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Four rectangular lithium-ion batteries and a compact wall charger with foldable flat pins

Kastar

Kastar NP-FM50 4-Pack Li-Ion Battery & AC Wall Charger Kit

SKU CH-74QY-5EZAJ

Four lithium-ion batteries and an AC wall charger with foldable plug power compatible Sony camcorders and cameras

  • Total capacity17 Wh
  • Pack contents1 Charger + 4 Batteries
  • Battery chemistryLi-Ion
  • Product typeBattery & Charger
  • Product dimensions3 × 2 × 3 in
  • Key featuresFoldable Flat Plug
  • Four 2300 mAh Li-Ion batteries deliver extended shooting time
  • AC 100–240 V wall charger works worldwide without extra adapters
  • Foldable flat plug folds flat for compact storage in any bag
  • LED shows red while charging and green when batteries are ready
  • Kit replaces Sony NP-FM50 NP-FM55H NP-QM50 NP-FM70 NP-FM90 series cells

Replacement Power Kit for Sony Handycam

The Kastar NP-FM50 kit supplies four lithium-ion batteries and a matching AC wall charger. Each cell delivers 7.4 volts and 2300 milliampere-hours for a total energy rating of 17 watt-hours. The bundle targets owners of compatible Sony Digital8 and MiniDV camcorders who need spare power for long shoots.

Charger Input Limits and Output Rate

The wall unit accepts 100 to 240 volts at 50 to 60 hertz and provides a fixed 8.4-volt, 600-milliampere DC output. That current ceiling means a fully depleted 2300-milliampere-hour pack requires several hours to reach the green-LED full-charge indication. The foldable flat pins help with storage but do not alter the electrical limits.

Simple Drop-In Install With Polarity Check

Batteries slide into the camcorder or charger exactly like the original Sony NP-FM50 units; no tools or firmware steps are needed. The only common issue is inserting a pack backwards, which prevents contact and leaves the charger LED on green. Verifying the notch orientation before pushing avoids that delay.

How it compares

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

Price $23.99
Pricier than about 69% of the 5,900 comparable items (median $17.99).

Specifications

Product
Brand nameKastar
Model nameNP-FM50
Part numberNOCAR-4B-FM50-I
Total capacity17 Wh
Product typeBattery & Charger
Power
Battery chemistryLi-Ion
Size & build
Product dimensions3 × 2 × 3 in
In the box
Pack contents1 Charger + 4 Batteries

Other versions of this model

5 more in the same range

Questions about this item

Should I pick the 4-battery pack or buy single batteries?

The kit includes one charger and four 2300 mAh batteries so you can keep spares charged and swap them without waiting.

What does the 2300 mAh rating mean when I am filming?

Each 7.4 V 2300 mAh cell stores 17 Wh, giving roughly one hour of continuous recording on typical camcorders before a swap is needed.

How does the AC wall charger work and what does its output limit?

The foldable-plug charger accepts 100-240 V AC and delivers 8.4 V at 600 mA, so each battery takes several hours to reach full charge.

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