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Two rectangular lithium-ion camera batteries in a pack

Kastar

Kastar LI-42B 2-pack camera battery for Panasonic N4FUYYYY0018 0019 0046 0047

SKU CH-HA7F-H4RN0

Two 3.7 V lithium-ion packs deliver 1400 mAh each for Panasonic cordless handsets

  • Total capacity5.18 Wh
  • Pack contents2 Batteries
  • Battery chemistryLi-Ion
  • Product typeBattery
  • Product dimensions3 × 2 × 2 in
  • Key featuresHigh Capacity and Manufacture Price.
  • Longer shooting sessions with 1400mAh high-capacity lithium-ion cells
  • Reliable power at 3.7V for compatible Panasonic handsets
  • Built-in protection circuit guards against over-charge and over-heating
  • Two batteries included so a spare is always ready
  • Meets UL1642 and CE safety standards for peace of mind

Panasonic cordless handset power

This two-pack of Kastar LI-42B lithium-ion batteries replaces Panasonic part numbers N4FUYYYY0018, N4FUYYYY0019, N4FUYYYY0046 and N4FUYYYY0047. Each cell delivers 3.7 V and 1400 mAh for 5.18 Wh of capacity. They are built for Panasonic KX-TCA285, KX-TCA385, KX-UDT121, KX-UDT131, Attune II HD3, WX-CH455, WX-SB100, WX-ST100 and WX-ST300 handsets.

Safety and daily handling

The pack meets UL1642 and CE standards and includes over-charge, over-discharge, over-voltage, over-current and over-heating protection circuits. Two batteries let you keep one charging while the other powers the handset, reducing downtime on busy shifts. The cells arrive new and ready for the existing charger cradle on each supported model.

Check your handset model

Confirm the handset model number matches one of the listed Panasonic devices before ordering. Verify the original battery part number printed on the old cell corresponds to the four N4FUYYYY codes above. These batteries are not suited for cameras or other equipment that uses a different form factor or voltage.

How it compares

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

Price $12.99
Cheaper than about 70% of the 5,900 comparable items (median $17.99).

Specifications

Product
Brand nameKastar
Model nameLI-42B
Part numberBA-2B-PS42B-A
Total capacity5.18 Wh
Product typeBattery
Power
Battery chemistryLi-Ion
Size & build
Product dimensions3 × 2 × 2 in
In the box
Pack contents2 Batteries

Other versions of this model

5 more in the same range

Questions about this item

What voltage does the LI-42B battery deliver and what capacity does that provide?

Each battery supplies 3.7 V and 1400 mAh, giving 5.18 Wh of energy for extended camera run time.

Which Panasonic handset models accept the LI-42B pack?

The pack fits the KX-TCA285, KX-TCA385, KX-UDT121, KX-UDT131, Attune II HD3, WX-CH455, WX-SB100, WX-ST100 and WX-ST300.

How do I install the batteries and what common mistake should I avoid?

Open the handset battery door, match the contacts to the polarity marks, insert the pack and close the latch; the step often missed is ensuring the contacts click fully into place.

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