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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

  • Total capacityNo Battery
  • Pack contents1 Charger
  • Battery chemistryNoMEM Li-Ion
  • Product typeCharger
  • Product dimensions5 × 3 × 1 in
  • Key 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.

How it compares

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

Price $7.99
Cheaper than about 90% of the 5,900 comparable items (median $17.99).

Specifications

Product
Brand nameKastar
Model nameNP-FW50
Part numberCH-LTD2-0B-FW50-K
Total capacityNo Battery
Product typeCharger
Power
Battery chemistryNoMEM Li-Ion
Size & build
Product dimensions5 × 3 × 1 in
In the box
Pack contents1 Charger

Other versions of this model

5 more in the same range

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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