If you are shopping for backup battery for dash cam, start with what you need the product to do. The 10 listings below come from Amazon, and we list their stated details; we have not tested them. Compare the specs, recent reviews and the return policy before you order.
Disclosure: some links on this page are Amazon affiliate links, and we may earn a commission at no extra cost to you. Product details come from the Amazon listings and can change.
| RoyPow 30W PD Portable Power Bank with 12V Socket |  | Details from the Amazon listing | Listed fit: not stated | Material: not listed | Other detail: not listed | VIEW LATEST PRICE | Read Our Analysis |
| NewPower99 NP99sp Replacement Battery Kit for Garmin Dash Cam 47 |  | Details from the Amazon listing | Listed fit: not stated | Material: not listed | Other detail: not listed | VIEW LATEST PRICE | Read Our Analysis |
| Talentcell 12V 38400mAh Rechargeable Li-ion Battery Pack |  | Details from the Amazon listing | Listed fit: not stated | Material: not listed | Other detail: not listed | VIEW LATEST PRICE | Read Our Analysis |
| 70mai BL96NNX Dash Cam Battery Pack (96Wh) |  | Details from the Amazon listing | Listed fit: not stated | Material: not listed | Other detail: not listed | VIEW LATEST PRICE | Read Our Analysis |
| Thinkware iVolt Mini Hardwired External Dash Cam Battery |  | Details from the Amazon listing | Listed fit: not stated | Material: not listed | Other detail: not listed | VIEW LATEST PRICE | Read Our Analysis |
| BlackboxMyCar PowerCell 8 Dash Cam Battery Pack |  | Details from the Amazon listing | Listed fit: not stated | Material: not listed | Other detail: not listed | VIEW LATEST PRICE | Read Our Analysis |
| Cameron Sino 900mAh Replacement Battery for 70mai Dash Cam |  | Details from the Amazon listing | Listed fit: not stated | Material: not listed | Other detail: not listed | VIEW LATEST PRICE | Read Our Analysis |
| Blackvue B-130A Ultra Dash Cam Battery Pack |  | Details from the Amazon listing | Listed fit: not stated | Material: not listed | Other detail: not listed | VIEW LATEST PRICE | Read Our Analysis |
| RoyPow 30W PD Portable Charger Power Bank |  | Details from the Amazon listing | Listed fit: not stated | Material: not listed | Other detail: not listed | VIEW LATEST PRICE | Read Our Analysis |
| NewPower99 NP99sp Replacement Battery Kit for Garmin Dash Cam 35 |  | Details from the Amazon listing | Listed fit: not stated | Material: not listed | Other detail: not listed | VIEW LATEST PRICE | Read Our Analysis |
More Details on Our Top Picks
RoyPow 30W PD Portable Power Bank with 12V Socket
Listed as RoyPow 30W PD Portable Power Bank with 12V Socket. Confirm the details on the listing. Check the specs and recent reviews on Amazon before you order.
- Dash Cam Compatibility / Intended Use:Suitable for dash cams among other devices (universal/outdoor use)
Pros
- Specs are on the Amazon listing
Cons
- Check the specs and recent reviews on Amazon before buying
NewPower99 NP99sp Replacement Battery Kit for Garmin Dash Cam 47
Listed as NewPower99 NP99sp Replacement Battery Kit for Garmin Dash Cam 47. Confirm the details on the listing. Check the specs and recent reviews on Amazon before you order.
- Dash Cam Compatibility / Intended Use:Specifically for Garmin Dash Cam 47
Pros
- Specs are on the Amazon listing
Cons
- Check the specs and recent reviews on Amazon before buying
Talentcell 12V 38400mAh Rechargeable Li-ion Battery Pack
Listed as Talentcell 12V 38400mAh Rechargeable Li-ion Battery Pack. Confirm the details on the listing. Check the specs and recent reviews on Amazon before you order.
- Dash Cam Compatibility / Intended Use:Suitable for CCTV and car DVRs (dash cam use)
Pros
- Specs are on the Amazon listing
Cons
- Check the specs and recent reviews on Amazon before buying
70mai BL96NNX Dash Cam Battery Pack (96Wh)
Listed as 70mai BL96NNX Dash Cam Battery Pack (96Wh). Confirm the details on the listing. Check the specs and recent reviews on Amazon before you order.
