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Two Kastar LI-42B batteries and a compact LTD2 USB charger with LCD screen

Kastar

Kastar LI-42B 2-Pack Battery & LTD2 USB Charger

SKU CH-4K3Y-WSGJ2

Two 1400 mAh Li-Ion packs and a dual-bay USB charger with Micro-USB and Type-C inputs for Panasonic Attune and WX headsets

  • Total capacity5.18 Wh
  • Pack contents1 Charger + 2 Batteries
  • Battery chemistryLi-Ion
  • Product typeBattery & Charger
  • Product dimensions5 × 3 × 2 in
  • Key featuresLCD USB Dual charger, can charge 2 batteries at the same tim
  • Two 1400 mAh Li-Ion batteries power compatible Panasonic headsets
  • 18 Wh capacity supports extended drive-thru shifts
  • LCD USB dual charger fills both cells simultaneously
  • Micro-USB and Type-C inputs offer flexible power sources
  • Intelligent LED display shows real-time charge status and capacity

Two-Pack Power for Drive-Thru Headsets

This Kastar bundle supplies two LI-42B lithium-ion cells and an LTD2 dual charger for Panasonic Attune and WX-series drive-thru headsets. Each cell delivers 3.7 V and 1400 mAh, giving 5.18 Wh of capacity. The charger powers both batteries together from a single USB source. It suits crews who need spare power ready for every shift.

Capacity and Runtime Limits

A single 1400 mAh pack runs a typical headset through a standard shift before needing a swap. Two packs let one charge while the other works, covering back-to-back periods without downtime. The 5.18 Wh rating means extended heavy transmit use will drain the cell faster, so a third pack helps for double shifts. The charger restores a depleted cell at 800 mA per slot.

Thermals, Noise and Power Draw

The LTD2 charger draws up to 15 W from a 5 V 2-3 A USB supply and outputs 4.2 V at 800 mA per bay. It runs silently with no fan, relying on passive cooling during the charge cycle. An intelligent LED display shows real-time status and remaining capacity for each battery. Micro-USB and Type-C inputs give flexible connection options.

How it compares

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

Price $18.99
Pricier than about 55% of the 5,900 comparable items (median $17.99).

Specifications

Product
Brand nameKastar
Model nameLI-42B
Part numberCH-LTD2-2B-PS42B-P
Total capacity5.18 Wh
Product typeBattery & Charger
Power
Battery chemistryLi-Ion
Size & build
Product dimensions5 × 3 × 2 in
In the box
Pack contents1 Charger + 2 Batteries

Questions about this item

Will the LI-42B batteries work in my existing Panasonic Attune 3020 headset?

Yes, the LI-42B batteries are compatible with the Panasonic Attune 3020, 3050, I, II, II HD3, WX-CH455, WX-SB100 and WX-ST100 headsets.

How do I know the LTD2 charger is charging both batteries correctly?

The intelligent LCD display shows the charging status and battery capacity for each slot while charging.

Does the package include a power adapter for the USB inputs?

The box contains the LTD2 charger, two LI-42B batteries and a Micro-USB cable; a 5V 2-3A USB power adapter is not included.

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