Best dash cam battery packs

The three tiers

All three tiers together: $628.98 at the time of writing.

Why choose a battery pack instead of a hardwire kit?

A battery pack carries its own separate cell, so parking mode power never draws from the car's starting battery at all. That removes any risk of accidentally draining the car battery too far to start the engine, which is the main failure mode a hardwire kit's low-voltage cutoff is designed to prevent in the first place. The tradeoff is that a battery pack has a fixed runtime set by its own capacity, while a hardwire kit can draw on the car battery's much larger capacity for longer parking mode sessions.

Battery packs are also a simpler install in cars where accessing the fuse box is difficult or where you would rather not run wiring behind interior trim at all.

How long does a dash cam battery pack actually last?

Runtime depends on the pack's capacity and the camera's power draw. The 70mai BL96NNX states up to 30 hours of parking mode on its 96Wh cell, which works out to roughly 3.2 watts of average draw, close to the 4 to 5 watt range typical of a two-channel dash cam in parking mode, allowing for the pack not running the camera at full continuous recording the entire time. A pack's stated hours are a starting point; actual runtime varies with temperature, recording mode, and whether the camera is recording continuously or only on motion.

Why do dash cam battery packs use LiFePO4 cells?

LiFePO4, or lithium iron phosphate, cells handle heat better and have a longer usable life than the lithium-ion cells used in many consumer electronics, which matters for a pack that sits inside a car and can see extreme temperature swings. Every dedicated dash cam battery pack on this page that states its chemistry uses LiFePO4 for this reason.

How we chose

This page was researched from published manufacturer specifications and verified owner reviews on the retail listings, not hands-on testing. We compared stated capacity, cell chemistry, recharge time, and whether a pack is sold as a brand-matched accessory versus a general-purpose pack across current listings in this category.

We did not assign a watt-hour capacity or hour rating to any pack whose own listing did not state one, even where a similarly priced pack from another brand includes that number.

Buying tips

How much capacity do I actually need?

Match the pack's stated hours to how long your car typically sits parked and unattended between drives. A pack rated for 30 hours, like the 70mai BL96NNX, comfortably covers an overnight or a workday in a parking lot; shorter-rated packs suit drivers who park for just a few hours at a time.

Does a battery pack still need a memory card and, in some cases, a hardwire cable?

Yes, a battery pack replaces the power source for parking mode, not the dash cam or the card. Some packs, like the BlackboxMyCar PowerCell 8, include a hardwiring kit in the box for connecting to the camera; others expect you to already have the right cable for your camera.

Is a brand-matched battery pack worth paying more for?

It removes guesswork about connector fit and voltage compatibility with that brand's own dash cams, which is the main reason the THINKWARE iVolt Xtra and Blackvue B-130A cost more than the general-purpose REDTIGER and TXL packs on this page.

Where should a battery pack be stored in the car?

Follow the maker's instructions for mounting location, and avoid leaving the pack somewhere it will bake in direct sun for extended periods, since extreme heat shortens the life of any lithium battery, LiFePO4 included.