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Four small rectangular batteries and a compact charger with a small screen and three slots

Kastar

Kastar 4-pack LI-42B batteries & LCD triple USB charger

SKU CH-RCD7-KAS1A

Four 1400 mAh lithium-ion batteries with a triple LCD charger that powers three cells simultaneously from any USB source

  • Total capacity5.18 Wh
  • Pack contents1 Charger + 4 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
  • Four 1400 mAh Li-ion batteries deliver 5.18 Wh each
  • Triple USB charger powers three cells simultaneously at 4.2 V 0.5 A
  • LCD screen shows real-time charging status and remaining capacity
  • Runs from any 5 V 2 A USB source with included Micro-USB cable
  • Fits Panasonic Attune, KX-TCA, KX-UDT and WX handset series

Ready-to-use power kit

This pack bundles four lithium-ion cells with a triple-slot LCD charger so a single USB source can refresh three packs at once. Each cell delivers 3.7 V and 1400 mAh for 5.18 Wh of runtime. The bundle suits teams that keep multiple Panasonic handsets on shift rotation.

Replaces single-slot wall adapters

Moving from a one-at-a-time cradle to this triple charger cuts queue time when several units need power between shifts. The jump is worth it when three or more handsets share a charging station and operators cannot wait for sequential cycles.

Handles three simultaneous charges

The charger accepts 5 V 2 A input and feeds 4.2 V 0.5 A to each bay, so three batteries reach full capacity in parallel. A fourth pack must wait for a free slot, and the kit does not support faster chemistries or higher-voltage systems.

How it compares

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

Price $25.99
Pricier than about 72% of the 5,900 comparable items (median $17.99).

Specifications

Product
Brand nameKastar
Model nameLI-42B
Part numberCH-LED3-4B-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 + 4 Batteries

Other versions of this model

5 more in the same range

Questions about this item

What handset models do the 1400 mAh 3.7 V LI-42B cells fit?

They are compatible with Panasonic KX-TCA285, KX-TCA385, KX-UDT121, KX-UDT131, Attune II HD3, WX-CH455, WX-SB100, WX-ST100 and WX-ST300 handsets.

How do I power the LCD triple charger and what cable is included?

Connect the supplied Micro USB cable to any 5 V 2 A USB wall adapter, car charger or computer port; the charger then delivers 4.2 V 0.5 A to each of the three slots.

When should I replace the four LI-42B batteries in my drive-thru headset?

Replace them when the charger’s LCD shows a lower full-charge capacity or when talk time drops noticeably below the original 1400 mAh rating.

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