SMALLRIG 2400mAh USB‑C Camera Battery for Sony NP‑FZ100 (NP‑FZ100 compatible, 4265B)

If your Sony camera uses an NP‑FZ100 battery and you’re tired of worrying about power on shoots, this SMALLRIG 2400mAh replacement is built for the practical side of filming and photography. The headline feature is USB‑C charging, so you can top up away from the original charger — a small detail that matters when you’re travelling, working on location, or simply want fewer cables.

Key takeaways

This is a compatible NP‑FZ100 (4265B) style battery with a stated capacity of 2400mAh (7.2V / 17.28Wh). It includes a USB‑C port for charging, with support for high‑current input (listed as 5V 2.2A) that’s claimed to reach a full charge in about 2.5 hours. There’s also a charge progress indicator: red while charging and green when complete.

On paper, it’s aimed at people who need dependable backup power for longer sessions, not a battery that’s only meant for occasional use. It also claims to be “fully decoded”, so you shouldn’t have to deal with a pop‑up warning about an incompatible battery window.

That said, it’s still a third‑party replacement. If you’re the type who always prefers OEM parts for peace of mind, you may want to weigh that preference first.

What to know before you buy

This battery is designed as a replacement compatible with NP‑FZ100 batteries, and the included description lists support for a range of Sony Alpha bodies and video‑focused models (including A7 III / A7 IV / A7C / A7C II, FX3, FX30, and ZV‑E1 among others). If your camera model is on that list, it should be a straightforward swap.

The “fully decoded” claim is one of the more useful bits here because warning messages can disrupt workflows. If you’ve experienced the annoyance of a battery behaving oddly — not charging, not discharging correctly, or draining unusually fast — this is the kind of replacement you might consider.

One limitation to keep in mind: while the packaging stresses a fixed physical fit (“exactly the same size as the original”), real‑world compatibility can still depend on your specific camera setup and firmware behaviour. It’s worth checking that your camera recognises NP‑FZ100 batteries normally.

USB‑C fast charging in practice

The USB‑C approach is the part that makes this battery feel more “on‑location friendly”. The description says you can charge via a power bank, a power strip, a car charger, or another suitable charger. For many users, that translates to fewer delays: you can keep a spare battery topped up between takes.

A simple example: during a one‑day shoot, you might finish a take, remove the battery, and plug it into a USB‑C output from a pocket power bank while you move locations. The red/green indicator helps you avoid guessing whether it’s still charging or already ready.

Battery capacity and what it means for shoots

With a stated 2400mAh (7.2V, 17.28Wh), this battery is positioned as a capable spare rather than an ultra‑high‑capacity monster. In day‑to‑day terms, it’s best suited for covering your session planning: one battery for active shooting, and this as the backup so you’re not stuck waiting for a wall charger.

The description also notes it’s a lithium battery with no memory effect, which is useful if you tend to charge opportunistically rather than fully draining first.

Where it may feel less compelling is if your priorities are maximum runtime above all else. For those chasing every last minute of shooting, you might want to look at other capacity options in the wider NP‑FZ100 ecosystem.

Build and charging stability (based on the stated design)

SmallRig’s description focuses on a durable case and safe charging electronics. It mentions a PC and ABS housing with a distinctive frosted finish, and it claims resistance to fire, alongside circuits intended to provide stable voltage and current output.

It also claims the battery won’t have the “stuck” issues that can come from incorrect sizing, because it’s designed to match the original battery size.

It’s not the sort of specification you can “feel” immediately, but for long‑term ownership, a robust casing and stable charging behaviour are exactly the details that reduce headaches.

Should you buy it?

It’s a good fit if you need an NP‑FZ100 replacement and you value USB‑C charging flexibility (power bank, car charger, wall charger), plus a clear charge indicator. If you often shoot on the move — events, travel, or video work where you may not have easy access to a dedicated charger — this kind of convenience is usually worth paying attention to.

It might not be the best choice if you strongly prefer OEM batteries only, or if you’re specifically looking for the longest possible runtime regardless of charging method. Also, if you’ve had strict compatibility issues with third‑party batteries in the past, you may want to be cautious and confirm your camera behaves as expected with NP‑FZ100 spares.

Mini FAQ

Does this battery charge through USB‑C while travelling?

Yes. The description states it has a USB‑C charging port and can be charged using a power bank, power strip, or car charger.

What do the charge lights mean?

It’s described as red while charging and green when charging is complete.

Is it compatible with NP‑FZ100 cameras?

It’s described as compatible with Sony cameras that use NP‑FZ100 batteries, and a list of supported models is provided in the product description.

Will it trigger an incompatible battery warning?

The listing claims it is fully decoded, so you shouldn’t have to worry about a battery compatibility warning pop‑up.

How long does a full charge take?

The description claims a full charge in about 2.5 hours when using 5V 2.2A input.