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Three lithium-ion batteries and a compact LCD USB charger with three slots

Kastar

Kastar LI-42B 3-pack battery and LCD triple USB charger

SKU CH-3ZS9-E9PPN

Three 1400 mAh lithium-ion batteries and a triple USB charger with LCD status display

  • 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
  • Three 1400 mAh Li-Ion batteries power compatible devices
  • LCD triple charger shows status and capacity for each cell
  • Charges three batteries simultaneously from any 5 V 2 A USB source
  • 2 V 0.5 A per channel output suits Li-Ion charging profile
  • Works with Panasonic DECT handsets and listed part numbers

Three-battery kit with LCD charger

This Kastar LI-42B pack includes three lithium-ion batteries and a triple USB charger that powers all three at once. Each cell delivers 3.7V and 1400mAh for compatible Panasonic handsets. The bundle suits offices or homes that need spare power for several cordless phones.

Charger draws 5V 2A input with 4.2V 0.5A per slot

The LCD charger accepts 5V 2A from a wall adapter, car charger or computer USB port and feeds each bay 4.2V at 0.5A. An intelligent display shows real-time charging status and remaining capacity for every battery. No fan or active cooling is mentioned in the specifications.

Micro USB cable included for flexible power sources

A Micro USB cable ships in the box so the charger can run from any standard USB-A source without extra purchases. The LCD readout removes guesswork by reporting individual cell progress. Buyers who need a single-bay charger or a different battery chemistry are not served by this kit.

How it compares

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

Price $21.99
Pricier than about 65% of the 5,900 comparable items (median $17.99).

Specifications

Product
Brand nameKastar
Model nameLI-42B
Part numberCH-LED3-3B-PS42B-D
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

How do I install the batteries in the triple charger and what step do people get wrong?

Insert each LI-42B cell into a slot matching the contacts; the step often missed is using a 5V 2A USB source so all three bays receive 4.2V 0.5A simultaneously.

What maintenance or replacement will the LI-42B batteries need later?

Lithium-Ion cells degrade with cycles; expect to replace the 1400mAh packs when runtime drops below usable levels for your Panasonic KX-TCA285 or KX-UDT121 handsets.

What limit appears first under sustained charging of all three batteries?

The charger’s 10W input ceiling caps combined output at 4.2V 0.5A per bay, so total current cannot exceed the supply rating during prolonged use.

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