Switch between live 12v and usb power bank

[Cammerhere]

Looking at dashcams for front view and rear view. I want to be able to motion record when the car is off but use a USB bank instead of the car battery. The USB bank would recharge only when the car is on and I would want one that is quickly charged and can take this abuse. Is there a device, usb bank and camera combination I should be looking at?

 

[niko]

What is your ratio of driving vs parking per day (24h) ?

 

[Cammerhere]

I would say one to two hours of driving per weekday and questionable on weekend

 

[kandrey89]

Same...
I have a 26000mAh Li-Ion battery that most likely is better but lacking equipment to tie it in.
A simple relay that toggles based on ACCL wire state would work to switch from charging the bank to powering the camera. However the input charging voltage from car needs to be boosted to charge the Li-Ion.

15-24V input
https://www.amazon.com/gp/B00VIB8KAW
16.8V input 4.5A max
https://www.amazon.com/gp/B015TMJAW2
Using an eval kit for boosting voltages with ~4.5A I only found 2 on digikey, both ~$100, pretty expensive:
http://www.digikey.com/product-detail/en/texas-instruments/LM5122EVM-1PH/296-37501-ND/4457836
http://www.digikey.com/product-detail/en/on-semiconductor/NCV8871BSTGEVB/NCV8871BSTGEVBOS-ND/3026049

~$260 on the whole system including a relay and diy PCB board to mount a couple of components onto, and maybe a box if you want.

 

[Cammerhere]

hmmm I found the below and thinking I can just use it. Appears it will take charge from car and provide 12v

https://www.amazon.com/gp/B014GRM294

 

[Gibson99]

apparently some dashcams don't like the qualcomm quick charge protocol so be careful with that.

 

[runtohell121]

If you're not looking for a big power bank... 13400 mAh might be enough..
Letv Super Power Bank 13400mAh for $14.99 valid until 5/28 11:59PM EST
http://www.lemall.com/us/product/product-pid-409900003043.html

 

[mollydog]

sorry for slight thread drift

@niko

What is your ratio of driving vs parking per day (24h) ?

I’m thinking of getting something to power my SJ4000 and or my Gutup2 action camera's with a small power pack for when I want to do long time-lapse photography, any opinions on this modle I’ve seen there in the UK eBay, that purports to be a 16750mAh, as to if it would be good/powerful enough?

http://www.ebay.co.uk/itm/182098577210

I do have the heavy RS 12v 12AH/20HR battery but plan on using that mostly with the slider rail, and don’t plan on taking it with me on holiday this summer

 

[kandrey89]

hmmm I found the below and thinking I can just use it. Appears it will take charge from car and provide 12v

https://www.amazon.com/gp/B014GRM294

If you're not looking for a big power bank... 13400 mAh might be enough..
Letv Super Power Bank 13400mAh for $14.99 valid until 5/28 11:59PM EST
http://www.lemall.com/us/product/product-pid-409900003043.html

You guys are .... what's a bad word to call you but not be rude?
Dashcams run off 12V, not 5V.
All the cheap <20,000 mAh batteries only have USB out, hence 5V. Only the larger brick cases that I linked to and several others >20 Ah have the option to select 9,12,19 V outputs through a separate dedicated DC plug port.

 

[runtohell121]

You guys are .... what's a bad word to call you but not be rude?
Dashcams run off 12V, not 5V.
All the cheap <20,000 mAh batteries only have USB out, hence 5V. Only the larger brick cases that I linked to and several others >20 Ah have the option to select 9,12,19 V outputs through a separate dedicated DC plug port.

It depends on the dash cam to be honest with you. The generic/Chinese market ones mostly run on 5V ~1A and most if not all power banks can power it. I've been powering the dashcams I have (A119, A118C, Mini 0806, etc.) via power bank when I need to do upgrade firmware or change menu settings, etc. Some dashcams are just USB powered...

 

[kandrey89]

That's because your "action cams" have a USB plug and hence have to run 5V.

Panorama X2 has a DC plug, connected directly to the battery.

 

[Gibson99]

That's because your "action cams" have a USB plug and hence have to run 5V.

Panorama X2 has a DC plug, connected directly to the battery.

Now you're just being obtuse. So you're saying that the g1w, a118, street guardian cameras, Lukas, vicovation, and tons of other dashcams are supposedly action cameras? That's funny.

I do have a couple cameras that run on 12vdc (blacksys) but by and large, the vast majority of dashcams I've seen run on 5v, which means USB can run it.

 

[kandrey89]

Obtuse? You need to get a dictionary, I am being SPECIFIC, I said dashcams with USB ports typically run on 5V.

Doesn't look like 5V USB dashcams have parking mode, since wiring them up would require extra stuff.