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A rectangular black charger with four battery slots and one silver battery inserted

Kastar

Kastar NP-BK1 battery and quadruple charger 1 pack

SKU CH-N3GY-X6N3N

A 1200 mAh lithium-ion battery with a quadruple USB charger that powers four cells at once from Micro-USB or Type-C inputs

  • Total capacity4.32 Wh
  • Pack contents1 Charger + 1 Battery
  • 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
  • 1200 mAh Li-Ion battery powers compatible Sony cameras
  • Quadruple USB charger fills four batteries simultaneously
  • Micro-USB and Type-C inputs with Type-C cable included
  • Intelligent display shows charging status and capacity level
  • 32 Wh pack measures 3.5 by 2 by 2.5 Inch

Compatible Sony cameras

The Kastar NP-BK1 kit supplies a 3.7 V lithium-ion cell rated at 1200 mAh plus a compact charger that fits Sony Bloggie MHS-CM5, MHS-PM5, Webbie MHS-PM1 and Cyber-shot DSC-S750, S780, S950, S980, W180, W190 and W370 models. It replaces Sony NP-BK1 and NP-FK1 batteries and works with the BC-CSK charger.

Quadruple USB charging limits

The charger accepts 5 V input through Micro-USB or USB-C and delivers 4.2 V at 800 mA for one or two cells, dropping to 500 mA each when three or four batteries are loaded. Total input power is capped at 15 W, so simultaneous charging slows as more slots are filled.

Capacity and practical headroom

The 4.32 Wh cell powers compatible compacts for typical daily shooting, but extended video sessions on Bloggie or Webbie models will drain it faster. Swapping fresh cells from the four-bay charger keeps the camera running, though the 500 mA per bay rate means a full recharge cycle takes several hours.

How it compares

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

Price $14.99
Cheaper than about 60% of the 5,900 comparable items (median $17.99).

Specifications

Product
Brand nameKastar
Model nameNP-BK1
Part numberLHD4-1B-BK1-B
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 + 1 Battery

Other versions of this model

5 more in the same range

Questions about this item

Should I choose the single-battery pack or a multi-battery bundle?

This listing supplies one 1200 mAh NP-BK1 battery plus a charger that can handle four cells at once, so you can add extra batteries later without buying another charger.

What does the 4.32 Wh rating mean for actual shooting time?

At 3.7 V and 1200 mAh the cell stores 4.32 Wh, which typically powers a compatible Cyber-shot or Bloggie for roughly the same number of shots as the original Sony NP-BK1.

How fast does the USB-C or Micro-USB input charge four batteries?

The charger draws 5 V at up to 3 A (15 W) and delivers 800 mA to one or two slots or 500 mA to three or four slots simultaneously.

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