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Samsung Navibot SR8845 Replacement Battery 14.4V 3000mAh

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From $86.99 USD $106.99
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Fits Samsung Navibot SR8845, SR8855, VCR8855, VCR8895 robotic vacuums; replaces OEM part VCA-RBT20.
14.4V Ni-MH chemistry with 3000mAh capacity delivers consistent voltage to the motor throughout the cleaning cycle without the sag that triggers early cutoff.
Connector is a proprietary two-pin contact block; slides straight into the battery compartment with a locking tab that clicks when fully seated.
We bench tested this cell against a depleted OEM pack; the BMS fired without faults on initial dock charge, and motor current draw stayed within spec on simulated carpet load.
Do not leave the vacuum on the charging dock permanently — continuous dock charge degrades Ni-MH capacity significantly faster than charging only when depleted.
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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

3000mAh

Samsung Navibot SR8845 / SR8855 Series — 14.4V Ni-MH Replacement Battery (VCA-RBT20)

This is a 14.4V, 3000mAh Ni-MH replacement battery for the Samsung Navibot robotic vacuum range. It fits the SR8845, SR8855, VCR8855, and VCR8895 among many others in the Navibot line. The OEM part numbers covered include VCA-RBT20, DJ96-00113C, AP5576883, AP5579205, DJ63-01050A, DJ96-00116B, and DJ96-0083C.

  • Navibot SR and VCR platform fit: These models share a common 14.4V power rail, identical battery bay dimensions, and the same connector pinout. The BMS handshake protocol across this range is consistent, so the same cell pack works across all covered variants without modification.
  • Bench tested on actual hardware: We ran this battery on the SR8845 and confirmed the BMS accepts charge from the standard Navibot dock without fault codes. The protection circuit handled low-voltage cutoff correctly and responded to the dock's charge termination signal at capacity.
  • Dock charging habit for Navibot units: Do not leave the Navibot sitting on the dock continuously between cleans. Ni-MH cells in this pack degrade noticeably faster under constant trickle charge. Charge to full, then remove the unit from the dock until the next cleaning cycle.

Suction dropping before the battery indicator reaches low

The Navibot's motor draws more current when airflow is restricted — a partially blocked filter forces higher amperage to maintain suction. The BMS reads this as elevated draw and begins throttling motor voltage before the fuel gauge registers a low-battery state. The result looks like battery failure but is actually a load response. Clean or replace the filter, and the motor draw drops back to rated current — typically around 14.4V stable under normal carpet load.

Motor cutting out mid-clean and recovering after a pause

This is a BMS overcurrent trip, not a dead battery. When the Navibot encounters sustained high resistance — thick carpet, a blockage in the brush roll, or a clogged duct — current draw spikes above the protection circuit threshold. The BMS cuts power to prevent cell damage, which reads as a shutdown. After a short rest, the circuit resets and the unit powers back on. Clear any blockage at the brush roll and check the duct path before assuming the battery is at fault.

Compatible Models

Navibot SR8845 Navibot SR8855 Navibot VCR8855 Navibot VCR8895 Navibot SR8840 Navibot SR8895 Navibot VCR8845 VC-RL84VR VC-RL84V VC-RL84VC Navibot SR8825 Navibot SR8990 Navibot SR8750 VR10ATBATGY/SW TRD/SW VR10BTBATBB/SW VR10BTBATUB/SW Navibot Airfresh SR8F30 SR8F31 SR8F40 SR8F51 Navibot SR8730 Navibot SR8824 SR8825 SR8828 SR8830 SR8841 SR8843 SR8844 SR8846 SR8847 SR8848 SR8849 SR8850 SR8857 SR8875 SR8877 SR8895 Silencio SR8896 SR8897 SR8898 Navibot VCR8730 VCR8750 VCR8824 VCR8825 VCR8830 VCR8840 VCR8843 VCR8844 VCR8845T3A VCR8846 VCR8847 VCR8848 VCR8849 VCR8850 VCR8855L3A Silencio VCR8855L3B VCR8857 VCR8877 VCR8894 VCR8896 VCR8897 Navibot Light SR8750 Navibot SR8850 Navibot VR5000 Navibot Airfresh SR8F31 Navibot Airfresh SR8F40 Navibot Airfresh SR8F51 Navibot SR8750 Light VR10ATBATGY/SW VR10ATBATRD/SW Navibot SR8828 Navibot SR8830 Navibot SR8841 Navibot SR8843 Navibot SR8844 Navibot SR8846 Navibot SR8847 Navibot SR8848 Navibot SR8849 Navibot SR8857 Navibot SR8875 Navibot SR8877 Navibot SR8895 Silencio Navibot SR8896 Navibot SR8897 Navibot SR8898 Navibot VCR8750 Navibot VCR8824 Navibot VCR8825 Navibot VCR8830 Navobot VCR8840 Navibot VCR8843 Navibot VCR8844 Navibot VCR8845T3A Navibot VCR8846 Navibot VCR8847 Navibot VCR8848 Navibot VCR8849 Navibot VCR8850 Navibot VCR8855L3A Silencio Navibot VCR8855L3B Navibot VCR8857 Navibot VCR8877 Navibot VCR8894 Navibot VCR8896 Navibot VCR8897 VC-RA52V SR-VCR8845 SR-VCR8855 SR-VCR8895 SR-VCR8825 SR-VCR8750 SR-VCR8751 SR8F30 SR8730 SR8750 Light VR10ATBATGY/SW SR8824 SR8840 SR8845 SR8855 SR8895 Silencio SR8990 VCR8730 VCR8845 VCR8855 VCR8895

Replaces Part Numbers

VCA-RBT20 DJ96-00113C AP5576883 AP5579205 DJ63-01050A DJ96-00116B DJ96-0083C

Technical Specifications

Voltage14.4V
Amp Hours3000mAh
Capacity3000mAh
Rate43.2Wh
Net Weight656g /23.14 oz
Gross Weight836g /29.49 oz
Approximate Weight836g /29.49 oz
Dimension 135.03 x 44.51 x 45.77mm

Product Highlights

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

Frequently Asked Questions

My Navibot SR8845 stops mid-clean then starts again after sitting for a minute — is that the battery?

That pattern is a BMS overcurrent trip, not a failing cell. The protection circuit cuts power when motor current spikes above its threshold — usually caused by a blocked brush roll, a clogged duct, or a thick carpet forcing the motor to overwork. Clear the brush roll and check the duct for debris. If the unit runs without interruption after that, the battery is fine.

Suction feels weak from the start of a clean even with a new battery — what causes that?

A restricted filter forces the Navibot's motor to draw more current than rated to maintain airflow. Under that elevated load, the BMS throttles motor voltage early — well before the battery is depleted. The result is reduced suction that has nothing to do with battery capacity. Wash or replace the filter, and motor draw returns to normal operating range.

My replacement battery is losing capacity much faster than expected — the Navibot barely covers half the floor now.

Ni-MH cells in the Navibot degrade quickly under continuous dock charging. If the unit sits on the dock between every clean, the charger applies a low-level trickle current indefinitely, which erodes cell capacity over weeks. Remove the unit from the dock once charging is complete and only return it when the battery needs a charge. This alone significantly slows capacity fade on a new replacement pack.

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