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Four rectangular lithium-ion camera batteries in a flat pack

Kastar

Kastar LI-42B 4-pack camera battery 1400mAh 3.7V 5.18Wh

SKU CH-MKV6-T6DZC

Four 1400mAh lithium-ion cells replace Panasonic N4FUYYYY0018, 19, 46, 47 packs with over-charge and over-heat protection

  • TypeBattery
  • Pack4 Batteries
  • ChemicalLi-Ion
  • Capacity5.18 Wh
  • Dimensions3*2*3 Inch
  • FeaturesHigh Capacity and Manufacture Price.
  • Longer shooting sessions with 1400mAh capacity
  • Reliable power at 3.7V lithium-ion voltage
  • Safe operation backed by UL1642 and CE standards
  • Built-in protection against over-charge and over-heating
  • Four-pack covers Panasonic KX-TCA285 and KX-UDT121 handsets

Four-pack replacement batteries

Kastar LI-42B cells deliver 1400mAh at 3.7V for Panasonic handsets. The 4-battery set covers Panasonic part numbers N4FUYYYY0018, N4FUYYYY0019, N4FUYYYY0046 and N4FUYYYY0047. Each lithium-ion unit stores 5.18Wh of energy for extended talk and standby time.

Compatibility with listed Panasonic models

These batteries fit the KX-TCA285, KX-TCA385, KX-UDT121, KX-UDT131, Attune II HD3, WX-CH455, WX-SB100, WX-ST100 and WX-ST300 handsets. They replace the original packs without modification. Buyers whose devices use a different part number will need an alternative battery.

Built-in protection and thermal behaviour

UL1642 and CE certified cells include over-charge, over-discharge, over-voltage, over-current and over-heating circuits. The safeguards limit temperature rise during normal charging and discharging. No active cooling is required in typical handset operation.

Highlights

  • Longer shooting sessions with 1400mAh capacity
  • Reliable power at 3.7V lithium-ion voltage
  • Safe operation backed by UL1642 and CE standards
  • Built-in protection against over-charge and over-heating
  • Four-pack covers Panasonic KX-TCA285 and KX-UDT121 handsets

Specifications

BrandKastar
ModelLI-42B
Part NumberBA-4B-PS42B-A
TypeBattery
Pack4 Batteries
ChemicalLi-Ion
Capacity5.18 Wh
Dimensions3*2*3 Inch
FeaturesHigh Capacity and Manufacture Price.

Other versions of this model

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Questions about this item

How long will the 1400 mAh capacity actually run my handset?

The 1400 mAh lithium-ion cell delivers 5.18 Wh at 3.7 V, giving extended talk and standby time on compatible Panasonic DECT handsets such as the KX-TCA285 or KX-UDT121.

What charging standard does the LI-42B use and what protection limits apply?

The pack uses a single-cell Li-ion CC/CV profile with built-in over-charge, over-discharge, over-voltage, over-current and over-heating protection circuits certified to UL1642 and CE.

Will the 3 x 2 x 3 inch dimensions fit my Panasonic Attune II HD3 battery compartment?

The LI-42B matches the original Panasonic N4FUYYYY0018 form factor, so it fits the Attune II HD3, WX-ST300 and all other listed handsets without modification.

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