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A rectangular lithium-ion battery and a compact dual-slot USB charger with an LCD screen

Kastar

Kastar NP-FM50 Battery & LTD2 USB Charger 1-Pack

SKU CH-RFRZ-B88FH

A Li-Ion battery and dual USB charger compatible with many Sony camcorders and cameras

  • Total capacity17.02 Wh
  • Pack contents1 Charger + 1 Battery
  • Battery chemistryLi-Ion
  • Product typeBattery & Charger
  • Product dimensions5 × 3 × 2 in
  • Key featuresLCD USB Dual charger, can charge 2 batteries at the same tim
  • 2300 mAh lithium-ion cell powers extended recording sessions
  • LCD dual charger shows real-time charge level for each battery
  • Charges two NP-FM50 packs simultaneously via USB-C or Micro-USB
  • 5 V 2–3 A input keeps the charger compact for travel
  • Compatible with dozens of Sony Handycam and Cyber-shot models

Replacement battery and dual charger

The Kastar NP-FM50 pack supplies a 2300mAh lithium-ion cell rated at 17.02Wh and a USB charger that can power two batteries together. It targets owners of older Sony Handycam and Cyber-shot models who need a fresh power source for continued shooting.

Interchangeable plate and USB inputs

The charger accepts Micro-USB or USB-C at 5V 2-3A and shows charge level and capacity on an LCD. Its swappable plate design lets the same unit handle many Sony NP-FM and NP-QM battery types without extra adapters.

Compact build with dual-bay convenience

Measuring roughly five by three by two inches, the unit fits easily in a gear bag and delivers 8.4V at 800mA per bay. The dual-slot layout means a spare can charge while the camera runs on the other, reducing downtime on location.

How it compares

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

Price $13.99
Cheaper than about 65% of the 5,900 comparable items (median $17.99).

Specifications

Product
Brand nameKastar
Model nameNP-FM50
Part numberCH-LTD2-1B-FM50-H
Total capacity17.02 Wh
Product typeBattery & Charger
Power
Battery chemistryLi-Ion
Size & build
Product dimensions5 × 3 × 2 in
In the box
Pack contents1 Charger + 1 Battery

Other versions of this model

5 more in the same range

Questions about this item

When will the NP-FM50 lithium-ion cell need replacing?

The 2300 mAh cell degrades with each charge cycle; after several hundred full cycles run-time drops noticeably and a new battery restores original capacity.

What stops the LTD2 charger from running continuously?

The 8.4 V 800 mA output per slot limits sustained current; the charger will not push more than that even if left on all day.

How warm does the charger get when both slots are used for hours?

With 5 V 2-3 A input and dual 800 mA outputs the unit stays only slightly warm during extended charging sessions.

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