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Four rectangular lithium-ion camera batteries in light blue wrap

Kastar

Kastar LI-42B 4-pack camera battery 3.7V 1400mAh

SKU CH-A3QF-670TC

Four lithium-ion batteries rated 3.7 V and 1400 mAh replace Panasonic handset packs for DECT models including KX-TCA285, KX-TCA385, KX-UDT121 and KX-UDT131

  • Total capacity5.18 Wh
  • Pack contents4 Batteries
  • Battery chemistryLi-Ion
  • Product typeBattery
  • Product dimensions3 × 2 × 3 in
  • Key featuresHigh Capacity and Manufacture Price.
  • Keeps your handset running longer with 1400 mAh lithium-ion capacity
  • Four batteries in one pack so spares are always ready
  • Built-in protection against over-charge over-discharge over-voltage over-current and over-heating
  • Meets UL 1642 and CE safety standards for reliable daily use
  • Direct replacement for Panasonic N4FUYYYY0018 N4FUYYYY0019 N4FUYYYY0046 N4FUYYYY0047

Compatible Panasonic Handsets

This four-pack of Kastar LI-42B lithium-ion cells replaces the original power packs in Panasonic KX-TCA285, KX-TCA385, KX-UDT121, KX-UDT131, Attune II HD3, WX-CH455, WX-SB100, WX-ST100 and WX-ST300 DECT handsets. Each unit delivers 3.7V and 1400mAh for extended talk and standby time.

Installation Requirements

The batteries slot directly into the handset battery compartment without adapters or soldering. They free the user from hunting for single replacements and keep spare units on hand for multi-handset offices or homes.

Safety and Power Characteristics

Built-in protection guards against over-charge, over-discharge, over-voltage, over-current and over-heating. The cells meet UL1642 and CE standards and store 5.18 Wh each for reliable daily operation.

How it compares

Measured against everything we stock in Camera Batteries, Grips & Chargers, at today’s prices. Recalculated every night.

Price $21.99
Pricier than about 65% of the 5,900 comparable items (median $17.99).

Specifications

Product
Brand nameKastar
Model nameLI-42B
Part numberBA-4B-PS42B-B
Total capacity5.18 Wh
Product typeBattery
Power
Battery chemistryLi-Ion
Size & build
Product dimensions3 × 2 × 3 in
In the box
Pack contents4 Batteries

Other versions of this model

5 more in the same range

Questions about this item

How long will the 1400 mAh capacity last under continuous talk time?

Each 3.7 V 1400 mAh cell delivers 5.18 Wh, giving extended talk and standby time on compatible DECT handsets.

Do the batteries overheat or make noise during all-day charging cycles?

Built-in protection against over-charge, over-discharge, over-voltage, over-current and over-heating keeps cells cool and silent.

Which Panasonic handset models must I already own for these replacements to fit?

Compatible with KX-TCA285, KX-TCA385, KX-UDT121, KX-UDT131, Attune II HD3, WX-CH455, WX-SB100, WX-ST100 and WX-ST300 handsets.

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