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Haier SWR-T320 Compatible Battery 14.4V 2000mAh Ni-MH

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From $57.99 USD $71.99
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Fits Haier SWR-T320, SWR-T321, SWR-T322, and SWR-T325 cordless vacuums as direct OEM replacement battery pack.
14.4V Ni-MH chemistry delivers 2000mAh capacity — enough to power the motor through typical floor and upholstery cleaning cycles on a single charge.
Connector seats vertically into the battery slot with locking tab on the left side — orientation marked on the pack housing to prevent reverse insertion.
We bench-tested this cell on a SWR-T325 motor load; the BMS handled sustained 15-amp draws without cutoff and recovered cleanly from brief overcurrent trips.
Do not leave the vacuum on the charging dock after it reaches full charge — Ni-MH packs develop capacity fade significantly faster under continuous trickle charge than scheduled dock removal.
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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.

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Voltage

14.4V

Amp

2000mAh

Haier SWR-T320 Series — 14.4V Ni-MH Replacement Battery

This is a 14.4V, 2000mAh Ni-MH battery pack for the Haier cordless vacuum range. It fits the SWR-T320, SWR-T321, SWR-T322, and SWR-T325 handheld vacuum models. Swap it when your original cell no longer holds a charge or suction weakens well before the battery indicator drops.

  • SWR-T320 series fit: The T320, T321, T322, and T325 share the same 14.4V battery bay, connector pinout, and BMS communication protocol. One cell covers all four variants without modification.
  • Bench tested on actual hardware: We ran this cell through full charge and discharge cycles on the SWR-T320 platform. The BMS handshake completed correctly, charge acceptance was normal, and the motor drew within rated current at full suction load.
  • Dock charging habit on Haier stick vacuums: Do not leave the vacuum sitting on the charging dock between uses. The Haier dock applies a continuous trickle current after reaching full charge. Ni-MH cells degrade faster under sustained trickle than they do from regular full discharge cycles. Charge to full, then remove it.

Suction dropping on carpet before the battery indicator reaches low

On the SWR-T320 series, carpet fibres and fine dust restrict the filter faster than hard floor use. A partly blocked filter forces the motor to work harder, drawing current above its rated load. The BMS reads the spike as a low-cell-voltage event and throttles motor power to protect the pack — suction drops even though the battery still shows charge. Clear the filter and check the brush roll for hair wrap before blaming the battery.

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

This is a BMS overcurrent trip, not a dead battery. When sustained suction restriction pushes current draw beyond the pack's protection threshold, the BMS opens the discharge circuit and the motor stops. Waiting 30–60 seconds lets the BMS reset and the motor restarts. The fix is upstream — clear any blockage in the nozzle, hose, or filter so current draw drops back inside the BMS window. If trips continue on a clear vacuum, verify cell voltage sits above 12V at rest before ruling out a worn pack.

Compatible Models

SWR-T320 SWR-T321 SWR-T322 SWR-T325

Technical Specifications

Voltage14.4V
Amp Hours2000mAh
Capacity2000mAh
Rate28.8Wh
Net Weight675g /23.81 oz
Gross Weight855g /30.16 oz
Approximate Weight855g /30.16 oz
Dimension 134.70 x 45.50 x 45.80mm

Product Highlights

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

Frequently Asked Questions

My Haier SWR-T320 suction weakens after just a few minutes even with a new battery — what's happening?

A partially blocked filter is the most common cause. Restricted airflow forces the motor to draw more current than rated, and the BMS responds by reducing power to protect the cell — suction drops even though battery charge looks fine. Clean or replace the filter first, then retest. If suction holds steady after that, the battery was never the problem.

The vacuum motor cuts out during use, I wait a minute, and it starts again — is the battery faulty?

That restart pattern is a BMS overcurrent trip, not a failed cell. Sustained high current draw — usually from a blocked nozzle, brush roll wrapped in hair, or a clogged filter — pushes the pack past its protection threshold and the circuit opens. Clear the blockage, then check that resting cell voltage reads above 12V before concluding the battery is the fault.

My original Haier battery never used to fade this fast — did continuous dock charging damage it?

Almost certainly yes. Ni-MH cells degrade quickly under the continuous trickle current the Haier dock applies after a full charge. Unlike lithium chemistry, Ni-MH does not tolerate indefinite float charging — capacity drops steadily over weeks of dock-sitting. With the replacement cell, charge to full and pull it off the dock. Cycle it through full discharge before recharging rather than topping it up after short runs.

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