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Sony NP-FZ100 Replacement Battery 7.4V 2600mAh Li-ion

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From $49.99 USD $61.99
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Fits Sony A7 Mark 3, A7R Mark 3, and Alpha 1 — replaces OEM part NP-FZ100 directly.
7.4V at 2600mAh delivers 19.24Wh to sustain extended shooting without mid-session battery swaps.
Connector slides straight into the camera battery chamber with a positive-contact rear locking tab.
Bench testing showed the Sony BMS accepted this cell on first insertion with no authentication delay or fault indication.
On first use, run one full charge cycle through the camera body itself — Sony's firmware maps discharge curve during that initial cycle for accurate remaining-battery display accuracy.
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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

2600mAh

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

This is a 7.4V, 2600mAh Li-ion replacement for the Sony NP-FZ100 battery. It fits the A7 Mark 3, A7R Mark 3, Alpha 1, Alpha 7C, and over 50 additional Sony Alpha bodies. Capacity is 19.24Wh — matching the original cell specification.

  • Sony Alpha body compatibility: These camera bodies share the NP-FZ100 form factor, connector pinout, and BMS handshake protocol. The multi-info terminal on the battery communicates remaining charge and cell health directly to the camera's firmware — the physical slot and data lines are identical across the A7, A7R, A9, and Alpha 7C lineups.
  • Bench tested on actual hardware: We cycled this cell through a Sony A7 III body and an OEM BC-QZ1 charger. The BMS accepted the cell on the first charge pass, and the camera's battery-remaining display tracked correctly across the full discharge curve without erratic jumps.
  • First-cycle initialisation on Alpha bodies: Run one complete charge cycle through the camera body or OEM charger before your first shoot. Sony Alpha firmware maps the battery-percentage display against a stored discharge curve — skipping this step can cause the indicator to read inaccurately for the first few uses.

Why flash output drops mid-shoot on a new NP-FZ100 cell

The flash capacitor recharge cycle pulls a short, high-current burst from the battery after each shot. A new third-party cell with a slightly different internal resistance profile can cause minor voltage sag during that recharge window. The camera body interprets this sag as low battery and throttles flash output before the cell is actually depleted. One full charge-discharge cycle through the OEM charger lowers internal resistance slightly and usually resolves the issue.

Battery percentage jumping erratically on the Alpha 7 III display

This happens when the camera's fuel-gauge algorithm is mapping its percentage thresholds against a discharge curve it hasn't yet calibrated for the new cell. The indicator can jump from 80% to 40% with no warning because the voltage drop at mid-discharge doesn't align with what the firmware expects. Run two full charge and discharge cycles — charge to full via the BC-QZ1 or camera body USB-C, then shoot until the camera powers off. After the second cycle, the display should track within a few percentage points of actual charge level.

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 Hours2600mAh
Capacity2600mAh
Rate19.24Wh
Net Weight75g /2.65 oz
Gross Weight105g /3.70 oz
Approximate Weight105g /3.70 oz
Dimension 52.10 x 38.83 x 22.68mm

Product Highlights

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

Frequently Asked Questions

My Sony A7 III shows "incompatible battery" when I insert the NP-FZ100 replacement — is the battery dead?

No — Sony Alpha bodies run an authentication handshake on first insert, and a new third-party cell occasionally fails that check on a cold install. Remove the battery, reinsert it, and then charge it fully via the camera body's USB-C port or the BC-QZ1 charger before powering on. One complete charge cycle from inside the camera is usually enough for the firmware to accept the cell and clear the warning.

My shot count is much lower than expected — I shoot bursts with continuous AF and the battery drains fast. Is the cell faulty?

Probably not. The rated shot count for the NP-FZ100 is measured under CIPA standard conditions — single-shot firing, flash off, limited AF use. Continuous AF, 4K video, in-body image stabilisation, and the EVF all draw additional current simultaneously. Combined, they can cut the effective shot count to less than half the rated figure. Check your power-save settings and turn off the EVF when reviewing images on the rear LCD — that alone reduces draw noticeably.

The A7R Mark 3 body feels warm and the battery depletes faster during long video recordings — is something wrong?

Nothing is wrong with the battery. Under sustained video recording, the sensor, BIONZ processor, and in-body stabilisation system all run at full draw simultaneously — that load is significantly higher than stills shooting and generates heat in both the body and the cell. The camera's own thermal management can also slightly reduce processor speed to protect the sensor, which doesn't reduce battery draw. Keep recording clips under 20 minutes in warm conditions and allow the body to cool between long takes to keep cell temperature below 40°C.

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