Supercapacitor vs Battery Dash Cam: Which Copes Better With a Hot Car?

This lesson draws on VIOFO’s product and support pages, Garmin’s Dash Cam 47/57/67W manual, PCWorld’s Dash Cam 57 review and a DashCamTalk owner thread. How we research explains the method.

What each one does

Every dash cam needs a little stored power for the moment you switch the car off. A supercapacitor holds just enough: VIOFO says it provides enough power to safely save the current recording and shut down properly when power is cut. It is not meant to run the camera unplugged.

A lithium-ion battery stores far more. PCWorld’s review of Garmin’s Dash Cam 57 says its onboard battery can run the camera continuously for 20 minutes. The cost is a narrower charging range: Garmin’s manual for the 47/57/67W lists charging only from 32°F to 113°F (0°C to 45°C).

VIOFO’s case for supercapacitors is heat. It says lithium batteries degrade quickly in the extreme temperatures found on car dashboards, while supercapacitors handle a wider range. That is a maker’s claim, but the ratings below point the same way.

The ratings side by side

Camera	Stored power	Operates	Other limit
VIOFO A119 Mini 2	Supercapacitor	-4°F to 149°F (-20°C to 65°C)	Storage up to 158°F (70°C)
VIOFO A229 Plus 2CH	Supercapacitor	-4°F to 149°F (-20°C to 65°C)	Storage up to 158°F (70°C)
Garmin Dash Cam 47/57/67W	Lithium-ion battery	-4°F to 140°F (-20°C to 60°C)	Charges at 32-113°F (0-45°C)

The Garmin limits come from its manual and the battery from PCWorld’s review. Garmin’s newer Dash Cam Mini 3 has its own rating, covered in Garmin Mini 3 vs VIOFO A119 Mini 2.

Rated higher, not immune

VIOFO’s support center says it is normal for its cameras to get hot while recording, because they transfer data at high speed. They have built-in high-temperature protection: when they overheat, VIOFO says, “they will stop recording, and turn off”, then work again once they cool down.

So a higher rating protects the camera, not the recording. VIOFO’s own pages say a dashboard in summer sun can get hotter than the camera’s storage rating in the table above. How hot parked cars get in measured studies is covered in can you leave a jump starter in your car.

VIOFO’s advice: avoid leaving the car unshaded in the sun for long in summer, and prefer an underground lot or home garage. If overheating is a concern, it suggests recording at 2K instead of 4K and at a lower bitrate. How the A229 Plus and Pro compare on heat is in A229 Plus vs A229 Pro.

Dash cams in the cold

Cold is the other end. VIOFO’s and Garmin’s ratings both stop at -4°F (-20°C), and a battery camera adds a charging floor: Garmin lists no charging below 32°F (0°C). The same lithium rule applies to jump packs, as jump starters in cold weather explains.

Owner reports fill in the rest. In DashCamTalk’s VIOFO A129 Pro forum, an owner in Manitoba said their camera rebooted again and again after a few hours parked at -13°F (-25°C) and colder. Replies pointed first at the power supply and the memory card, and one owner’s fix on another camera was to leave it plugged in 30-60 seconds to warm up, then unplug and replug it.

A weak car battery also shows up first in cold weather, and the signs it is dying are worth checking before you blame the camera.

Which to buy

Car parked in the sun, or a hot climate: a supercapacitor camera, plus shade whenever you can find it.
You want a few minutes of recording unplugged: a battery camera, accepting its narrower charging range.
Parking mode: either type needs constant power for it, explained in does parking mode drain your battery.

VIOFO’s A119 Mini 2 is a small front-only supercapacitor camera, with the rating shown in the table above.

VIOFO

VIOFO A119 Mini 2

A small front-only dash cam: 2K at up to 60fps (HDR at 30fps), built-in GPS and a 1.5 in screen. It cannot add a rear camera, and the microSD card is not included.

Read the full guide

Key specs

2560 x 1440 at 60fps, HDR at 30fps
140° lens, 1.5 in (3.8 cm) screen
Built-in GPS logs speed and location
microSD up to 512 GB, sold separately

Mid-range

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The A229 Plus 2CH carries the same rating with a 2K rear camera added (do you need one). If plates matter more than heat, see can a dash cam read license plates.

VIOFO

VIOFO A229 Plus 2CH

Front and rear dash cam with a 2K front camera that records at 60fps (HDR at 30fps) and a 2K rear camera. DashCamTalk says it runs cooler than the 4K A229 Pro. Parking mode needs a hardwire kit such as the HK4.

Read the full guide

Key specs

Front: 2560 x 1440 at 60fps, HDR at 30fps
Rear: 2560 x 1440 at 30fps
140° front lens, 2.4 in (6.1 cm) screen, GPS
microSD cards up to 512 GB

Premium

Paid link

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Sources

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