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Two rectangular black lithium-ion camera batteries side by side

Kastar

Kastar NP-FM500H 2-pack 7.4V 2400mAh for Sony Alpha 57 a57 SLT-A57 Alpha 58 a58 SLT-A58 camera battery

SKU CH-0B32-QFQWS

Two 7.4 V 2400 mAh Li-Ion packs replace Sony NP-FM500H batteries for Alpha 57, 58, 65, 68 and 77 series cameras

  • Total capacity17.76 Wh
  • Pack contents2 Batteries
  • Battery chemistryLi-Ion
  • Product typeBattery
  • Product dimensions2.2 × 1.5 × 1.6 in
  • Key featuresHigh Capacity and Manufacture Price.
  • Longer shooting sessions with 2400mAh capacity
  • Two batteries included for extended power
  • UL1642 and CE certified for safety
  • Built-in protection against over-charge and over-heat
  • Compatible with Alpha 57, 58, 65, 68, 77 series

Two-pack replacement batteries

Kastar NP-FM500H lithium-ion cells deliver 7.4 volts and 2400 milliampere-hours each. The pair fits Sony Alpha 57, 58, 65, 68 and 77 series cameras that accept the NP-FM500H form factor. Two batteries let you keep shooting while one charges.

Built-in protection circuits

Each cell includes over-charge, over-discharge, over-voltage, over-current and over-heating safeguards. The pack meets UL1642 and CE safety standards. Compatible Sony chargers such as BC-VM10 and AC-SQ950 can be used without modification.

Check your camera model

Verify that your body appears in the supported list covering Alpha 200 through 900 and SLT-A57 to SLT-A77II. The batteries will not fit models requiring NP-FW50 or other form factors. No charger is included in this pack.

How it compares

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

Price $12.99
Cheaper than about 70% of the 5,900 comparable items (median $17.99).

Specifications

Product
Brand nameKastar
Model nameNP-FM500H
Part numberBA-2B-FM500H-K
Total capacity17.76 Wh
Product typeBattery
Power
Battery chemistryLi-Ion
Size & build
Product dimensions2.2 × 1.5 × 1.6 in
In the box
Pack contents2 Batteries

Other versions of this model

5 more in the same range

Questions about this item

How often will the 2400mAh lithium-ion cells need replacing under normal use?

Lithium-ion packs typically last several hundred charge cycles; capacity gradually drops, so plan on new batteries when run time becomes too short for your shooting sessions.

What stops the 7.4V 2400mAh packs from delivering full power during long bursts?

The built-in protection circuit cuts output if temperature, voltage or current exceed safe limits, so sustained high-drain shooting may trigger a temporary shutdown.

Do the batteries get hot or draw extra power when left in the camera all day?

Self-discharge is very low; the packs stay cool in standby and only warm slightly during active shooting thanks to the over-heating protection circuit.

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