Best Overall
Dual-slot USB-C charging fills two NP-FZ100 cells in about two hours when paired with a 22.5W PD adapter. It keeps pace with single-bay chargers while handling both batteries at once, and the body is small enough for a lens pouch or side pocket. The five-step LED per slot shows charge level at a glance without the charger connected to power, and the dual-slot layout lets you charge one cell while keeping the other in the camera.
The battery-check button is the feature that changes how you plan a shooting day. Press it while the charger is unplugged, read the LED segment for each battery, and you know which cell to drop into the A7 IV next. That is valuable when two or three batteries are rotating through a long event; it also cuts down the time spent digging through a bag to find the pair you thought was full.
This charger fits A7 IV owners who already carry more than one battery and want a compact way to keep them topped up away from a wall outlet. It is a charger only, so batteries are not included; if you only charge one cell in-camera, there is little reason to add it. Rated speed assumes a 22.5W USB-C PD adapter, and with a weaker source the same batteries charge at a slower pace. A minority of units may have one slot that does not charge correctly, so checking both slots with a known battery soon after delivery is a sensible habit.
This charger sits at a budget-friendly price and does not rely on the long-term behavior of unfamiliar third-party cells. You supply your own Sony batteries, so the only variable is the charging hardware. Over-temperature, over-voltage, and trickle-charge protections cover the overnight-charging scenario without adding bulk, and the absence of a bundled battery means you are not paying for cells you do not need.
The small footprint is a benefit beyond travel: the charger disappears into a gear cube or side pocket, leaving the main compartment for lenses and the body. For hybrid shooters moving between photo and video, starting a block with two full NP-FZ100 batteries matters more than the few ounces the charger adds. It is the kind of accessory that stays in the bag permanently.
Pros
- Dual-slot charging tops up two NP-FZ100 cells in about two hours without the bulk of a multi-bay dock.
- Travel-friendly body fits in small bag pouches, making it a natural companion for a compact A7 IV outfit.
- LED battery-level indicators show charge per slot without plugging the charger into power.
- Over-temperature, over-voltage, and trickle-charge protections make overnight charging a low-concern habit.
Cons
- Rated speed requires a 22.5W USB-C PD adapter; weaker adapters extend charge time noticeably.
- In some cases, one slot may not charge correctly, so checking both channels with a known battery is worthwhile.
A compact two-slot charger that fits into an A7 IV travel kit and keeps two batteries ready without adding meaningful bulk.