Discharge prevention devices with short cut off time

[Jez]

Hi all,

I'm looking at buying a BDP kit to wire in a dash cam (or two).

I've seen the multi safer, but the minimum cut off time is 6 hours. Ideally I'd like one that can go down to just a couple of hours.

It looks like the blackvue power magic goes down to one hour https://dashcamtalk.com/battery-discharge-prevention/ But the blackvue power magic "pro" only goes down to 6 hours. Seems a bit counter intuitive that the "pro" version has reduced functionality...

Does anyone know of any others that go to less than 6 hours? I'm struggling to find the non-pro version of the blackvue power magic online, and also unsure of whether to buy a model that's seems to have been superseded and is hard to find.

Thanks

 

[CDNinHH]

Have a look here:

http://shop.lukasdirect.com/lukas-store/accessories/hardwire


http://www.lukashd.com/gnuboard4/bbs/board.php?bo_table=eng_automanual&wr_id=6

Although it looks like 6 hours is the min with the Lukas as well.

 

[Jez]

Yes, 6 hours too. The only one I've seen which isn't appears to be the discontinued blackvue power magic.

 

[CDNinHH]

You could just set the voltage at a high trip point, that would reduce the recording time if that is your goal.

 

[Chris Hunt]

Hi all,

I'm looking at buying a BDP kit to wire in a dash cam (or two).

I've seen the multi safer, but the minimum cut off time is 6 hours. Ideally I'd like one that can go down to just a couple of hours.

It looks like the blackvue power magic goes down to one hour https://dashcamtalk.com/battery-discharge-prevention/ But the blackvue power magic "pro" only goes down to 6 hours. Seems a bit counter intuitive that the "pro" version has reduced functionality...

Does anyone know of any others that go to less than 6 hours? I'm struggling to find the non-pro version of the blackvue power magic online, and also unsure of whether to buy a model that's seems to have been superseded and is hard to find.

Thanks

This one goes down to 2 hours...pretty costly unit by comparison though.

http://www.vicovation.com/blog.asp?IDno=501&lang=eng

http://www.vicovation.com/product.asp?IDno=55&lang=eng

 

[Jez]

Thanks CD, I may end up doing that.

Chris - that's a serious BDP device! Thanks for the link. It is costly as you said but I'll bear it in mind.

 

[throrope]

Well, you could install a small rechargeable 12v battery with the dashcam using an add-a-fuse on a circuit engerized with ignition. These batteries are used in various capacities on computer ups units and available online. The battery would charge while driving and run the dashcam when parked. Because it would be isolated from the car upon removal of the key, it won't discharge the car battery. Add a few diodes for even more isolation.

 

[Jez]

Thanks but a custom circuit with an extra battery and diodes sounds a bit over the top! I would still like the cam to run for a couple of hours, just not six.

 

[jokiin]

Thanks but a custom circuit with an extra battery and diodes sounds a bit over the top! I would still like the cam to run for a couple of hours, just not six.

you can DIY something, a couple of threads here already on doing the same

 

[Jez]

I could...and I'm quite confident in wiring sound systems and hardwiring dash cams...but when it comes to car electronics I'd rather stick to products which I know work. I already know that my bmw might be fussy about where I hard wire the BDP from, so I'd like to keep it as simple as possible.

 

[jokiin]

I could...and I'm quite confident in wiring sound systems and hardwiring dash cams...but when it comes to car electronics I'd rather stick to products which I know work. I already know that my bmw might be fussy about where I hard wire the BDP from, so I'd like to keep it as simple as possible.

for a BMW you may need to go direct to the battery

 

[Jez]

for a BMW you may need to go direct to the battery

Hi Jokiin,

I've seen people mention this kind about BMWs but haven't seen anything definitive. Have you read anything in more detail anywhere or a solution? I read that hard wiring to the battery could cause issues because it's bypassing the fusebox and there would be a power draw that the car cannot detect.

Btw it's a 2009 model, E82 1 series, so not like some of the newest BMWs.

 

[jokiin]

late model BMW's have a function where the computer can selectively turn off circuits with an unexpected current draw so parking mode is not very straightforward on these

 

[Jez]

Do you know which models might have an issue with this?

For other people wondering about BMWs - I found a thread on a BMW forum from people that have had success using fuse taps http://www.e90post.com/forums/showthread.php?t=927022

It's strange that some people have issues with BMWs but then others just tap into a fuse with no issue. Maybe there are just a few select models which are affected.

 

[niko]

Many new BMW are working fine with no errors if to tap into RV mirror autodimming loom, but its always test n try from model to model.

 

[Jez]

Thanks Niko. I've got a multimeter, I'll just give it a go and if one fuse doesn't work then I'll try another. I'm sure it'll be fine, I'll report back how the install goes.

 

[Jez]

I'm going to get the Vico Power Plus, thanks for the link chris. It's not much more expensive than other products and I like the extra features.

The one thing I have noticed though is that the output current is 1A rated, 2A max. I plan to connect two dashcams, approx 500mA each so I'm assuming this is ok.

The blackvue power magic pro is the same output current (1A rated, 2A max), however the multi safer is apparently 8A (https://dashcamtalk.com/forum/threa...charge-prevention-device-ms-multi-safer.4603/)

I don't suppose this matters to me, but would do if someone wanted to connect 3 or 4 dash cams. On the Vico Power Plus it might blow the inline fuse.