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Rectangular grey lithium-ion cell 40 by 31 by 5.9 mm with gold contacts

Cameron Sino 660 mAh 3.7 V Li-ion cell phone battery for KX-TCA285 KX-TCA385 KX-UDT121

SKU CH-1V3A-6QE9Q

A 660 mAh 3.7 V Li-ion replacement battery for KX-TCA285, KX-TCA385 and KX-UDT121 cordless handsets

  • Product type12v
  • Fits KX‑TCA285 KX‑TCA385 KX‑UDT121 handsets
  • 660 mAh 3.7 V Li‑ion chemistry
  • 44 Wh energy rating for talk time
  • Compact 40.00 x 31.10 x 5.90 mm size
  • Light 40 g weight eases pocket carry

Direct replacement for select Panasonic DECT

This Cameron Sino lithium-ion cell matches the original 660 mAh capacity and 3.7 V rating. It fits the KX-TCA285, KX-TCA385, KX-UDT121 and KX-UDT131 handsets as well as part numbers N4FUYYYY0047 and N4FUYYYY0046. The 2.44 Wh energy rating restores factory talk and standby times for daily office or home use.

No extra accessories or software included

The package contains only the bare cell; there are no charging cradles, cables or firmware tools supplied. Users must reuse their existing handset charger and base station. Because the battery is a direct electrical equivalent, no configuration or pairing steps are required after installation.

Simple user-level swap with one common pitfall

The cell slides into the handset battery compartment after removing the cover, aligning the connector tabs with the socket. The only frequent issue is inserting the pack upside-down, which prevents the contacts from mating; the keyed shape makes correct orientation obvious once the cover is off.

How it compares

Measured against everything we stock in Replacement Phone Batteries, at today’s prices. Recalculated every night.

Price $12.99
Cheaper than about 70% of the 868 comparable items (median $14.99).

Specifications

Product
Brand nameCameron Sino
Product line40 × 31.1 × 5.9 mm
Model nameBluetooth Laser Mouse, VGP-BMS77
Part number4-268-590-02, SP60, SP60BPRA9C
Product type12v

Questions about this item

How often will the 660 mAh Li-ion cell need replacing?

The 660 mAh Li-ion cell is new; replace it when run-time drops below your needs.

What limit appears first during long calls on the KX-TCA285?

The 2.44 Wh capacity sets the talk-time ceiling before a recharge is needed.

Does the 3.7 V pack get hot when the handset runs all day?

Normal operation at 3.7 V stays within the cell’s thermal design; no extra cooling is required.

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