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Two rectangular lithium-ion camera batteries with dark grey textured finish and gold contacts

Kastar

Kastar NP-FM50 NP-FM55H 2-Pack 7.4V 2300mAh camera battery

SKU CH-FTWC-JKEVH

Two lithium-ion 7.4 V 2300 mAh packs replace Sony NP-FM and NP-QM series batteries for Handycam and Cyber-shot models

  • Total capacity17 Wh
  • Pack contents2 Batteries
  • Battery chemistryLi-Ion
  • Product typeBattery
  • Product dimensions3 × 2 × 2 in
  • Key featuresHigh Capacity and Manufacture Price.
  • Extended shooting with 2300mAh lithium-ion cells
  • Two batteries included for continuous power swapping
  • Compatible with many Sony Handycam and Cyber-shot models
  • Built-in protection against over-charge and over-heating
  • Meets UL1642 and CE safety standards

Two-Pack Replacement Battery

This two-pack supplies 7.4 V 2300 mAh lithium-ion cells that replace Sony NP-FM and NP-QM series packs. Videographers using compatible Handycam or Cyber-shot models gain a spare without changing chargers.

Upgrade From Lower-Capacity Packs

The 17 Wh rating exceeds the original NP-FM30 and NP-FM50 capacities, so recording time increases noticeably on long shoots. The jump is worth it when a single battery cannot cover an event or travel day.

Drop-In Install With Protected Cells

Each cell includes over-charge, over-discharge, over-voltage, over-current and over-heating circuits that meet UL1642 and CE standards. Insert the pack, charge on a listed BC-VM or BC-V charger, and shoot; the only common issue is forgetting to fully charge both units before a session.

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 NP-FM55H
Part numberBA-2B-FM50-A
Total capacity17 Wh
Product typeBattery
Power
Battery chemistryLi-Ion
Size & build
Product dimensions3 × 2 × 2 in
In the box
Pack contents2 Batteries

Other versions of this model

5 more in the same range

Questions about this item

Will the 3-by-2-by-2-inch pack fit the NP-FM50 slot on my DCR-TRV108?

Each battery measures 3 by 2 by 2 inches and replaces the NP-FM50, so it fits the DCR-TRV108 battery compartment directly.

What is the correct way to charge these 7.4 V 2300 mAh cells, and what mistake should I avoid?

Use a Sony BC-VM50, BC-VM10 or BC-V615 charger; the common error is leaving the pack on a non-listed charger, which can trigger the built-in over-voltage protection.

When should I replace the two Li-ion packs rated at 17 Wh each?

Replace them when run time drops noticeably or the camera reports a low-capacity warning, typically after several hundred full charge cycles.

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