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Two small rectangular batteries and a compact black charger with four slots, Micro-USB and Type-C ports

Kastar

Kastar 2-Pack NP-BK1 Battery & Quadruple Charger

SKU CH-19PB-38SXV

Two 1200mAh lithium-ion batteries and a compact charger that powers four cells at once via Micro-USB or USB-C

  • Total capacity4.32 Wh
  • Pack contents1 Charger + 2 Batteries
  • Battery chemistryLi-Ion
  • Product typeBattery & Charger
  • Product dimensions3.5 × 2 × 2.5 in
  • Key featuresQuadruple USB charger, can charge 4 batteries at the same ti
  • Charge four batteries simultaneously with the quadruple USB charger
  • Swap charging plates to fit different battery types
  • Monitor progress on the intelligent display showing status and capacity
  • Power via Micro-USB or USB-C input with included Type-C cable
  • 1200 mAh lithium-ion cells deliver 4.32 Wh for compatible Sony cameras

What the kit includes

This set provides two replacement lithium-ion batteries rated at 3.7 V and 1200 mAh each, plus a compact charger that can handle up to four cells simultaneously. It is designed for owners of compatible Sony Bloggie, Cyber-shot and Webbie cameras who need spare power for extended shooting sessions.

Sustained charging behaviour

The charger accepts 5 V input at 2 to 3 A (15 W) via Micro-USB or USB-C and delivers 4.2 V at 800 mA when one or two batteries are inserted, dropping to 500 mA per slot with three or four cells. Intelligent circuitry shows the charging status and remaining capacity for each bay during the full cycle.

Thermals, noise and power draw

No moving parts are present, so operation is silent and heat output stays low under normal indoor use. The unit draws a maximum of 15 W from the USB supply, and its small 3.5 by 2 by 2.5 inch footprint keeps desk clutter to a minimum.

How it compares

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

Price $16.99
Typical for this category: the median of 5,900 items is $17.99.

Specifications

Product
Brand nameKastar
Model nameNP-BK1
Part numberLHD4-2B-BK1-A
Total capacity4.32 Wh
Product typeBattery & Charger
Power
Battery chemistryLi-Ion
Size & build
Product dimensions3.5 × 2 × 2.5 in
In the box
Pack contents1 Charger + 2 Batteries

Other versions of this model

5 more in the same range

Questions about this item

Does the charger get hot when charging four batteries at the same time?

The charger draws up to 15 W from a 5 V 2–3 A source and distributes 4.2 V at 800 mA to one or two batteries or 500 mA to three or four, so heat stays low during simultaneous charging.

What power source must I already have to run the quadruple charger?

You need a USB power adapter that can supply 5 V at 2–3 A (15 W) and a Micro-USB or USB-C cable; the kit includes a USB-C cable.

Will these 1200 mAh 3.7 V batteries work in my older Sony Cyber-shot DSC-W370?

Yes, the batteries are compatible with the Sony NP-BK1 / NP-FK1 K-type cells used in the Cyber-shot DSC-W370 and other listed models.

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