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Rectangular lithium-ion battery pack with wire connector, dark blue wrap, 66 by 37 by 19 mm

Cameron Sino Battery for Eufy Security C210 SoloCam SW18650 34M 2P 6700mAh 24.79Wh wireless surveillance

SKU CH-K9WJ-FY6A9

Replacement Li-ion battery with 6700 mAh capacity for Eufy Security C210 SoloCam and compatible doorbell models

  • Product weight123
  • Replacement battery for Eufy Security C210 SoloCam
  • 6700mAh capacity provides 24.79Wh of energy
  • Built-in protection against overcharge and short circuit
  • Dimensions 66.50 x 37.40 x 19.50mm fit original slot
  • Weighs 98.0g for easy handling during installation

Replacement Battery for Eufy Security C210 SoloCam

This lithium-ion pack is built to match the original power source for Eufy Security C210 SoloCam and several related models including 2C Pro indoor Camera, 2C Security Camera, 2C Wireless Door Camera, 2K Wireless Door Camera, SoloCam E40, TB210 and Video Doorbell 2k. It suits owners who need a fresh cell for an existing device.

Capacity and voltage: 6700 mAh at 7.4 V

The decisive specification is the 6700 mAh capacity combined with a 7.4 V output, delivering 24.79 Wh of energy. Buyers who require a different capacity or voltage for their specific camera variant will find this pack incompatible and should verify the original part number before ordering.

Straightforward swap with a decoded chip

The pack includes a fully decoded chip that communicates with the camera exactly like the factory unit, so installation typically involves opening the battery compartment, disconnecting the old connector and seating the new one. The most common issue is a loose or misaligned connector; ensuring it clicks securely into place avoids a no-power condition after reassembly.

How it compares

Measured against everything we stock in Wi-Fi Security Cameras, at today’s prices. Recalculated every night.

Price $16.99
Cheaper than about 95% of the 385 comparable items (median $52.99).

Specifications

Product
Brand nameCameron Sino
Model name2C Pro indoor Camera, 2C Security Camera, 2C Wireless Door Camera, 2K Wireless Door Camera, Security C210 SoloCam, SoloCam E40, TB210, Video Doorbell 2k
Part numberSW18650 34M 2P

Questions about this item

How long will the 6700mAh capacity actually run my C210 SoloCam between charges?

The 6700mAh / 24.79Wh rating matches the original battery, so runtime will be the same as when the camera was new; exact days depend on motion activity, recording length and Wi-Fi signal strength.

The spec lists both 7.4V and 3.70V — which voltage does the camera actually use?

The pack is a 2-cell (2P) 18650 design giving a nominal 7.4V output, which is the voltage the C210 SoloCam expects; 3.70V is the single-cell reference value.

Will the 66.50 x 37.40 x 19.50mm dimensions fit inside my SoloCam E40 without forcing the cover?

Yes — those are the exact dimensions of the original Eufy pack, so the battery slides into the C210 SoloCam, SoloCam E40 and listed 2C models without modification.

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