is working harder than rated to pull air through a restriction. Clear the filter and brush roll, then retest. If suction restores immediately, the pack is fine.

Motor cutting out mid-clean and then recovering after a few seconds

This is a BMS overcurrent trip, not a dead battery. When suction is blocked — full dustbin, compressed filter, or a floor seal against the nozzle — the motor spikes current draw beyond the BMS threshold. The BMS cuts power to protect the cell, waits for the current to drop, then re-enables the circuit. The recovery pause is the BMS reset timer completing. Empty the dustbin, tap the filter clean, and confirm the nozzle is not sealed flat against the floor before restarting.

Compatible Models

SV736 SV736R SV70Z SV736N SV736CR

Replaces Part Numbers

XBP736

Technical Specifications

Voltage15.6V
Amp Hours3000mAh
Capacity3000mAh
Rate46.8Wh
Net Weight727.2g /25.65 oz
Gross Weight797.2g /28.12 oz
Approximate Weight797.2g /28.12 oz
Dimension 90.32 x 66.26 x 45.38mm

Product Highlights

  • Brand: Shark
  • Manufacturer: CS
  • Series: Standard
  • Color: Blue
  • Product Type: Ni-MH
  • Battery Type: Ni-MH
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My Shark SV736 suction gets noticeably weaker partway through vacuuming, but the battery light doesn't show low — why?

A restricted airflow path — dirty filter, packed dustbin, or blocked nozzle — forces the motor to pull harder than its rated draw. That extra load causes the Ni-MH pack's voltage to sag under strain, which kills suction before the battery indicator reacts. The indicator measures remaining charge, not voltage under load. Remove and tap the filter clean, empty the dustbin, then retest — suction should return to full strength immediately if the pack is healthy.

My SV736 keeps shutting off for a few seconds and then starting again on its own — is the battery faulty?

That behaviour is the BMS tripping an overcurrent cutoff, not a failed cell. It happens when the motor current spikes past the BMS threshold — usually because the nozzle is sealed tight against a rug or the filter is too compressed to pass air freely. The BMS cuts the circuit, waits for current to fall, then resets. Check that the nozzle has clearance from the floor surface, clean the filter, and the cutouts should stop.

We replaced the battery and now the SV736 won't charge — the charger light just blinks or stays off. What's wrong?

The SV736 charger checks for a minimum cell voltage before it begins a charge cycle. If a deeply discharged replacement pack sits below roughly 10V, the charger reads it as a fault and refuses to start. Let the vacuum attempt to power on two or three times to draw the BMS out of sleep mode, then reconnect the charger. If the charger still won't initiate, leave the pack connected for 30 minutes — some chargers apply a low-rate conditioning pulse before switching to full charge.

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