ThinkwareiVolt Mini Hardwired External Battery Pack, for Thinkware Dash Cams, 20-Hour Parking Mode, 45-Min Recharge

The wiring instructions for a Viofo dashcam were incorrect,but the Viofo forum got it right.The external battery is a good product.

I wasn't planning on getting an ext. battery pack for my Viofo A229 Plus, but after some consideration and not wanting to put unnecessary drain on the battery in my GLC43, I bit the bullet and bought this battery.Everything you need to install this ext. battery is included with the exception of your hardwire kit for your specific dashcam. That said, the output wire is a good length and once you solder/connect your hardwire kit to the wires, you'll have more than enough length to snake this around your car. I decided to place my battery under the cargo space next to my spare tire as this kept it away from vehicle guests kicking the battery if I were to place it under the driver's seat. Overall, the ease of installation and included wires is a nice touch.This ext. battery does support my Viofo A229 Plus, you just have to be mindful of the wiring. Between the output wire and the hardwire kit, ACC is yellow on the Viofo HK4 while ACC is red on the Thinkware iVolt. Once you connect the proper wires together, parking mode works flawlessly.It's not the most robust battery when you compare it to others in the market, no app, limited in how many hours it can record. Where it does excel is its small footprint, if you want to tuck it away somewhere in your car.

I like the compact size, the way it charges when car is driven. And the increased time for parking mode. With no stress on car battery.

This unit was easy to install, all together 4 piece of wires. Go instruction easy to follow.

I purchased the Think ware mini battery in February and it failed in November. I used there cigarette adapter for power and in November it started to no longer charge the battery and then started to pop the fuse to the cars cigarette plug. They are going to honor the warranty, They are going to exchange the battery for me. The cost of shipping is worth another try. I just hope the new one will last longer.