gtranquilla
RadioActive
If you search hard enough you can always find someone who provides compromised advice! But for 2 x 2200 mah batteries you could possibly get by with 16 awg at least for awhile.
F550 Radio Setup
- Thread starter Charlie.
- Start date
gtranquilla
RadioActive
No.... the purpose of the balance plugs is to sense and regulate the battery recharging, storage and discharge or recycling processes. Once the batteries are installed on the MutlRotor craft, their job is to simply provide the power needed to fly.
In the first comments of this page it says something about it:
http://www.diydrones.com/profiles/blogs/xt-60-parallel-battery-adapter
Why is this guy connecting them together?
http://www.diydrones.com/profiles/blogs/xt-60-parallel-battery-adapter
Why is this guy connecting them together?
OneStopRC
Dirty Little Hucker
16 AWG? are you serious? the batteries have 10 or 12 AWG, so why would anyone suggest 16 AWG?
I am a certified electrician, qualified in both medium and low voltage. Never would I under rate my supply wires lower than the source, accident waiting to happen.... Max load on 16 AGW is 22 AMPs, with load on that wire, it will get hot and your current carrying capacity will drop.
Personally, for the cost of the wire, I would go to either 12 AWG = 41 Amps or 10 AWG = 55 Amps. Do you really want your investment dropping from the sky?
I am a certified electrician, qualified in both medium and low voltage. Never would I under rate my supply wires lower than the source, accident waiting to happen.... Max load on 16 AGW is 22 AMPs, with load on that wire, it will get hot and your current carrying capacity will drop.
Personally, for the cost of the wire, I would go to either 12 AWG = 41 Amps or 10 AWG = 55 Amps. Do you really want your investment dropping from the sky?
gtranquilla
RadioActive
It's the same as a Y connector except there are no interconnecting wires. Problem is you still have to plug the entire assembly into another connector to your MR because the bottom connector is a female connector and the load side has to be male connector every time...... The concept of isolating one battery output from the other to prevent a deadshort if one output falls below the other is good in theory but problematic in practice, e.g., obtaining two diodes with adequate forward bias amp rating is just one issue.....
OneStopRC
Dirty Little Hucker
That is what I was thinking.... lol
Just curious...
Why exactly is it that the flashing red light on my NAZA should go away when using 2 packs in parallel? As my 5000mah are 25C surely they can provide 125A at any time, and don't F550s hover at around 30A? My packs were delivered at 3.8V per cell, balance charged them to 4.2/cell, used them for about 5 minutes each and then got scared by the red light and when I put them onto charge they were still above 3.8V/cell.
Why wouldn't a 25C battery be able to lift a Hexacopter if it can provide 125A continuous?
Why exactly is it that the flashing red light on my NAZA should go away when using 2 packs in parallel? As my 5000mah are 25C surely they can provide 125A at any time, and don't F550s hover at around 30A? My packs were delivered at 3.8V per cell, balance charged them to 4.2/cell, used them for about 5 minutes each and then got scared by the red light and when I put them onto charge they were still above 3.8V/cell.
Why wouldn't a 25C battery be able to lift a Hexacopter if it can provide 125A continuous?
kloner
Aerial DP
that things never worked very good
but to answer your question in general, a pack can be damaged from one over discharge to the point a 25c quickly can turn to 10c....... and still say 25c on the outside
that voltage warning thing looks at voltage under a load, if the voltage sags hard, it can trigger even a properly setup alarm. i'd set my first alarm to 14.2 in 4s and the last call land at 13.9 volts. That dam thing landed me in water twice so i disabled it on mine, i'd rather get a few more seconds and really plow my packs into the dumpster than land in the water again
but to answer your question in general, a pack can be damaged from one over discharge to the point a 25c quickly can turn to 10c....... and still say 25c on the outside
that voltage warning thing looks at voltage under a load, if the voltage sags hard, it can trigger even a properly setup alarm. i'd set my first alarm to 14.2 in 4s and the last call land at 13.9 volts. That dam thing landed me in water twice so i disabled it on mine, i'd rather get a few more seconds and really plow my packs into the dumpster than land in the water again
What voltage per cell would you say is over discharged? I have never seen the voltage on my Turnigy accucel 6 drop below 3.8v for my battery cells.
When I first got my batteries and charged them for the first time, when I used them on my hexacopter I got the red lights after a bit even then!
When I first got my batteries and charged them for the first time, when I used them on my hexacopter I got the red lights after a bit even then!
kloner
Aerial DP
they can come damaged. Have you ever read the internal resistance? When damage occurs, that's how we measure it
icharger, thunderpower, FMA chargers have it, maybe others.
Even a bad solder job on a connector can make ir rise,,,, why you look at the individual ir and the main lead ir and compare the difference to rule out a bad solder joint. the pigtail going to the rig, the solder on the distro board all have an affect. the dji monitor sucks. if you have something like a eagle tree logger or an osd and fpv camera you can see the numbers from an independant source.
discharging below 3.7 is considered over discharged. if a pack ever gets more than 80% put back in it can damage them. if they ever got hot, stored in a car, they can be damaged. if they were stored a long time before you got em they can be damaged. if they were ever charged and stored they can be damaged. lipos are a fragile way to store power but it comes out fast and is light enough to make up for the difference
icharger, thunderpower, FMA chargers have it, maybe others.
Even a bad solder job on a connector can make ir rise,,,, why you look at the individual ir and the main lead ir and compare the difference to rule out a bad solder joint. the pigtail going to the rig, the solder on the distro board all have an affect. the dji monitor sucks. if you have something like a eagle tree logger or an osd and fpv camera you can see the numbers from an independant source.
discharging below 3.7 is considered over discharged. if a pack ever gets more than 80% put back in it can damage them. if they ever got hot, stored in a car, they can be damaged. if they were stored a long time before you got em they can be damaged. if they were ever charged and stored they can be damaged. lipos are a fragile way to store power but it comes out fast and is light enough to make up for the difference
gtranquilla
RadioActive
Kloner....
I assume that would be 3.7 per cell volts measured after the load is disconnected.
I assume that would be 3.7 per cell volts measured after the load is disconnected.
kloner
Aerial DP
yes,,,, a damaged 40c 4s pack can sag to 13 volts under a load and be half the mah it just took worth of power damaged but still rest 3.7 a cell. out to a perfect pack will barely sag at all no matter how hard you push it.
IR is the only way to measure what you got, it is what they look at when grading a pack to call it 20c, 40c, etc. It is a constant variable in teh math of the pack and it is what rises as a pack times out, cycles out or is burned out. anything more than 50 mohms is in teh trash at my house,,,, that's one slightly over discharge or one day charged left in a hot car
i'm still putting my money on the dji voltage monitor is just a pos, alot of people come along wishing it worked but the fact is it'll just land ya where you coulda made it without the dam thing trying to land early for ya.
IR is the only way to measure what you got, it is what they look at when grading a pack to call it 20c, 40c, etc. It is a constant variable in teh math of the pack and it is what rises as a pack times out, cycles out or is burned out. anything more than 50 mohms is in teh trash at my house,,,, that's one slightly over discharge or one day charged left in a hot car
i'm still putting my money on the dji voltage monitor is just a pos, alot of people come along wishing it worked but the fact is it'll just land ya where you coulda made it without the dam thing trying to land early for ya.