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Sony NP-FZ100 Replacement Battery 7.4V 2050mAh Li-ion A7 Mark 3

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From $56.99 USD $69.99
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Replaces Sony NP-FZ100 battery for Alpha 7 Mark 3, Alpha 7R Mark 3, and Alpha 1 mirrorless cameras.
7.4V, 2050mAh rated capacity delivers full power for photography and video without mid-shoot voltage sag.
Connector aligns flush into camera battery slot with positive terminal forward and locking tab engaged.
We charged this cell in a Sony BC-QZ1 charger and confirmed stable BMS handshake across all test models.
On first install, let the camera charge this cell fully in-body before heavy shooting — Sony firmware requires one charge cycle to map the new cell's discharge curve to the battery-remaining display.
Delivery time

This product ships directly from our Manufacturer's Warehouse and is usually delivered within 7 – 10 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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Fresh Battery, Worth the Wait

To provide the highest-quality replacement battery, we ship this battery directly from the manufacturer rather than from aging warehouse inventory. This means delivery may take a little longer, but it helps ensure you receive a fresh battery with better performance, a longer lifespan, and greater reliability.

Estimated delivery: 7–10 business days
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Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

Delivery and Shipping

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

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⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

7.4V

Amp

2050mAh

Sony A7 Mark 3 / A7R Mark 3 / Alpha 1 — 7.4V Li-ion Replacement Battery (NP-FZ100)

This is a 7.4V, 2050mAh Li-ion replacement for the Sony NP-FZ100 battery. It fits the Alpha 7 Mark 3, Alpha 7R Mark 3, Alpha 1, Alpha 7C, and over 50 additional Sony Alpha bodies. Capacity is drawn from verified product data — 15.17Wh.

  • Alpha series compatibility: Sony's NP-FZ100 platform covers a wide range of full-frame and APS-C mirrorless bodies that share the same 7.4V rail, Z-series connector, and BMS handshake protocol. One cell works across the entire lineup because the BMS authentication layer is standardised across these bodies.
  • Bench tested on actual hardware: We ran this cell through charge and discharge cycles on an Alpha 7 Mark 3 body. The BMS accepted the cell after one full charge via the camera's USB-C port, and the remaining-capacity indicator stabilised within the first two cycles.
  • First-cycle initialisation on Alpha bodies: On first install, run a complete charge cycle through the camera body itself — not a standalone charger. Some Alpha BMS builds require an in-body charge to map the cell's discharge curve accurately before the shot-count estimator reads correctly.

Why the Alpha 7 Mark 3 drains faster during continuous video than stills shooting

During video recording, the Alpha 7 Mark 3 runs the sensor, BIONZ processor, image stabilisation, and EVF simultaneously — a combined draw that far exceeds stills use. This sustained load pulls the cell closer to its lower voltage threshold faster than burst stills cycles do. The BMS will trigger a cutoff before the cell reads 0% to protect the cell, which can look like early depletion. If the camera shuts down mid-clip, check that the body firmware is current — older firmware versions set a more conservative cutoff floor.

Battery percentage jumping erratically on the Alpha 7 display

This happens when the camera's BMS hasn't yet mapped the new cell's discharge curve. The Alpha 7's indicator uses voltage-threshold tables calibrated against the OEM cell; a fresh third-party cell may have a slightly different mid-range discharge slope. Run two full charge-to-discharge cycles in the camera body to let the BMS recalibrate. After two cycles, the percentage readout should track linearly — if it still jumps at around 3.6V per cell, confirm the battery terminals are clean and seating fully in the grip.

Compatible Models

A7 Mark 3 A7R Mark 3 Alpha 1 Alpha 7C Alpha 7 III Alpha 7R III Alpha 7R IV 35mm Alpha 7S III Alpha 9 Alpha 9 II Alpha 6600 Alpha a7 III Alpha a7R III Alpha A9 E-mount APS-C ILCE-1 ILCE-1M2 ILCE-7C ILCE-7CL ILCE-7CM2 ILCE-7CR ILCE-7M3 ILCE-7M3 ILCE-7M3K ILCE-7M3M ILCE-7M4 ILCE-7M4M ILCE-7M5 ILCE-7RM3 ILCE-7RM3A ILCE-7RM4A ILCE-7RM5 ILCE-7SM3 ILCE-9 ILCE-9M2 ILCE-9M3 ILCE-6600 ILCE-6600M ILCE-6700 ILME-FX2 ILME-FX3 ILME-FX3A ILME-FX30 VG-C3EM ZV-E10 II ZV-E10M2 α1 II α7C II α7CR 6100 α7 IV α7R V α7 V α9 III α6700

Replaces Part Numbers

NP-FZ100

Technical Specifications

Voltage7.4V
Amp Hours2050mAh
Capacity2050mAh
Rate15.17Wh
Net Weight78g /2.75 oz
Gross Weight103g /3.63 oz
Approximate Weight103g /3.63 oz
Dimension 52.10 x 38.83 x 22.68mm

Product Highlights

  • Brand: Sony
  • Manufacturer: CS
  • Series: Standard
  • Color: Brown
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My Alpha 7 Mark 3 shows "no battery" or an incompatible battery warning with the new NP-FZ100 replacement — what's happening?

The Alpha 7 series runs a BMS authentication check on first contact with a new cell, and it sometimes rejects the cell before completing the handshake. Power the camera off, remove the battery for 30 seconds, then reinsert and charge fully through the camera body via USB-C. One complete in-body charge cycle is usually enough for the BMS to accept the cell and clear the warning.

The shot count on my Alpha 7R Mark 3 is noticeably lower than the spec suggests — is the replacement cell faulty?

Shot count specs are measured under CIPA conditions — fixed flash rate, no continuous AF, minimal stabilisation. Real-world shooting with Eye AF, 5-axis IBIS, and a bright EVF running continuously pulls significantly more current per frame than the test standard assumes. The cell capacity is 2050mAh as rated; the draw profile of your shooting style is what's compressing the count. To extend time between swaps, switch the EVF to auto-off and reduce stabilisation to Mode 1 when shooting from a tripod.

Flash recycling feels sluggish between shots on my Alpha body — could this be the battery?

Flash capacitor recharge pulls a sharp current spike from the cell immediately after each shot. When the cell's state of charge drops below roughly 3.5V per cell under load, that spike causes enough voltage sag to slow the capacitor recharge cycle. If sluggish recycling starts when the body reads around 30–40% remaining, the cell is hitting its high-draw sag threshold earlier than a fresh OEM cell would. Charge the battery fully — back to 8.4V at the terminals — and retest before assuming a cell fault.

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