Power fact sheet

Battery & charger for your Sony Alpha 7S III (ILCE-7SM3)

Interchangeable-lens digital camera

Information from Sony on battery, charging and memory cards – as of 30/09/2026.

Battery
NP‑FZ100 (7.2 V)
Shots per battery charge
approx. 600 using the monitor · approx. 510 using the viewfinder (CIPA)
Video per battery charge
approx. 95 min using the monitor · approx. 80 min using the viewfinder (CIPA, actual recording in XAVC S HD (60p/50p, 50 Mbit/s), according to Sony)
Charging in the camera
Yes – via the USB‑C port (not via the Multi/Micro‑USB port) when the camera is switched off, e.g. from a USB power adapter (at least 1.5 A) or a power bank; faster with a USB PD device (recommended: 9 V/3 A or 9 V/2 A); when the camera is switched on, the battery is not charged
Power via USB
Yes – via the USB‑C port (not via Multi/Micro‑USB) during recording and playback, recommended with a USB PD device (9 V/3 A); a sufficiently charged battery must be inserted, but it is not charged in the process; under certain conditions, the battery is also used; only connect or disconnect the cable when the camera is switched off
Vertical grip
Vertical grip available separately (for two batteries)
Memory cards
Slot 1: CFexpress Type A or SD (UHS‑I/UHS‑II)
Slot 2: CFexpress Type A or SD (UHS‑I/UHS‑II)
Weight
approx. 699 g with battery and SDXC card

Measurement conditions according to Sony: CIPA standard, 25 °C, fully charged battery, factory settings, lens FE 28-70mm F3.5-5.6 OSS, CFexpress Type A card; stills: one shot every 30 seconds, switched off and on again after every 10 shots; video: actual recording with repeated recording, zooming, standby and switching on/off.

Charging and power via USB: information from Sony on the camera – we have not tested whether it also charges replacement batteries in the camera.

Sources (15) · retrieved on 30/09/2026

Sony and Alpha 7S III are trademarks or product names of their respective owners. Baxxtar is an independent brand and is not affiliated with Sony – the names only show which camera our products fit.

Battery check for your camera

Which Baxxtar battery fits?

According to Sony, the Sony Alpha 7S III uses the NP‑FZ100 battery – Baxxtar offers it as a single battery, in a twin pack and in a set with a charger.

Baxxtar NP‑FZ100: 2600 mAh · 7.2 V · 18.7 Wh

View matching batteries & sets

Not your camera? Choose another model

Baxxtar NP-FZ100 battery, compatible with the Sony Alpha 7S III

Switching cameras

Your Baxxtar NP‑FZ100 also fits …

According to our compatibility list, the Baxxtar NP‑FZ100 also fits these 16 cameras. If you switch to one of them, you can keep using your Baxxtar batteries and charger.

Battery planner

How many batteries do you need?

Set how much you shoot or film in a day – the planner works with the figures from Sony for the Alpha 7S III.

Guide value

2battery charges

Battery in the camera + 1 spare battery – for example, the single battery.

A guide value, not a guarantee: based on approx. 510 shots using the viewfinder per battery charge (CIPA figure from Sony for the Alpha 7S III, a standardised comparison test) or approx. 80 minutes of video (CIPA, actual recording in XAVC S HD (60p/50p, 50 Mbit/s), according to Sony). According to Sony, the actual runtime depends on the conditions of use; we have not measured these figures with Baxxtar batteries.

Products

Baxxtar NP‑FZ100 for the Alpha 7S III

Batteries, chargers and sets that fit the Alpha 7S III – buy on Amazon.

Batteries

2 products

Chargers

2 products

Sets & bundles

3 products

A bag for the camera? Our bags fit by interior dimensions – go to the bag guide.

All about the NP-FZ100 series All products for Sony

Amazon Store

All things Baxxtar Energy

Current prices and reviews – in the official Baxxtar Store on Amazon.

Visit the Baxxtar Amazon Store