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Four rectangular grey lithium-ion camera batteries with gold contacts on one end

Kastar

Kastar NP-FM500H 4-pack camera battery 7.4V 2400mAh

SKU CH-M4WB-DK9CV

Four-pack of 7.4V 2400mAh Li-Ion batteries compatible with Sony Alpha DSLR and SLT cameras

  • Total capacity17.76 Wh
  • Pack contents4 Batteries
  • Battery chemistryLi-Ion
  • Product typeBattery
  • Product dimensions2.2 × 3 × 1.6 in
  • Key featuresHigh Capacity and Manufacture Price.
  • Longer shooting sessions from 2400mAh high-capacity cells
  • Safe operation via UL1642 and CE certified protection circuits
  • Ready for many Sony Alpha and DSLR models
  • Four batteries in one pack for extended use
  • 4V 17.76Wh lithium-ion chemistry delivers reliable power

Four-pack replacement for Sony NP-FM500H

This set provides four lithium-ion batteries rated at 7.4 volts and 2400 milliampere-hours each, delivering 17.76 watt-hours per cell. They are built to fit the Sony NP-FM500H form factor and work with the BC-VM10 and AC-SQ950 chargers. The pack suits photographers who need multiple spares for long shooting days without relying on a single original unit.

Upgrade from depleted or missing originals

When the factory battery no longer holds a useful charge or you have only one cell, this four-pack restores full-day shooting capacity and adds redundancy. The jump is worth it if you regularly drain a single battery before you can recharge, or if you travel where mains power is scarce. Built-in protection circuits guard against over-charge, over-discharge, over-voltage, over-current and over-heating.

Handles extended sessions; limited by camera draw

Four cells at 2400 milliampere-hours give comfortable headroom for multi-hour events, studio work or trips away from power. They run out when the camera’s continuous live-view, video recording or heavy flash use pushes current draw beyond what the chemistry can sustain for the rated duration. Not for users who need higher-capacity cells or a different voltage platform.

How it compares

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

Price $22.99
Pricier than about 67% of the 5,900 comparable items (median $17.99).

Specifications

Product
Brand nameKastar
Model nameNP-FM500H
Part numberBA-4B-FM500H-F
Total capacity17.76 Wh
Product typeBattery
Power
Battery chemistryLi-Ion
Size & build
Product dimensions2.2 × 3 × 1.6 in
In the box
Pack contents4 Batteries

Other versions of this model

5 more in the same range

Questions about this item

Will the 2.2 by 3 by 1.6 inch NP-FM500H pack fit my Sony Alpha A550 battery compartment?

Yes, these 7.4 V 2400 mAh Li-Ion cells match the NP-FM500H form factor used by the Alpha A550 and the other listed Sony DSLR and SLT models.

What is the correct way to install the four batteries, and what step do users often miss?

Insert each pack with the contacts facing the camera body until the latch clicks; the step many miss is fully charging all four units on a Sony BC-VM10 or AC-SQ950 charger before first use.

When will the 17.76 Wh cells need replacing, and how can I extend their life?

Expect several hundred charge cycles; store at roughly half charge in a cool place and avoid leaving them on the charger after the over-charge protection engages to maximise lifespan.

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