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Four rectangular lithium-ion camera batteries in light grey finish

Kastar

Kastar NP-FW50 4-pack camera battery 1650mAh 7.2V 11.8Wh

SKU CH-Z4JH-3S2J9

Four lithium-ion batteries rated 1650 mAh, 7.2 V and 11.8 Wh power Sony Alpha and Cyber-shot cameras with built-in over-charge and over-heating protection

  • Total capacity11.8 Wh
  • Pack contents4 Batteries
  • Battery chemistryLi-Ion
  • Product typeBattery
  • Product dimensions3 × 2 × 3 in
  • Key featuresHigh Capacity and Manufacture Price.
  • Longer shooting sessions with 1650 mAh capacity
  • Four batteries included for extended backup power
  • Safe operation backed by UL1642 and CE standards
  • Built-in protection against over-charge, over-discharge and over-heating
  • Wide compatibility across Sony Alpha, NEX and Cyber-shot models

Four-pack NP-FW50 replacement for Sony mirrorless

This set contains four Kastar lithium-ion batteries built to the NP-FW50 form factor. Each cell delivers 7.2 volts and 1650 milliampere-hours for compatible Alpha and NEX cameras. The pack suits photographers who want spare power for long shooting days without carrying a charger.

11.8 watt-hour capacity per cell

Every battery in the pack is rated at 11.8 watt-hours, the single figure that determines how many shots or minutes of video you can record before swapping. The lithium-ion chemistry and built-in protection circuits guard against over-charge, over-discharge, over-voltage, over-current and over-heating.

Comfortable for a full day of stills.

With four cells you can cover a typical wedding or travel session of stills and short clips. Extended 4K recording or multi-camera rigs will drain the pack faster, so videographers planning non-stop capture should budget for additional packs or a mains supply.

How it compares

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

Price $20.99
Pricier than about 62% of the 5,900 comparable items (median $17.99).

Specifications

Product
Brand nameKastar
Model nameNP-FW50
Part numberBA-4B-FW50-E
Total capacity11.8 Wh
Product typeBattery
Power
Battery chemistryLi-Ion
Size & build
Product dimensions3 × 2 × 3 in
In the box
Pack contents4 Batteries

Other versions of this model

5 more in the same range

Questions about this item

How long will the 1650mAh capacity actually run my Sony a7 II?

The 1650mAh rating at 7.2V delivers 11.8Wh per cell, giving noticeably more shooting time than lower-capacity alternatives in the same NP-FW50 form factor.

What charging standard do these batteries use and what does it limit?

They charge via Sony BC-VW1 or BC-TRW chargers using the NP-FW50 interface, so charge speed and safety are governed by those original Sony charger designs.

Will the 3 by 2 by 3 inch pack fit inside my a6000 battery compartment?

Each individual cell matches the standard NP-FW50 size, so it slots directly into any camera or grip listed as compatible without modification.

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