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Rectangular black charger with LCD screen and two battery slots, Micro-USB and Type-C ports

Kastar

Kastar NP-FW50 LTD2 USB Charger for Sony RX10M3 RX10 IV RX10M4 ILCE-3000 alpha 3000

SKU CH-9DG5-JW3VS

Dual-slot USB charger powers two Sony NP-FW50 batteries simultaneously with LCD status and Micro-USB or Type-C input

  • TypeCharger
  • Pack1 Charger
  • ChemicalNoMEM Li-Ion
  • CapacityNo Battery
  • Dimensions5*3*1 Inch
  • FeaturesLCD USB Dual charger, can charge 2 batteries at the same tim
  • Charges two NP-FW50 batteries simultaneously
  • LCD screen shows charge level for each battery
  • USB-C and Micro-USB inputs for flexible power sources
  • Compact 5×3×1 inch design fits in any bag
  • 4 V 800 mA output safely charges Li-Ion cells

Dual USB charger for Sony NP-FW50

This Kastar charger powers two Sony NP-FW50 batteries simultaneously from a single USB source. It accepts Micro-USB or USB-C input at 5 V and up to 3 A, making it compatible with common power banks and wall adapters. Photographers using Sony Alpha or Cyber-shot bodies can keep both batteries topped up without a proprietary AC dock.

Thermals noise and power draw

The unit draws a maximum of 15 W from the USB supply and delivers 8.4 V at 800 mA per slot. No fan is present, so operation is silent and heat remains low during typical charging cycles. The LCD panel shows real-time capacity for each bay without adding audible noise.

Sustained load behaviour

When both bays are occupied the charger maintains 800 mA to each battery continuously until termination. The intelligent controller balances current and prevents overcharge during extended sessions. No throttling or thermal shutdown occurs under normal ambient conditions. Buyers who need to charge more than two batteries at once will require an additional unit.

Highlights

  • Charges two NP-FW50 batteries simultaneously
  • LCD screen shows charge level for each battery
  • USB-C and Micro-USB inputs for flexible power sources
  • Compact 5×3×1 inch design fits in any bag
  • 4 V 800 mA output safely charges Li-Ion cells

Specifications

BrandKastar
ModelNP-FW50
Part NumberCH-LTD2-0B-FW50-K
TypeCharger
Pack1 Charger
ChemicalNoMEM Li-Ion
CapacityNo Battery
Dimensions5*3*1 Inch
FeaturesLCD USB Dual charger, can charge 2 batteries at the same time

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Questions about this item

How do I power the Kastar NP-FW50 LTD2 charger and what step is easy to miss?

Connect a 5V 2-3A USB source to either the Micro-USB or Type-C port; the step people miss is using a supply below 2A, which prevents dual-bay charging at the full 800mA per slot.

What part will need replacement first on the Kastar NP-FW50 LTD2 charger?

The interchangeable battery plate wears out before the main board; when contacts loosen, swap only the plate instead of the whole unit.

What thermal or current limit appears first during a long dual-bay charge on the Kastar NP-FW50 LTD2?

The 15W input ceiling caps combined output at 8.4V 800mA per bay, so sustained dual charging hits the power-budget limit before temperature does.

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