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Kastar PS-42B lithium-ion battery and foldable AC wall charger kit

Kastar

Kastar PS-42B Battery & Charger Kit 1400mAh 3.7V

SKU CH-RSDE-YDG09

Replacement lithium-ion battery and AC wall charger kit for Panasonic Attune drive-thru headsets

  • Total capacity5.18 Wh
  • Pack contents1 Charger + 1 Battery
  • Battery chemistryLi-Ion
  • Product typeBattery & Charger
  • Product dimensions3 × 2 × 2 in
  • Key featuresFoldable Flat Plug
  • 1400 mAh lithium-ion cell powers compatible Panasonic headsets
  • AC 100–240 V input works worldwide without a separate adapter
  • Foldable flat plug folds away for compact storage
  • LED shows red while charging and green when full
  • Charger delivers 4.2 V at 600 mA for safe Li-ion charging

Replacement Kit for Drive-Thru Headsets

This Kastar PS-42B kit supplies a lithium-ion battery and an AC wall charger for Panasonic Attune and WX-series drive-thru communication headsets. The pack contains one 3.7 V, 1400 mAh cell rated at 5.18 Wh and a compact charger with a foldable flat plug. It is intended for operators who need a direct replacement power source for compatible headset models.

Steady Charging Behaviour

The charger accepts 100 to 240 V AC at 50 to 60 Hz and delivers a regulated 4.2 V DC at 600 mA output. A red LED illuminates while the battery is charging and switches to green once the cell reaches full capacity or enters standby. This constant-current profile is designed for overnight or shift-change recharging rather than rapid top-ups.

Compatibility Check Before Ordering

Verify that your headset is one of the listed Panasonic models: Attune, Attune 3020, Attune 3050, Attune I, Attune II, Attune II HD3, WX-CH455, WX-SB100 or WX-ST100. The kit will not fit headsets that use a different battery form factor or voltage. Buyers who need a multi-bay charger or a higher-capacity cell should look elsewhere.

How it compares

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

Price $11.99
Cheaper than about 75% of the 5,900 comparable items (median $17.99).

Specifications

Product
Brand nameKastar
Model namePS-42B
Part numberNOCAR-1B-PS42B-P
Total capacity5.18 Wh
Product typeBattery & Charger
Power
Battery chemistryLi-Ion
Size & build
Product dimensions3 × 2 × 2 in
In the box
Pack contents1 Charger + 1 Battery

Other versions of this model

5 more in the same range

Questions about this item

Does the AC wall charger generate noticeable heat or noise while charging the 1400 mAh battery all day?

The charger runs silently with no fan and its foldable flat plug stays cool during the 4.2 V 600 mA charge cycle.

What equipment must I already own for this kit to work?

You need one of the listed Panasonic Drive-Thru headsets such as the Attune 3020, Attune 3050, Attune I, Attune II, Attune II HD3, WX-CH455, WX-SB100 or WX-ST100.

Will the 3.7 V 1400 mAh battery fit and charge correctly in an older Attune 3020 headset I still use?

Yes, the PS-42B cell matches the original voltage and capacity for all compatible Attune and WX-series models.

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