In my experience, I totally feel u on the battery struggle. For your a6700, i honestly have a love-hate relationship with the whole power setup. I’ve had some pretty annoying issues with cheap third-party stuff... like, i tried some generic ones last year and they LITERALLY started swelling after a few months. Sooo sketchy. Honestly, for a big trip, i gotta recommend sticking with the official Sony NP-FZ100 Rechargeable Lithium-Ion Battery (2280mAh) as ur primary. I know, they're expensive and it basically sucks, but Sony is highkey aggressive with their firmware lately. I've had compatibility warnings pop up on my screen mid-shoot with off-brands and it just ruins the mood, you know? BUT, if u really wanna save some cash, the SmallRig NP-FZ100 USB-C Rechargeable Camera Battery is actually okay as a backup since u can charge it directly with a cable. Just be careful cuz they sometimes run a bit hotter than the Sony ones. For the charger, I've been using the SmallRig Dual USB-C Battery Charger for NP-FZ100 and it's basically the most compact thing I've found for a carry-on. Unfortunately, it's not as fast as I expected tho, which is kinda disappointing when u gotta juice up two batteries before a flight... but yeah, it gets the job done. Anyway, definitely don't go too cheap on the batteries cuz the a6700 draws a lot of power and u dont want it dying on u in the middle of a cool shot! gl! 👍

Yo! Just saw this while I have a sec... honestly, I feel you on the travel anxiety with power. I've been shooting Sony for over a decade and honestly? The a6700 is a beast, but it can be picky about what it eats haha!! For a budget-conscious setup that won't leave you stranded or broke, here's what I've learned from years on the road: * **Go Hybrid with Batteries:** Keep your official Sony one as a backup for heavy video days, but for the rest, grab a pair of Neewer NP-FZ100 Replacement Battery 2280mAh. I've used these for years and they're literally 1/3 the price. Ngl, they might give you 5% less runtime, but for the savings? Worth it every time. Plus, they usually dont throw those annoying pop-up warnings anymore.
* **Built-in Charging is King:** If you want to save space, check out the K&F Concept NP-FZ100 USB-C Rechargeable Battery. You can literally plug a USB-C cable directly into the battery itself. No more carrying a separate plastic charger block! It's sooooo much easier for carry-on space when you're tryna pack light.
* **The Pro Charger Choice:** If you really want a dual dock, I highkey recommend the Nitecore USN4 Pro Dual Slot USB QC Quick Charger for Sony NP-FZ100. It’s super slim and shows you the actual "health" of the battery and the charging current. Basically, it supports Quick Charge, so it's way faster than the cheapo generic ones you find on Amazon. Third-party chips have come a long way, so compatibility errors are pretty rare now. Just make sure whatever you buy is "fully decoded" so the camera doesn't yell at you lol. Anyway, hope that helps! Good luck on the trip... peace! 👍

Quick question - are you shooting mostly 4K video or just stills? It really affects the thermals. For a pro travel setup, I'd check these: * SmallRig NP-FZ100 USB-C Rechargeable Camera Battery ($40ish) - you can charge it directly via USB-C, no dock needed!
* ISDT NP2 Air Dual Channel Camera Battery Charger - super tiny and handles heat way better than cheap generic blocks. Compatibility is usually fine now, but Sony firmware is picky about reporting accurate percentages on some off-brands. 👍

Honestly, I've spent way too much time looking into the actual BMS (Battery Management System) and decoding of these Z-series clones lately. If you want to avoid that annoying "operation and safety" pop-up on the a6700, you need cells that are 100% fully decoded. The market is flooded with cheap stuff that fails the handshake once Sony updates the camera firmware!! If you're looking for a setup built for the road, check these: * Nitecore UFZ100 USB-C Rechargeable Li-ion Battery – Nitecore specializes in power management, so their cells are super stable and have their own built-in charging ports for emergencies.
* Nitecore USN4 Pro Dual-Slot USB Quick Charger – This is basically the pro travel standard. It’s tiny and actually shows you real-time battery health and voltage info on the screen.
* K&F Concept NP-FZ100 Decoded Battery – These are a solid budget play that usually stays ahead of the firmware blocks and handles heat well. Anyway, the a6700 supports USB-PD (Power Delivery), so basically you can just top it off with a beefy power bank while it’s in your bag. Who even needs a wall outlet anymore? lol.

Late to the party but I actually disagree with the idea of carrying a bunch of specialized docks. Tbh, since the a6700 supports Power Delivery, I have switched to a more DIY power setup. I mostly just use a high-capacity bank to top off the camera while it is sitting in my bag. It saves so much space in a carry-on compared to a bunch of plastic chargers. I have been using the Anker 737 Power Bank 24000mAh 140W and it works perfectly to keep the camera alive even during long video sessions. If you really want a cheap battery backup, the K&F Concept NP-FZ100 Replacement Battery 2250mAh has been reliable for me without any compatibility errors so far. Instead of a fancy dock, maybe just look at a simple Neewer NP-FZ100 Dual USB Charger with LCD Screen if you really need to charge two at once overnight. It is super thin and fits basically anywhere in a side pocket. Honestly, the power bank approach is just way more versatile for travel since it charges your phone too.

@Reply #6 - good point! PD charging is seriously a lifesaver when you are on the move. I have been using these Z-series batteries since they launched and honestly, the long-term health of your cells depends so much on how you treat them during these trips! I really want to help you build a kit that stays reliable for years, but i gotta ask a couple things first to give you the best advice:

• What kind of weather are you expecting on this trip? Temperature swings totally change which chargers I would trust to not overheat.
• Are you mostly gonna be near wall outlets at night or do you need a setup that is super efficient for charging off a power bank while you are out in the field? Let me know and i can give you some more specific data on what works best!

Seconded!

Great info, saved!