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Kastar LI-42B triple USB charger with three lithium-ion batteries, LCD display, micro USB cable

Kastar

Kastar LI-42B 3 Battery & LCD Triple USB Charger Kit

SKU CH-W4BE-NXX45

Three 3.7 V 1400 mAh lithium-ion batteries and an LCD triple USB charger that powers all three simultaneously from any 5 V 2 A USB source

  • Total capacity5.18 Wh
  • Pack contents1 Charger + 3 Batteries
  • Battery chemistryLi-Ion
  • Product typeBattery & Charger
  • Product dimensions3 × 2 × 3 in
  • Key featuresLCD USB Triple charger, can charge 3 batteries at the same t
  • Intelligent LCD shows real-time charging status and battery capacity
  • Triple USB charger powers three batteries simultaneously from one 5V 2A input
  • 1400 mAh lithium-ion cells deliver 5.18 Wh for extended talk time
  • Compatible with Panasonic Attune, Attune II HD3 and KX-TCA285 handsets
  • Micro USB cable lets you charge from wall adapter, car charger or computer

Compatible Panasonic Handset Power Kit

This kit provides three lithium-ion batteries and a triple USB charger for Panasonic Attune and WX series handsets. It suits businesses that need continuous talk time across multiple devices. Each cell delivers 3.7V and 1400mAh capacity. The package replaces original Panasonic part numbers including N4FUYYYY0018 and N4FUYYYY0046.

Check Handset Model and Part Number

Verify your handset appears in the supported list such as KX-TCA285, KX-UDT131 or WX-ST300 before ordering. Confirm the original battery part number matches one of the four Panasonic codes supplied. The charger requires a 5V 2A USB source which is not included in the box. Ensure you have a suitable wall adapter or powered USB port available.

Charger Thermals and Power Draw

The LCD charger operates from a 5V 2A input rated at 10W and outputs 4.2V at 0.5A per slot for three batteries simultaneously. Intelligent LCD panels show real-time charging status and remaining capacity for each cell. The unit draws power from any standard USB wall charger, car adapter or computer port via the included Micro USB cable.

How it compares

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

Price $24.99
Pricier than about 71% of the 5,900 comparable items (median $17.99).

Specifications

Product
Brand nameKastar
Model nameLI-42B
Part numberCH-LED3-3B-PS42B-C
Total capacity5.18 Wh
Product typeBattery & Charger
Power
Battery chemistryLi-Ion
Size & build
Product dimensions3 × 2 × 3 in
In the box
Pack contents1 Charger + 3 Batteries

Other versions of this model

5 more in the same range

Questions about this item

What comes in the Kastar LI-42B kit and what else do I need?

The kit includes one LCD triple USB charger and three 1400mAh lithium-ion batteries. A 5V 2A USB power adapter is required but not included.

Which capacity should I choose for the Panasonic Attune 3020 handset?

Each battery in this kit is rated at 1400mAh and 5.18Wh, matching the original specification for the Attune 3020 and 3050 models.

What does the 5.18Wh rating mean when the battery is inside a KX-TCA285 handset?

At 3.7V the cell stores 5.18Wh, giving the handset its rated talk and standby time; the charger shows exact capacity on its LCD while charging at 4.2V 0.5A per slot.

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