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Rectangular lithium battery pack, dark casing, 70.1 by 37.1 by 37.1 mm

Estry

Estry DN622.21 14.8V 3400mAh standard battery

SKU CH-C6A9-07GKD MPN DN622.21

Lithium-ion replacement battery delivering 14.8 V and 3400 mAh for Ecovacs Deebot N79, N79S, DN622 and Mirror series robots

  • TypeBatteries
  • Battery Pack1-pack
  • Battery TypeLithium
  • Battery Capacity3000mAh
  • Battery Voltage14.8
  • Exact-spec replacement fits original battery dimensions
  • 8 V 3400 mAh capacity restores full run-time
  • Built-in overcharge, over-discharge, over-voltage and short-circuit protection
  • Certified to ISO 9001, RoHS, CE, UN38.3 and MSDS standards
  • Compatible with Deebot N79, N79S, DN622, DN620, DH45, DH43, DH35, CEN360, CEN361 and Mirror models

Replacement battery for Ecovacs Deebot N79 series

This 14.8V lithium pack replaces the original DN622.21 battery in compatible Ecovacs Deebot models including N79, N79S, DN622, DN621 and DN620. It delivers 3400mAh capacity and 50.32Wh energy rating for restored runtime. The pack uses a 4S1P cell configuration with built-in protection against overcharge, over-discharge, over-voltage and short circuits.

Verify your robot model

Confirm the model number printed on your Deebot matches the supported list such as DN622.21, DN622.11, DH45, CEN361, DH35, DH43 or BFG-WSQ. Cross-check the original battery part numbers including ICR18650-26J-4S1P, UR18650ZY-4S1P-AAM and TW4-11. The physical dimensions are 70.1 x 37.1 x 37.1mm and weight is 270.0g for fit verification.

Certified safety standards and direct-fit design

The battery carries ISO9001, RoHS, CE, UN38.3 and MSDS certifications for compliance and transport safety. No additional software, cables or mounting hardware are included in the single-pack package. Installation relies on the existing connector and compartment in the robot. Buyers needing multi-pack bundles or external chargers should look elsewhere.

Highlights

  • Exact-spec replacement fits original battery dimensions
  • 8 V 3400 mAh capacity restores full run-time
  • Built-in overcharge, over-discharge, over-voltage and short-circuit protection
  • Certified to ISO 9001, RoHS, CE, UN38.3 and MSDS standards
  • Compatible with Deebot N79, N79S, DN622, DN620, DH45, DH43, DH35, CEN360, CEN361 and Mirror models

Specifications

TypeBatteries
Battery Pack1-pack
Battery TypeLithium
Battery Capacity3000mAh
Battery Voltage14.8

Questions about this item

Does the package include any cables or a charger, or must those be purchased separately?

The listing describes a single lithium battery pack weighing 270.0 g with dimensions 70.1 x 37.1 x 37.1 mm; no cables or charger are mentioned.

Which voltage and capacity combination matches the original Deebot N79 specification?

The replacement is rated at 14.8 V and 3400 mAh (50.32 Wh), matching the original battery voltage and offering a higher capacity than the 3000 mAh reference.

How long will the 3400 mAh rating actually run a Deebot N79S before recharge?

At 14.8 V the pack stores 50.32 Wh; typical Deebot cleaning draws roughly 20–30 W, so expect about 1.5–2.5 hours of run time per full charge.

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