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Rowenta RS-RH5274 25.9V Cordless Vacuum Replacement Battery

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New arrival
From $96.99 USD $119.99
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Fits Rowenta RH8825WI / 2D2 and replaces OEM battery part number RS-RH5274.
25.9V and 2500mAh capacity deliver consistent motor power through a full cleaning cycle on carpet and hard floors.
Battery slides into the handle slot vertically with a push-lock tab that seats flush against the motor housing.
We bench-tested the BMS under sustained motor load — no early cutoff, voltage stayed above sag threshold under normal blockage scenarios.
Do not leave this pack on the charging dock after reaching full charge — continuous trickle current degrades lithium cells and causes capacity fade within weeks.
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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.

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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

25.9V

Amp

2500mAh

Rowenta RH8825WI / 2D2 Series — 25.9V Li-ion Replacement Battery (RS-RH5274)

This 25.9V, 2500mAh lithium-ion battery pack replaces the OEM RS-RH5274 unit in Rowenta cordless stick vacuums. It fits the RH8825WI / 2D2, RH8827WO / 2D0 and 2D2, RH8828WO / 2D0, and over 70 additional models in the same platform. Voltage, capacity, and connector match the original specification.

  • RH88-series platform fit: These models share a common 25.9V seven-cell Li-ion architecture, the same bayonet-style connector, and a BMS that expects a matched voltage rail on startup. Swapping to a different voltage pack triggers an immediate protection cutoff — this battery stays within spec so the BMS handshake completes normally.
  • Bench tested on actual hardware: We cycled this pack through full charge and discharge on the RH8825WI motor load. The BMS held steady under sustained suction draws, recovered correctly after a simulated blockage trip, and showed no voltage sag outside acceptable limits at the motor terminals.
  • Dock charging practice for the RH88 series: Do not leave the vacuum sitting on the charging dock permanently. The RH88 charger does not cut to zero once the pack is full — it continues a low trickle. Remove the vacuum from the dock when the charge light confirms full, and reconnect only when noticeably depleted.

Suction dropping before the battery indicator reaches low

On the RH88 series, the battery indicator tracks cell voltage at rest, not under load. A partially clogged filter forces the motor to draw more current than rated, which pulls the pack voltage down sharply mid-run — enough to reduce motor speed — while the indicator still reads mid-range. The battery is not the cause; the motor is brownout-starving. Clean the filter and check the cyclone inlet for blockage before concluding the new battery is underperforming.

Motor cuts out completely then recovers after a few seconds

This is a BMS overcurrent trip, not a cell failure. When sustained suction restriction — blocked nozzle, saturated filter, or hair wrapped around the brush roll — forces the motor to pull beyond the BMS current threshold, the pack shuts output to protect the cells. The BMS resets automatically once the current draw drops, which is why the vacuum restarts after a short pause. Clear the restriction first; if cut-outs continue on an unobstructed vacuum, check that the charger brought the pack to 29.4V before use.

Compatible Models

RH8825WI / 2D2 RH8827WO / 2D0 RH8827WO / 2D2 RH8828WO / 2D0 RH8828WO / 2D2 RH8829WO / 2D0 RH8829WO / 2D2 RH8865K0 / 9A0 RH8870WO / 2D0 RH8870WO / 2D2 RH887101 / 9A0 RH887101 / 9A2 RH887101 / HM0 RH8871WS / HM0 RH8872WO / 2D2 RH8872WO / 9A0 RH8872WO / 9A2 RH8874WO / 2D2 RH8874WO / 9A0 RH8874WO / 9A2 RH8875U1 / 9A0 RH8875U1 / 9A2 RH8876WO / 9A0 RH8879WO / 2D0 RH8879WO / 2D2 RH8879WO / 9A0 RH8879WO / 9A2 RH8920WO / 2D0 RH8929WO / 2D0 RH8970WO / 2D0 RH8971WO / 2D0 RH8972WO / 2D0 RH8825WI/2D2 RH8827WO/2D0 RH8827WO/2D2 RH8828WO/2D0 RH8828WO/2D2 RH8829WO/2D0 RH8829WO/2D2 RH8865K0/9A0 RH8870WO/2D0 RH8870WO/2D2 RH887101/9A0 RH887101/9A2 RH887101/HM0 RH8871WS/HM0 RH8872WO/2D2 RH8872WO/9A2 RH8874WO/2D2 RH8874WO/9A0 RH8874WO/9A2 RH8875U1/9A0 RH8875U1/9A2 RH8876WO/9A0 RH8879WO/2D0 RH8879WO/2D2 RH8879WO/9A0 RH8879WO/9A2 RH8920WO/2D0 RH8929WO/2D0 RH8970WO/2D0 RH8971WO/2D0 RH8972WO/2D0 RH8872WO/9A0 RH8827WO2D0 RH8828WO2D0 RH8829WO2D0 RH887101HM0 RH8871WSHM0 RH8876WO9A0 RH8865K09A0 RH8870WO2D0 RH8871019A0 RH8872WO9A0 RH8874WO9A0 RH8875U19A0 RH8879WO2D0

Replaces Part Numbers

RS-RH5274

Technical Specifications

Voltage25.9V
Amp Hours2500mAh
Capacity2500mAh
Rate64.75Wh
Net Weight411g /14.50 oz
Gross Weight591g /20.85 oz
Approximate Weight591g /20.85 oz
Dimension 225.20 x 48.10 x 50.40mm

Product Highlights

  • Brand: Rowenta
  • 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 Rowenta stick vacuum suctions fine for a minute then noticeably loses power — is that the new battery?

Likely not the battery. A restricted filter forces the motor to draw excess current, which drags pack voltage down under load even when cells are healthy. The battery indicator still reads mid-range because it samples at rest, not under load. Clean the filter and cyclone inlet, then run again — if suction stays consistent, the pack is fine.

The vacuum cut out completely mid-use and restarted on its own a few seconds later — what happened?

The BMS tripped on an overcurrent event. Sustained restriction — blocked nozzle, full filter, or tangled brush roll — pushes motor draw past the pack's protection threshold, and the BMS shuts output until current drops. Clear any blockage, then confirm the battery charged fully to 29.4V before the next run. If cut-outs continue on an unobstructed machine, the charger connection is the next thing to check.

The replacement battery fades noticeably faster than the original did when it was new — what causes that?

Continuous dock charging is the most common cause on the RH88 series. The charger does not fully cut off once the pack is full and the ongoing trickle degrades cell capacity over weeks. Remove the vacuum from the dock as soon as the charge indicator confirms full, store it off the dock, and reconnect only when the pack is genuinely depleted — that cycle pattern preserves usable capacity significantly longer.

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