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Tefal TY9152 Cordless Vacuum Replacement Battery 25.9V 2600mAh

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From $60.99 USD $75.99
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Fits Tefal TY9152, TY9171, TY9179 cordless stick vacuums replacing OEM part RS-2230001774.
25.9V and 2600mAh capacity sustains motor draw across carpeted floors without mid-cycle voltage sag.
Connector slides into dock housing with locking tab — orient contacts upward and press until tab seats.
We tested this cell on a TY9152 unit; BMS accepted charge cycle without fault codes and held voltage under sustained motor load.
Do not leave this battery on the charging dock continuously — trickle charge degrades capacity faster than removing the pack when fully charged.
Delivery time

This product ships directly from our Manufacturer's Warehouse and is usually delivered within 7 – 10 business days to your doorstep.

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Fresh Battery, Worth the Wait

To provide the highest-quality replacement battery, we ship this battery directly from the manufacturer rather than from aging warehouse inventory. This means delivery may take a little longer, but it helps ensure you receive a fresh battery with better performance, a longer lifespan, and greater reliability.

Estimated delivery: 7–10 business days
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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

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

Disclaimer

⚠️ 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

25.9V

Amp

2600mAh

Tefal TY9152 / TY9171 / TY9179 Series — 25.9V Li-ion Replacement Battery (RS-2230001774)

This 25.9V Li-ion battery replaces OEM part RS-2230001774 in Tefal cordless stick vacuums. It fits the TY9152, TY9171, TY9179, and TY9152WO/2D1 models. Capacity is 2600mAh (67.34Wh), matching the original cell specification.

  • TY9152 / TY9171 / TY9179 platform fit: These models share the same 25.9V battery rail, connector pinout, and BMS handshake protocol. One cell pack covers the full listed range without modification.
  • Bench tested on actual hardware: We ran charge and discharge cycles on this cell in a TY9152 unit. The BMS communicated correctly with the charger, reached full charge without fault codes, and the motor drew rated current under normal load without triggering overcurrent cutoff.
  • Dock charging habit on Tefal stick vacs: Do not leave this vacuum sitting on the charging dock continuously between uses. Constant trickle charge degrades Li-ion cell capacity significantly faster than normal cycle use. Charge to full, then remove from the dock until the next clean.

Suction dropping before the battery indicator reaches low

On the TY9152 platform, suction loss under load almost always comes from voltage sag at the motor, not from actual low capacity. A partially blocked filter forces the motor to draw above its rated current. The BMS reads the resulting voltage drop as a low-cell event and throttles output to protect the pack. Clean the filter first — if suction recovers, the battery was not the cause.

Motor cuts out mid-session then comes back on its own

This is a BMS overcurrent trip, not a dead battery. When sustained suction restriction — blocked filter, tangled brush roll, or sealed floor nozzle — forces current above the BMS threshold, the pack shuts output off as a protection measure. It resets automatically once current demand drops. Clear the restriction, wait 10 seconds, then power back on. If cutouts continue with a clean filter, check that the replacement cell BMS is rated to the same cutoff threshold as the original — the RS-2230001774 spec calls for a 25.9V nominal pack.

Compatible Models

TY9152 TY9171 TY9179 TY9152WO / 2D1 TY9171WO / 2D1 TY9179WO / 2D1

Replaces Part Numbers

RS-2230001774

Technical Specifications

Voltage25.9V
Amp Hours2600mAh
Capacity2600mAh
Rate67.34Wh
Net Weight396g /13.97 oz
Gross Weight706g /24.90 oz
Approximate Weight706g /24.90 oz
Dimension 297.50 x 52.10 x 30.50mm

Product Highlights

  • Brand: Tefal
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My Tefal TY9152 loses suction halfway through vacuuming even though the battery indicator still shows plenty of charge — what's going on?

This is usually voltage sag under motor load, not a capacity problem. A restricted filter makes the motor pull more current than rated, which causes the cell voltage to dip and the vacuum to reduce power even with charge remaining. Clean the filter and brush roll first — in most cases suction returns to full strength immediately. If it doesn't, check the replacement cell is at 25.9V nominal, which is what the TY9152 motor controller expects.

My Tefal stick vac's battery used to last a full session but now dies much sooner — it charges fine and shows full, yet fades quickly. Why?

Capacity fade from continuous dock charging is the most common cause on this platform. Leaving the vacuum permanently docked keeps the cells in a trickle-charge state, which degrades Li-ion capacity over time faster than normal cycling does. A replacement RS-2230001774 cell restores original capacity only if the dock habit changes — charge to full, remove the vacuum from the dock, and return it only when depleted. A new cell left on permanent dock charge will follow the same fade curve within months.

The replacement battery charged fully but the TY9152 motor cuts out after a few seconds of use and then resets itself — is the cell faulty?

This points to a BMS overcurrent trip, not a defective cell. The BMS shuts down output when instantaneous current exceeds its threshold — a blocked filter or tangled brush roll is usually the trigger, because restriction makes the motor spike current at startup. Clear any blockage, wait 10 seconds for the BMS to reset, then test again on an unobstructed hard floor. If cutouts stop, the cell is fine; if they persist on a clear floor, verify the replacement pack BMS is rated for the 25.9V / 2600mAh spec of the original RS-2230001774.

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