Attached directly to a power source (2a) it works fine. it doesn't work with 20' extension cable. camera won't power on. why? please tell me

Try a different 20’ extension to be sure it’s not the cord that’s the issue

Does the sony a7riii comes with the notch for the cable as shown on the picture?

DO NOT BUY THIS FOR THE A7Riii! This isn't the right battery for it. If you have an A7Riii, look for a dummy battery that's marked "NP-FZ100".

Se puede conectar a una salida directamente de 7.4v, ya que la batería original trabaja en ese voltaje?

Si se puede, de hecho así funciona.

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NEEWER DC Coupler Replacement for NP-FW50 Battery Dummy Power Adapter with USB Cable Compatible with Sony A7 A7R A7S A7II A7RII A7SII A6500 A6400 A6300 A6100 A6000 NEX5 NEX7 etc.

Product ID: 230242079

Details

Amperage
2 Amps
Brand
NEEWER
Colour
black
Connector type
USB
Included components
1 x DC coupler
Input voltage
5 Volts

⚡Built-in Over-voltage & Short Circuit Protection

📸Compatible with 20+ Sony Camera Models

🔋2A USB Power Output

S/.306

Duties & taxes included

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Sold byAmazon PeruDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔌 Power your passion nonstop with NEEWER’s sleek USB dummy battery!

ON THE GO READY - Compact, lightweight design paired with USB power means studio-grade shooting anywhere, anytime.
SAFETY FIRST TECH - Integrated protection circuit guards your gear against over-voltage, over-current, and short circuits.
PLUG PLAY SIMPLICITY - No bulky adapters—just connect to any 5V/2A USB power source and keep creating without limits.
UNINTERRUPTED POWER FLOW - Say goodbye to battery swaps during critical shoots with continuous USB power delivery.
UNIVERSAL SONY COMPATIBILITY - Seamlessly powers a wide range of Sony mirrorless cameras from A7 series to NEX models.

The NEEWER DC Coupler Replacement for NP-FW50 is a compact USB-powered dummy battery designed for continuous operation of over 20 Sony mirrorless camera models. Delivering stable 5V/2A power with built-in safety protections, it enables extended indoor and outdoor shooting sessions without battery interruptions, making it an essential accessory for professional photographers and content creators.

Specifications

ASIN	B08FDG5J7M
Amperage	2 Amps
Best Sellers Rank	494 in Camera Battery & Charger Adapters
Box Contents	1 x DC coupler replacement for NP-FW50 battery, 1 x 1 m USB DC power cable
Brand Name	NEEWER
Colour	black
Compatible Devices	Sony A7, A7R, A7S, A7II, A7RII, A7SII, A6500, A6400, A6300, A6100, A6000, A5100, A5000, A3000, NEX5, NEX7, DSC-RX10 II III IV
Compatible Phone Models	Sony A7, A7R, A7S, A7II, A7RII, A7SII, A6500, A6400, A6300, A6100, A6000, A5100, A5000, A3000, NEX5, NEX7, DSC-RX10 II, III, and IV
Connectivity Technology	USB
Connector Type	USB
Country of Origin	China
Current Rating	2 Amps
Current Type	DC
Customer Package Type	Flat Free Package
Customer Reviews	4.5 4.5 out of 5 stars (492)
Enclosure Material	Plastic
Form Factor	Compact
Input Voltage	5 Volts
Item Weight	3.35 Ounces
Main Power Connector Type	USB
Manufacturer	NEEWER
Manufacturer Part Number	10097839
Model Number	10097839
Mounting Type	Travel/portable
Number of Items	1
Number of Power Levels	1
Output Current	2 Amps
Output Voltage	5 Volts (DC)
Plug Type	USB
Portable	Yes
Power Plug Type	No Plug
Power Source	Electric Cord
Special Features	Short Circuit Protection
Specification Met	CE
Total USB 2.0 Ports	1
Total USB Ports	1
UPC	191073052642
Unit Count	1.0 count
Wattage	18 watts
Wired Charging Connector Type	USB Type A

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