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Four small rectangular lithium-ion batteries and a compact black charger with four slots and USB ports

Kastar

Kastar 4-Pack NP-BY1 Battery & Quadruple Charger

SKU CH-M5K9-3BGBK

Four lithium-ion batteries and a compact charger that powers four cells simultaneously via Micro-USB or USB-C

  • 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
  • Charge four batteries simultaneously with the quadruple USB charger
  • 1100 mAh lithium-ion cells deliver 4.07 Wh for extended shooting
  • Intelligent display shows real-time charging status and capacity
  • Micro-USB and USB-C inputs offer flexible power options
  • Compatible with Sony, Pentax, Ricoh and Sanyo cameras and chargers

4-Pack Li-Ion Batteries with Quad USB Charger

This set includes four 3.7 V lithium-ion cells rated at 1100 mAh each, delivering 4.07 Wh per unit. A compact quadruple charger powers all four simultaneously from a single 5 V 2-3 A source via Micro-USB or Type-C. The charger swaps plates to fit other battery models and shows real-time capacity on its built-in display.

For owners of Sony AZ1.

Photographers using the listed Sony, Pentax, Ricoh or Sanyo models can replace original DB-80, D-LI78 or NP-BY1 packs without mismatch. The bundle suits anyone needing several spares for a day of shooting. Buyers whose cameras require a different voltage or form factor should look elsewhere.

Sustained charging splits current across bays

When one or two batteries are inserted the charger delivers 800 mA per bay; with three or four it drops to 500 mA each to stay within the 15 W input limit. This prevents overheating during extended multi-cell cycles while the intelligent display tracks individual progress.

How it compares

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

Price $18.99
Pricier than about 55% of the 5,900 comparable items (median $17.99).

Specifications

Product
Brand nameKastar
Model nameNP-BY1
Part numberLHD4-4B-BY1-C
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

Which camera models must I already own to use the NP-BY1 batteries?

The batteries fit Sony HDR-AZ1 series, Pentax Optio L50, M50, M60, S1, V20, W60, W80, Ricoh R50 and Sanyo Xacti DMX-E10 or VPC-E10.

Will the quadruple charger still work with my original Sony or Ricoh charger plates?

The charger accepts interchangeable plates so you can swap to the original Sony NP-BY1, Pentax D-BC78, Ricoh BJ-8 or Sanyo DB-L70 plates.

How do I confirm each battery is charging correctly on the intelligent display?

The compact charger shows real-time charging status and capacity for all four slots, with 800 mA output for one or two batteries and 500 mA for three or four.

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