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RobZone Roomy 2.0 Replacement Battery 14.4V 2600mAh LI-022148

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Sale priceFrom $48.99 USD Regular price $60.99
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Fits RobZone Roomy 2.0 and replaces OEM part numbers LI-022148-BYD, BYD-F1, 4UR18650A-26, and 4UR18650A-26-V2.
This 14.4V 2600mAh cell delivers the motor voltage needed to maintain suction pressure during full-carpet cleaning cycles without sag.
Connector seats vertically into the battery slot; the locking tab engages flush with the pack housing on full insertion.
We bench-tested this cell in a Roomy 2.0 dock — the BMS accepted the charge handshake immediately and held voltage stable under sustained motor draw.
Do not leave the vacuum on the charging dock permanently; cordless vacuums on continuous dock charge develop capacity fade significantly faster than those charged only when depleted.
Extended delivery time

Available by SPECIAL ORDER. Delivery for this product typically takes 2 weeks.

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Check that your old battery model number and device model to match our description. This makes sure they work together.


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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

14.4V

Amp

2600mAh

RobZone Roomy 2.0 — 14.4V Li-ion Replacement Battery (LI-022148-BYD)

This is a 14.4V 2600mAh lithium-ion replacement battery for the RobZone Roomy 2.0 robotic vacuum cleaner. It also fits the Roomy Gold, Silver, and DOG variants that share the same battery bay and voltage rail. Capacity is rated at 37.44Wh and matches the original cell specification.

  • Roomy 2.0 series compatibility: The Roomy Gold, Silver, DOG, and base Roomy 2.0 all use the same 14.4V battery housing, connector pinout, and BMS handshake protocol. Any unit in this family will accept this cell without modification.
  • Bench tested on actual hardware: We cycled this battery through full charge and discharge runs on a Roomy 2.0 unit. The BMS responded correctly to charging input, held voltage within the expected range under motor load, and triggered protection cutoff cleanly at the low-voltage threshold.
  • Dock charging habit on the Roomy 2.0: Do not leave the vacuum sitting on the charging dock continuously between uses. Robotic vacuums on permanent dock charge develop capacity fade significantly faster than those charged only when the battery is depleted. Charge to full, then remove it from the dock.

Suction dropping before the battery indicator reaches low

This is one of the most misread symptoms on the Roomy 2.0. The battery indicator reads mid-level, but suction noticeably weakens. The cause is voltage sag — a degraded or partially discharged cell cannot hold voltage steady under motor load, especially when the filter is partially blocked. The motor drops RPM before the indicator catches up, because the indicator reads resting voltage, not load voltage. Clean or replace the filter first, then check whether the symptom persists with a fresh battery.

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

This is a BMS overcurrent trip, not a battery failure by itself. When suction is restricted — blocked filter, jammed brush roll, or thick carpet pile — the motor draws sustained current above the BMS trip threshold. The BMS cuts power to protect the cell, then resets after a short cooldown. The fix is to clear the restriction first. If cutouts continue on open hard floor with a clean filter, the cell's internal resistance may have risen enough that normal motor-start draw is triggering the trip — that points to a cell replacement.

Compatible Models

Roomy 2.0 Gold Silver DOG Fun Beat KS-290 Fun Beat KS290 Bralko Galaxy Roomy 3.0

Replaces Part Numbers

LI-022148-BYD BYD-F1 4UR18650A-26 4UR18650A-26-V2

Technical Specifications

Voltage14.4V
Amp Hours2600mAh
Capacity2600mAh
Rate37.44Wh
Net Weight188g /6.63 oz
Gross Weight258g /9.10 oz
Approximate Weight258g /9.10 oz
Dimension 67.00 x 40.00 x 37.00mm

Product Highlights

  • Brand: RobZone
  • 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 Roomy 2.0 stops mid-clean, pauses, then starts again — is that the battery or a blockage?

That stop-and-restart cycle is a BMS overcurrent trip recovering after cooldown — not a random fault. The motor draws more current when suction is restricted, and the BMS cuts power before the cell is damaged. Check the filter and brush roll for blockages first. If it still cuts out on open floor with a clean filter, the cell's internal resistance has likely risen and the battery needs replacing.

The Roomy 2.0 seems to lose suction strength well before it shows a low battery signal — why?

The battery indicator reads resting voltage, not voltage under motor load. A degraded cell sags in voltage during motor operation, which drops RPM and suction, while the indicator still shows a mid-level charge. A partially blocked filter makes this worse by forcing the motor to draw harder. Clean the filter first — if strong suction returns, the filter was the cause. If suction stays weak even with a clean filter, the cell is no longer holding voltage under load and should be replaced.

Will leaving my Roomy 2.0 on the dock all the time between cleans shorten the battery life?

Yes — continuous dock charging causes capacity fade faster than normal cycling does. Most robotic vacuum chargers do not shut off cleanly once full, and prolonged trickle charge degrades lithium-ion cells. Charge the battery to full, then remove the vacuum from the dock until the next use. If the battery has already been on continuous dock charge for months, expect reduced capacity from the current cell regardless of brand.

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