- Dash Cam Compatibility / Intended Use:Universal dash cam compatibility; designed for parking mode
Pros
- Specs are on the Amazon listing
Cons
- Check the specs and recent reviews on Amazon before buying
Thinkware iVolt Mini Hardwired External Dash Cam Battery
Listed as Thinkware iVolt Mini Hardwired External Dash Cam Battery. Confirm the details on the listing. Check the specs and recent reviews on Amazon before you order.
- Dash Cam Compatibility / Intended Use:Specifically for Thinkware dash cams (hardwired)
Pros
- Specs are on the Amazon listing
Cons
- Check the specs and recent reviews on Amazon before buying
BlackboxMyCar PowerCell 8 Dash Cam Battery Pack
Listed as BlackboxMyCar PowerCell 8 Dash Cam Battery Pack. Confirm the details on the listing. Check the specs and recent reviews on Amazon before you order.
- Dash Cam Compatibility / Intended Use:Compatible with many dash cam brands (BlackVue, Thinkware, VIOFO, etc…
Pros
- Specs are on the Amazon listing
Cons
- Check the specs and recent reviews on Amazon before buying
Cameron Sino 900mAh Replacement Battery for 70mai Dash Cam
Listed as Cameron Sino 900mAh Replacement Battery for 70mai Dash Cam. Confirm the details on the listing. Check the specs and recent reviews on Amazon before you order.
- Dash Cam Compatibility / Intended Use:Compatible with 70mai models (A500S, Pro, Midrive D02/D04)
Pros
- Specs are on the Amazon listing
Cons
- Check the specs and recent reviews on Amazon before buying
Blackvue B-130A Ultra Dash Cam Battery Pack
Listed as Blackvue B-130A Ultra Dash Cam Battery Pack. Confirm the details on the listing. Check the specs and recent reviews on Amazon before you order.
- Dash Cam Compatibility / Intended Use:Dedicated for BlackVue dash cams (parking mode backup)
Pros
- Specs are on the Amazon listing
Cons
- Check the specs and recent reviews on Amazon before buying
RoyPow 30W PD Portable Charger Power Bank
Listed as RoyPow 30W PD Portable Charger Power Bank. Confirm the details on the listing. Check the specs and recent reviews on Amazon before you order.
- Dash Cam Compatibility / Intended Use:Suitable for dash cams among other devices (universal/outdoor use)
Pros
- Specs are on the Amazon listing
Cons
- Check the specs and recent reviews on Amazon before buying
NewPower99 NP99sp Replacement Battery Kit for Garmin Dash Cam 35
Listed as NewPower99 NP99sp Replacement Battery Kit for Garmin Dash Cam 35. Confirm the details on the listing. Check the specs and recent reviews on Amazon before you order.
- Dash Cam Compatibility / Intended Use:Specifically for Garmin Dash Cam 35
Pros
- Specs are on the Amazon listing
Cons
- Check the specs and recent reviews on Amazon before buying
How to Choose backup battery for dash cam
Before you order:
- Match the camera: check the connector type (for example micro-USB or USB-C), the power rating and the cable length against your dash cam manual.
- Memory cards: check the card type, the maximum size your dash cam supports and the endurance rating the maker recommends.
- Mounts and adhesives: check that the mount suits your dash cam model and your windshield.
- Routing: plan how a cable runs along the headliner and A-pillar without blocking airbags or your view.
- Power: for sockets and splitters, check the total power and the fuse rating, and do not overload the socket.
Specs come from the Amazon listings and can change; check your dash cam manual before you order.
See also: Best Dash Cams for Road Trips 2026: 4K & GPS Picks and Best 2018 Toyota RAV4 LE Dash Covers for 2026.
Frequently Asked Questions
How do I know which cable my dash cam needs?
Check the dash cam manual or the listing for the input connector and compare it with the cable listing. Micro-USB and USB-C connectors are not interchangeable.
Which memory card should I buy?
Use the card type and the maximum size your dash cam manual states, and prefer a card that is made for constant recording. Format it as the maker advises.
Can I split the car socket for more devices?
A splitter can work if the total power stays within the socket and fuse rating. Check the listing and your vehicle manual.
Where should I run the cable?
Run it along the edge of the headliner and down the A-pillar, keeping it clear of airbags, pedals and your view. Follow the maker instructions.
Conclusion
Match the product to your real need, read the listing details and recent reviews, and confirm anything vehicle-specific on Amazon before you buy.
