Kastar
Kastar NP-FW50D 2-pack camera battery
Two 7.2 V lithium-ion packs with built-in USB-C charging and safety circuits, compatible with Sony Alpha and NEX cameras
- TypeBattery
- Pack2 Batteries
- ChemicalLi-Ion
- Capacity11.8 Wh
- Dimensions3*2*2 Inch
- FeaturesHigh Capacity and Manufacture Price.
- USB-C charging for on-the-go power
- 1650 mAh capacity extends shooting time
- Built-in protection against over-charge and over-heat
- Compatible with Sony Alpha and NEX series
- Two batteries included for backup convenience
Two-pack NP-FW50D replacement
Kastar supplies two lithium-ion batteries rated at 7.2 V and 11.8 Wh each, built as direct replacements for the Sony NP-FW50 cells used across a wide range of Alpha and NEX mirrorless bodies as well as Cyber-shot RX10 models. The pack suits photographers who want spare power for long shoots without relying on a single original battery.
USB-C charging on each cell
Every battery integrates a USB-C port that accepts a 5 V 2 A adapter, so you can top up from a wall charger, power bank or laptop without a dedicated camera cradle. A built-in LED shows red while charging and green when full, removing the guesswork from recharge cycles.
Safety circuitry and thermal limits
The cells meet UL 1642 and CE standards and include protection against over-charge, over-discharge, over-voltage, over-current and over-heating. In normal use the pack runs within the thermal envelope of the original NP-FW50 design, adding no extra heat or noise to the camera body.
Highlights
- USB-C charging for on-the-go power
- 1650 mAh capacity extends shooting time
- Built-in protection against over-charge and over-heat
- Compatible with Sony Alpha and NEX series
- Two batteries included for backup convenience
Specifications
| Brand | Kastar |
|---|---|
| Model | NP-FW50D |
| Part Number | BA-2B-FW50D-5 |
| Type | Battery |
| Pack | 2 Batteries |
| Chemical | Li-Ion |
| Capacity | 11.8 Wh |
| Dimensions | 3*2*2 Inch |
| Features | High Capacity and Manufacture Price. |
Questions about this item
How long will the 11.8 Wh capacity actually last in my a6000?
The 1650 mAh cell at 7.2 V matches the original NP-FW50 rating, so you can expect comparable shooting time per charge in any listed Alpha or NEX body.
Can I charge these batteries directly with a USB-C cable instead of a separate charger?
Yes, each cell has a built-in USB-C port and accepts a 5 V 2 A supply; a red LED shows charging and green shows full.
Will the 3 x 2 x 2 inch dimensions fit the battery compartment of my a6400 without forcing it?
The pack is built to the NP-FW50 form factor and is listed as compatible with the a6400, so it seats normally in the standard compartment.
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