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Four small rectangular batteries and a compact charger with four slots

Kastar

Kastar NP-BY1 4-pack battery and charger 4.07 Wh

SKU CH-PJPE-5HNEB

Four lithium-ion batteries and a quadruple USB charger with Micro-USB and Type-C inputs, delivering 4.07 Wh per cell

  • Total capacity4.07 Wh
  • Pack contents1 Charger + 4 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
  • Quadruple charger powers four batteries simultaneously
  • Lithium-ion cells deliver 4.07 Wh capacity
  • Micro-USB and Type-C inputs offer flexible charging
  • Intelligent display shows charging status and capacity
  • Compatible with Sony NP-BY1 and Pentax D-LI78 models

NP-BY1 four-battery kit

The Kastar NP-BY1 bundle supplies four lithium-ion cells rated at 4.07 Wh each plus a compact charger that fits in a camera bag. It targets owners of Sony HDR-AZ1, Pentax Optio or Ricoh R50 models who need spare power for long shoots or travel.

Quadruple USB charger with dual inputs

The charger accepts Micro-USB or USB-C at 5 V 2–3 A and can charge all four batteries simultaneously. An intelligent display shows individual charging status and remaining capacity so users can swap cells without guesswork.

Replaces single OEM chargers and loose cells

Swapping a stock single-slot charger for this unit removes the bottleneck of topping up one battery at a time. The upgrade is worthwhile when a day of recording demands more than one full charge cycle.

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 nameNP-BY1
Part numberLHD4-4B-BY1-B
Total capacity4.07 Wh
Product typeBattery & Charger
Power
Battery chemistryLi-Ion
Size & build
Product dimensions3.5 × 2 × 2.5 in
In the box
Pack contents1 Charger + 4 Batteries

Other versions of this model

5 more in the same range

Questions about this item

Does the charger use USB-C or Micro-USB input, and what current does it draw?

The charger accepts 5 V 2–3 A through either Micro-USB or USB-C, drawing up to 15 W from the source.

What are the overall dimensions of the 4-pack kit?

The package measures 3.5 × 2 × 2.5 inches, small enough to fit in most camera bags.

How do you charge four batteries at once without overloading the charger?

Insert all four cells; the charger automatically drops each bay to 500 mA when three or four are present.

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