The Sony A7C and A7C II run on the NP-FZ100 — the same pack used in the A7 III, A7 IV and A7R V. That is the quiet advantage of these compact bodies: small shell, big-battery stamina. If you are shopping for spares, anything built to the NP-FZ100 spec will work. The standard version is rated 2280mAh, 7.2V, around 16.4Wh. If you want a little more headroom, the 2400mAh TNP-FZ100 is the step up.
Going light does not mean hunting for a smaller battery. It means sticking with the standard cell and carrying one less. Two batteries covers most days. A full travel day or an all-day shoot calls for three.
Why the A7C Bodies Use NP-FZ100 Instead of NP-FW50
With the A7C generation, Sony made a change that reads as minor but matters a lot: the small body dropped the low-capacity pack and moved to the NP-FZ100 used across the full-frame lineup. Compared with the NP-FW50 in the earlier A7 series, the FZ100 holds substantially more energy for only a small increase in body thickness. That trade is the main reason the A7C and A7C II balance size against runtime so well.
One correction worth repeating, because it trips people up often: the A6400, A6500, A7, A7 II and A7R II run on NP-FW50 and cannot take an FZ100. Different shape, different contacts, different capacity. Buying the wrong one means a return. If you run several bodies, check each model before ordering. Our Sony mirrorless battery comparison chart maps this out, and the full model list is on the NP-FZ100 compatible battery page.
Three Things to Decide Before You Buy Cells
Weight versus grip
People pick the A7C because it is light. A single NP-FZ100 weighs roughly 80 grams, so two cells plus a charger add around 200 grams to the bag — less than one extra lens. What actually changes the feel in hand is the battery compartment: FZ100 bodies have a slightly wider grip. If you prefer a slim grip, add a base plate or half case rather than trying to solve it with a different battery.
Discount the rated numbers
Official CIPA figures usually land in the 500 to 700 frame range, and real-world use tends to deliver roughly 60 to 80 percent of that. Video and burst work sit lower still. On a body like the A7C, one cell in mixed shooting — mainly stills, some clips, frequent playback — tends to cover somewhere around 400 to 600 frames. Shoot 4K back to back and continuous runtime drops to a bit over an hour. Plan the count around your own habits, not the spec sheet.
How many to pack
A working rule: two cells for a day of street shooting, three for travel or a long day out, three to four plus a dual charger for weddings and events where stopping is not an option. Our NP-FZ100 two-battery kit is a solid base for travel. The charger handles two cells at once, so an overnight session refills everything.
2280mAh Versus 2400mAh: Worth the Extra Money?
The gap is about 5 percent. In practice that is a few dozen frames or a few extra minutes of video. If weight is the priority, one more standard cell buys you far more than the upgrade does. If your rhythm is bursts or long takes, the higher-capacity TNP-FZ100 at 2400mAh gives each cell a little more margin. For a closer look at how capacity ratings translate to real output, see 2280mAh vs 2400mAh explained.
Setups for Three Typical Days
| Shooting day | Suggested kit | Why | Typical spend |
|---|---|---|---|
| Daily carry / weekend street | 1–2 cells + single charger | Check charge once a day; two rotating cells are plenty | From about $22.93 for a one-battery kit |
| Travel / full day out | 3 cells + dual charger | High shooting density; top everything up overnight | About $36.74 for two batteries and charger, plus one spare cell |
| Video / vlog first | 2 cells + power bank or dummy battery | Recording drains fast; fixed setups benefit from external power | From about $17.89 per cell |
Those figures use our single-cell price of about $17.89, the one-battery kit at about $22.93, and the two-battery kit at about $36.74. A standalone charger runs roughly $5 more than a bare cell. A genuine Sony NP-FZ100 generally starts at $70 and up through official channels, so a compatible setup costs a small fraction of that if you only need backups.
Care and Handling
- Top up often rather than running cells flat, and avoid long storage at empty or full charge.
- For long breaks, store at 40–60 percent in a cool, dry place around 59–77°F, and recharge every three months.
- Cold hurts capacity. Below about 32°F the drop is noticeable, and near 14°F you may see roughly half the normal runtime. Keep spares in an inside pocket and rotate them.
- A body that says it may not display the remaining charge accurately is behaving normally — keep shooting. If you get “cannot be used” or an identification error, check for dirty contacts and confirm the model.
- If a cell swells, stop using it immediately. Do not charge or discharge it further. Take it to a battery recycling point; never puncture or burn it.
For the broader picture on lifespan and cost between genuine and third-party cells, read NP-FZ100 genuine vs third-party compared.
FAQ
Can the A7C II use batteries from an A7 III?
Yes. Both bodies take the NP-FZ100, so genuine and compatible cells swap freely between them.
Will the camera reject third-party cells?
Most compatible packs run fine in the A7C and A7C II. Some bodies show a note that remaining charge may display inaccurately. That is normal and does not stop shooting. If a cell genuinely fails to be recognized, wipe the contacts and confirm the model first.
How long does one cell record video?
Resolution, bitrate and temperature all move the number, so treat it as a range of roughly one to two hours. For locked-off long takes, a dummy battery or power bank gives steadier results.
How many can I fly with?
At around 16.4Wh these sit well under the 100Wh limit, so no airline approval is required and carry-on is the rule: spare batteries go in your cabin bag, never in checked luggage. Protect the terminals with the original packaging, caps or tape. Some airlines cap the count per passenger, so check before you fly.
Bottom Line
Kit batteries for the A7C or A7C II one way: confirm the NP-FZ100 spec, let your shooting density set the count, and save weight by carrying one less rather than buying a smaller cell. Start with two, take three when traveling, and add external power if video is the main event. Our NP-FZ100 compatible battery at 2280mAh runs about $17.89 per cell, about $22.93 with a charger, and about $36.74 for two cells and a charger. If you want more margin, the 2400mAh TNP-FZ100 is worth a look. Studios, rental houses and anyone ordering 100 units or more can get volume pricing through our wholesale inquiry page.