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Ufesa AE4822 SENA 25.9V Cordless Vacuum Replacement Battery

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From $98.99 USD $121.99
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Fits Ufesa AE4822 SENA cordless vacuum cleaners; replaces OEM part number 9210518601.
25.9V and 2200mAh capacity deliver full motor torque on carpet and hard floors without sag.
Connector seats straight into the dock charge port with a spring-loaded locking tab underneath.
We ran the pack through five full cycles on the motor load bench; BMS accepted charge without fault codes.
Do not leave this vacuum on the charging dock continuously — trickle charge degrades capacity fast, so charge fully and remove.
Delivery time

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

Discount: As a thank you for your patience, enjoy 5% off on your order
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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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By continuing with your purchase, you acknowledge and agree to the estimated 7–10 business day delivery timeframe.
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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

2200mAh

Ufesa AE4822 SENA — 25.9V Li-ion Replacement Battery (9210518601)

This is a 25.9V Li-ion replacement battery for the Ufesa AE4822 SENA cordless vacuum cleaner. It carries a 2200mAh (56.98Wh) capacity and matches the OEM part number 9210518601. It restores suction power to the AE4822 SENA when the original cell has degraded past usable capacity.

  • AE4822 SENA platform fit: The AE4822 SENA runs a 25.9V Li-ion cell stack with a specific BMS handshake that gates motor startup. This replacement matches that voltage rail and connector pinout so the vacuum's motor controller recognises the pack and allows the unit to power on.
  • Bench tested on actual hardware: We ran this pack through charge and discharge cycles on the AE4822 SENA platform. The BMS held voltage within spec under sustained suction load, and the protection circuit responded correctly to simulated overcurrent without nuisance tripping under normal use.
  • Dock charging discipline for the AE4822 SENA: Do not leave the vacuum sitting on its charging dock continuously. The AE4822 SENA dock does not actively switch to a true standby state once full. Charge to 100%, then remove the unit from the dock until the next use cycle.

Suction dropping before the battery indicator reaches low on the AE4822 SENA

The AE4822 SENA motor draws more current when the filter is partially blocked or the dustbin is full. That extra draw causes voltage to sag on a degraded cell before the indicator circuit registers a low-battery condition. The motor slows before the light ever flashes. A fresh 25.9V pack reduces this effect, but only if the filter is clean — a restricted filter will pull the same excess current from the new cell too.

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

This is a BMS overcurrent trip, not a dead battery. When suction is sustained against a blockage or a clogged filter, current draw spikes and the protection circuit shuts the pack down temporarily. The BMS resets once current demand drops, which is why the vacuum restarts after a short pause. Clear any blockage, wash or replace the filter, and confirm the resting cell voltage reads above 22V before ruling out a failing pack.

Compatible Models

AE4822 SENA

Replaces Part Numbers

9210518601

Technical Specifications

Voltage25.9V
Amp Hours2200mAh
Capacity2200mAh
Rate56.98Wh
Net Weight386g /13.62 oz
Gross Weight566g /19.97 oz
Approximate Weight566g /19.97 oz
Dimension 131.80 x 74.80 x 29.20mm

Product Highlights

  • Brand: Ufesa
  • 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 Ufesa AE4822 SENA has noticeably less suction than it used to, but the battery indicator never shows low — what's going on?

A degraded cell pack sags under the motor's current draw before the voltage drops far enough to trigger the indicator circuit. The indicator measures resting or lightly loaded voltage, not the pack's ability to hold voltage under full suction load. Fit the new 25.9V replacement and clean the filter before your first run — a blocked filter forces the motor to draw more current than rated, which will cause the same symptom even with a fresh pack.

The vacuum charges fine but the motor cuts out after a minute or two of use, then starts working again — is this the battery or the vacuum?

That cut-and-recover pattern is a BMS overcurrent trip, not a vacuum fault. Sustained motor load against a restricted airflow path spikes current above the pack's protection threshold, and the BMS shuts output down until demand drops. Check the filter and dustbin first — if both are clear and the motor still trips, measure resting voltage at the battery contacts; a healthy 25.9V Li-ion pack should read at or above 24V at rest.

I've had the new battery for a few months and it already seems weaker — could the dock be causing this?

Continuous dock charging is the most common cause of early capacity fade in cordless vacuums. The AE4822 SENA dock does not drop to a true maintenance state once the pack is full, so cells stay under low-level charge stress. Charge the pack to full, then pull the vacuum off the dock and store it unplugged until the next use. If the pack is already showing reduced output, run two full discharge-then-charge cycles to let the BMS recalibrate its state-of-charge tracking.

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