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Question: I charged mine for 24 hours and battery still only lasts 5 minutes.  It works fine in my car and remains plugged into my always-on cigarette lighter.
Document: For as cheap as this product is, I can't really complain. The quality of the recording is just fine. I do have some complaints:- Every once in a while, the screen goes bezerk and scrambles everything, and doesn't record. I have to power cycle the device to get it to work. If I don't have the screen flipped down and notice it, there's no way to know it's actually not recording anything.- The battery is useless - it doesn't hold a charge past a few minutes. However, it has a feature that when plugged in to the cigarette lighter, it will automatically turn on and start recording when it detects power through the outlet (when the car is turned on).
The daytime picture quality is quite satisfactory. You can definitely read the highway signs in the videos and can read the license plate of the car stopped directly in front of you at a stop sign or red light if you are no more than around 15 feet away. At this setting (1080 Full HD) my 3 minute file sizes are averaging around 460,000 KB which is giving me 33 to 34 files on my 16GB Class 4 Micro SanDisk or a total of approximately 100 minutes before looping (overwriting) begins. While this works fine for me, I plan to try a Class 4 - 32GB card very soon, however, will still always use the best picture resolution available.
I bought this camera and the mini usb car charger did not work as described. All it did was ask me for mass storage or pc mode. The problem is there is not enough power going through your cable and/or cigarette lighter. To fix this you need to buy a USB car charger with 10 watts of power. I Bought a "Monster" USB "600" 10 watts "power port". I used the USB to mini USB cable that came with it (NOT THE CIGARETTE LIGHTER TO MINI USB) and plugged it into the cigarette lighter straight to my camera and it worked fine.
This gave me roughly 3 minutes of tinkering before it shut down.I fumbled with it until it powered up and automatically started recording while plugged into the cigarette lighter and auto-powered down when unplugged with no motion triggers for a minute or so. (I have over 10 years experience in the CCTV industry programming 100's of different DVR products)I mounted it in my car but while addressing the best video angle was very disappointed. The field of view is very narrow. It barely covered my hood. How is that going to help me?
Estimate 30 minutes battery life, per my experience. But you can plug it in to the "cigarette lighter" outlet and it will work while the battery recharges. If you wire it in, that will solve the battery life problem.I have a lease car, so I can't modify my car and wire it in. And plugging it into the DC power source provided in my car is inconvenient, with wire trailing very obtrusively and inconveniently. The wire can't be hidden and gotten out of the way without modifying the car.Overall, it's a pretty good product for the price.
I was expecting a dash cam that when I started my truck would turn on and start recording. It will not turn on with the with the power (charging) cord plugged in. It only works when the internal battery is charged. The most it will record is ten minutes but even though I set the menu to record for ten minutes, it shuts off at 2 minutes. I will be returning this unit
(After a few charging cycles the battery has lasted just over an hour, which ain't bad.) And per another user's review, I used the Kingston 16 GB Class 4 MicroSDHC Flash Card, and it works great. Based on the bitrate of the recordings, you can get from 2 to 3 hours on the 16G card. Mine came in a crushed and torn box (the Amazon box was fine,) and had the wrong HDMI cable included with it, but didn't appear to be used. Video quality during the day is adequate, night time is virtually useless, and the lights on the front must be someone's idea of a joke; there's no way they produce enough light to illuminate anything more than a few inches away.
I bought this one base on the good reviews and I think I got the defective unit. While recording, I plugged the car charger in and it stopped to give me the two choices, &#34;mass storage&#34; and &#34;PC camera&#34;. Come on, I am on the road and the cord is the  car charger not USB cable. I don't know how long the Lithium battery will last (and I am not going to find out because it needs to go back) but for the 5 hours trip, I want it recording while charging.
MIne stopped working properly just after 30 days, the return period. It only stays powered on for about 15-30 minutes, and then powers down for no reason. The 12V cigarette lighter plug is secure, and the light stays red on it the entire time. Power is not an issue, the camera just shuts off all the time for no reason. I'm using a 16GB mini-SD and use this in 1080 HD mode with the videos recording in 3-minute intervals.The videos are pretty clear when you view them on a computer, better than I thought they might.
The menus are in English and easy to understand and navigate. The lens rotation is tight, and both LEDs work (for what that's worth). I'm using a class 4 SanDisk 16GB MicroSD, and it works great, and the files overwrite as intended.One really cool feature is that all you have to do is use the USB cable/cigarette lighter adapter, and the camera will come on and start recording when the power comes on, and stop recording and turn off when it's removed. My outlets are always hot, so I will be re-wiring to have it activated by the ignition.
Answer: I do not have enough time to experience battery charge. I sent it back, mine was defected unit.