12v from balance plug.

[Andy66]

Ok so I want to power my vtx and cam from the balance plug, I've bought a couple of balance plug extensions that I could hack up for this.

Q, so that I get to use the 3cells so no unbalance to the battery is caused do I solder the 3 neg wires together or use only one neg?

Thanks andy

[brodjackella]

just use 2 leads from batt balance leads,black usually far right will be your negative and white(usually) will be your positive,which will give you the 12v needed.white if HK cells is the white 4th along lead.
i'll post a pic for you Andy.
contrary to what people say,very little imbalance will happen but best balance charge after every flight.
using cam and vtx will only use about 0.03 mah after a 6-10 min. flight so easy to rebalance

[brodjackella]

are you using 3 cell or 4 cell lipo?

above advice is using a 4 cell lipo

if using a 3 cell lipo,just use black for negative and far lead,4th for positive,this wont imbalance any cells

[Andy66]

Yes it's 3s battery, so do you mean to connect all black together for 3s?

[brodjackella]

no,just use black from balance lead as negative and far one at other end as positive.

[Andy66]

Just found this as example, is this what you mean brod?
http://www.readymaderc.com/store/index.php?main_page=product_info&products_id=500

[brodjackella]

yes that exactly what you do.

[Andy66]

Great thanks brod 

[MrBen]

Andy if you have more than one black wire then not all of them are negatives m8 only one of them farthest from red, best check with a multimeter if your unsure you can get them for a fiver and it saves you releasing magic smoke out of your components

[Andy66]

I've copied the one in the link and all works well. Thanks guys.

[xxpitt]

Why don't you do what you told me to do with the fat shark regulator?

[Andy66]

Doesn't work the same way m8

[Vass]

Hi guys, I've just moved to 4S lipo's now, so I think my fatshark 250mw vtx will only take up to 13v

Do you all use a ubec on your vtx?

Ta

[MrBen]

voltage regulator for 12v however i use a ubec on my 5v lawmate vtx