Will this work as a "dummy battery" with a reserve charge? I.e. passthrough keeps it topped off at 100%?

Dear Friend, Thanks for inquiry, Sorry, it cannot work as a dummy battery. If you need a dummy battery, we recommend you to see SmallRig dummy battery Asin:B0C85QN1SD, B0C85VJ1BVSincerely, SmallRig Customer Service

Can you charge the battery while its in the camera being used?

Dear Friend, Thanks for inquiry. We don't recommend using it this way. Sincerely, SmallRig Customer Service

do these charge other things via usb? like a powerbank as well?

No, the USB-C port does not output power. In response to your question, I attempted to charge several devices from the USB-C port on the camera battery. I tried this with a USB-C to Lightning cable and a USB-C to USB-C cable. None of those devices began to charge. I verified that these devices all accepted a charge when plugged into power sources with these same cables. The SmallRig battery that I used for this showed a 99% state of charge.

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SMALLRIG NP-FZ100 Camera Battery 2400mAh for Sony A7 IV, A7C R, A7C II4265B

Product ID: 537830151

Details

Battery capacity
2400 Hour
Battery cell composition
Lithium Ion
Brand
SMALLRIG
Number of batteries
1 A batteries
Recommended uses for product
Camera

⚡2400mAh high capacity

🔌USB-C fast charging 40% faster

🛡️Fire-resistant durable casing

¥15825

Duties & taxes included

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

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Description

⚡ Stay powered, stay ahead — never miss the shot!

SEAMLESS COMPATIBILITY - Works flawlessly with Sony Alpha A7 series and more—no annoying warning pop-ups.
BUILT TO LAST PROTECT - Frosted ABS/PC fire-resistant casing with stable voltage circuitry for ultimate safety.
CHARGE AT LIGHTNING SPEED - USB-C fast charging cuts your downtime by up to 65% compared to conventional chargers.
POWER THROUGH YOUR SHOOTS - 2400mAh capacity ensures extended shooting without interruptions.
VERSATILE CHARGING OPTIONS - Charge anywhere—power bank, car charger, or wall outlet with included USB-C cable.

The SMALLRIG NP-FZ100 Camera Battery delivers a robust 2400mAh capacity with advanced USB-C fast charging technology, reducing charge times by up to 65%. Designed for Sony Alpha series cameras, it offers reliable, fully decoded compatibility without warning pop-ups. Its durable, fire-resistant casing and versatile charging options make it the professional’s go-to power solution for extended shoots and on-the-go charging.

Specifications

ASIN	B0C77WS89N
Amperage	6.7 Amps
Antenna Location	Camera
Battery Capacity	2400 Milliampere Hour (mAh)
Battery Cell Type	Lithium Ion
Battery Weight	102 Grams
Best Sellers Rank	84 in Camera Batteries
Brand Name	SMALLRIG
Compatible Phone Models	A7R III, A7S III Camera
Country of Origin	China
Customer Reviews	4.6 4.6 out of 5 stars (796)
Item Dimensions	5.2 x 3.9 x 2.3 centimetres
Item Weight	102 Grams
Manufacturer	SMALLRIG
Model Number	NP-FZ100B
Number of Batteries	1 A batteries required. (included)
Product Warranty	1 year manufacturer
Reusability	Rechargeable
Unit Count	1 count
Voltage	7.2 Volts

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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¥15825

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

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The delivery time was excellent, and the packaging was secure.

2 months ago

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