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Four rectangular black lithium-ion camera batteries in a pack

Kastar

Kastar NP-FM500H 4-Pack 7.4V 2400mAh for Sony Alpha 77II a77V SLT-A77VK SLT-A77VM SLT-A77VQ camera battery

SKU CH-9SVA-AK0ZB

Four lithium-ion batteries deliver 7.4V 2400mAh each for Sony Alpha and SLT cameras

  • TypeBattery
  • Pack4 Batteries
  • ChemicalLi-Ion
  • Capacity17.76 Wh
  • Dimensions2.2*3*1.6 Inch
  • FeaturesHigh Capacity and Manufacture Price.
  • Longer shooting sessions with 2400mAh high-capacity cells
  • Four batteries in one pack for extended power
  • UL1642 and CE certified for safe operation
  • Built-in protection against over-charge and over-heating
  • Compatible with Alpha 77II, Alpha 99 and many Sony models

Four-Battery Pack for Sony Alpha SLT Cameras

This pack supplies four lithium-ion cells rated at 7.4 volts and 2400 milliampere-hours each, delivering 17.76 watt-hours per unit. They are built as direct replacements for the Sony NP-FM500H battery used across a wide range of Alpha and SLT bodies. The cells carry UL1642 and CE safety markings and include integrated protection against over-charge, over-discharge, over-voltage, over-current and over-heating.

Built-In Protection Circuits Extend Usable Life

Each battery incorporates a protection circuit that guards against the five fault conditions listed above, reducing the risk of damage to both the cell and the camera. The supplier notes that this design helps improve cycle life compared with lower-quality replacements, meaning the pack can sustain more charge-discharge cycles before capacity drops off. No separate charger is included; the batteries work with the Sony BC-VM10 and AC-SQ950 chargers already owned by the user.

Capacity Suited to Long Shooting Sessions

At 2400 milliampere-hours per cell, the four-pack provides enough combined capacity for extended stills or video work on compatible models such as the Alpha 77 II, Alpha 99 and SLT-A77 series. Photographers who need all-day power without swapping cells will find the headroom adequate, while users requiring even longer runtimes or higher burst rates may need additional packs or higher-capacity alternatives.

Highlights

  • Longer shooting sessions with 2400mAh high-capacity cells
  • Four batteries in one pack for extended power
  • UL1642 and CE certified for safe operation
  • Built-in protection against over-charge and over-heating
  • Compatible with Alpha 77II, Alpha 99 and many Sony models

Specifications

BrandKastar
ModelNP-FM500H
Part NumberBA-4B-FM500H-N
TypeBattery
Pack4 Batteries
ChemicalLi-Ion
Capacity17.76 Wh
Dimensions2.2*3*1.6 Inch
FeaturesHigh Capacity and Manufacture Price.

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Questions about this item

How many charge cycles can the 2400mAh Li-Ion cells handle before replacement?

The built-in protection against over-charge, over-discharge and over-heating extends cycle life, so the 7.4V 2400mAh packs last longer than unprotected replacements.

What limits continuous shooting time on the Alpha 77II with these 17.76 Wh batteries?

The 2400mAh capacity sets the runtime ceiling; sustained high-drain bursts drain the 7.4V cells faster than lighter use.

Do the NP-FM500H packs run hot or draw extra power during all-day video on an SLT-A77V?

The over-heating protection circuit keeps temperature in check, and the 7.4V 2400mAh chemistry maintains stable output without excess draw.

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