#Where do these wires go?

122 messages · Page 1 of 1 (latest)

valid inlet
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Just had a bit of an oopsie while I was zooming around my backyard and when i went to check on the drone i noticed a few wires sticking out of my battery but i couldn’t and still can’t figure out where they came from and where they go. It’s an ovonic 6s lipo if that helps. Thank you!

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I accidentally posted this 3 times, sorry about that!

zenith gate
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you broke the balance plug

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the wires are from the balance plug

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the wires should be in the balance plug

if they're not, they'll spark

little cedar
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While repairing this is not impossible, it is not something that I would recommend if you don't already know exactly how each of those wires is connected. Replacing balance plugs is a delicate operation because of how careful you have to be not to short the Lipo cells together in the process

raw turret
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@little cedar ehh, I think that in many cases it's actually quite easy

little cedar
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If you or I were the one doing it, I'd agree

raw turret
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Just make sure to tape pins up if you have multiple out, and the just transfer them over one by one to a new housing, replacing any broken pins with new ones by splicing them on from a sacrificial extension

raw turret
raw turret
valid inlet
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When i looked into the housing all the holes already have a wire in them, which is why I’m confused to where they go

little cedar
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6S lipos have a 7-wire balance plug. You broke two pins completely off the plug.

valid inlet
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Oh wait yeah, I just noticed part of the housing is missing

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that might be a little bit of the issue

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it must’ve snapped off with the crash i guess l, Don’t know how i didn’t notice it earlier

raw turret
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first of all

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tape the loose pins up

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if they short out, bad stuff will happen.

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Afterwards, order some 6S balance extensions if you don't have them yet.

valid inlet
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Like put electrical tape over the metal ends?

raw turret
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yeah

valid inlet
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alright

raw turret
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Do you own pin crimping tools for these type of pins? @valid inlet

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just checking before I write something up

valid inlet
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I believe I do

raw turret
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That's a first

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JST-XH is the specific type

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in that case, do you know how to depin and repin these connectors?

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If yes, then I will tell you just one thing - the wires must be in the correct order

valid inlet
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I haven’t don’t that before. I tried once with a 1s battery that came loose but it just kept coming out

raw turret
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well, if either of those 2 pins is damaged, then you have 2 options

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A) snip them off (with a bit of wire to give leeway) and splice on a new pin+wire salvaged from an extension

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B) remove the pin and crimp on a new one

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to figure out the order of those 2 pins, you need to measure their voltage against the next pin in line

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there should be 1 cell of voltage between each two adjacent pins (1-2, 2-3, 3-4, etc)

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(so like 3.2 to 4.2V)

valid inlet
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Alright none of the pins are damaged so i’ll. go with B. If i’m not confident with doing this, would the best option just to buy another since they’re only about 30$?

raw turret
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in that case you just slap them into a new plastic housing

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can you get good macro shots of those pins?

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they have a retention tab on one side (the flatter/rounder "top" side)

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I just wanna take a look at the retention tabs, because those are necessary to hold the pins in the housing

raw turret
raw turret
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that lifted part

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that's what makes the pin snap into the plastic housing

valid inlet
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alright, gimmie a minute, i gotta intake the pins

raw turret
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intake the pins
@valid inlet ?

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I'm only asking about the 2 that came out

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the rest stayed in so those are fine

valid inlet
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untape*

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autocorrect, sorry

raw turret
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ah

valid inlet
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sorry about the wait, it was tricky getting the pins in focus

raw turret
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I can see the pin retention tab in the 1st picture. 2nd picture is from the wrong angle for me to be able to tell anything

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okay I am officially too tired to think straight

valid inlet
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2nd picture is where the retention tab should be i think it’s pushed in or smth

raw turret
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it's probably still there, just needs to be pushed back out

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that is a repairable issue

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with some sewing needles

valid inlet
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alrighty

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wouldn’t touching it with metal make a spark though?

raw turret
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as long as you're not shorting it to another battery pin, no

valid inlet
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cool

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since i’m not too confident with my skills and i don’t mind spending some money on some more batteries, how could i go about disposing the battery? i would think to use the destroy feature on the battery charger but i can’t really do that since the connector is broken

raw turret
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honestly

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why

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all you need is to bend one tiny piece of metal up

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and then just move 7 wires over to a new housing

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one by one

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I don't like the idea of destroying a perfectly good battery xD

valid inlet
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alright

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I can give it a shot

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for the new connector should i just get the plastic header or the header with wires already attached

raw turret
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that's up to you

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I usually just buy extensions

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they're useful as extensions until i need to sacrifice them

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if I need housings, I have them

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if I need pins, I have them

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if I need wires, I have them

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if you manage to fix that one pin, then realistically you only need the plastic housing

valid inlet
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alrighty, and should i push the pins down? since in the picture it looks like the pins aren’t fully on the wire, don’t know if that’s how it’s supposed to be or not

raw turret
valid inlet
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i’m not really familiar with electrical stuff so sorry if this is an obvious question

raw turret
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nah I just find it hard to answer your question without seeing the pins in person 😄

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can you send a picture of the pins from the opposite side?

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the side opposite to the retention tab

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if you want to, you can take out one of the "healthy" pins out from the connector and compare them side by side (carefully :D)

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!repin

fluid inletBOT
raw turret
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this might be useful to you

valid inlet
valid inlet
raw turret
raw turret
# valid inlet Thank you! I was literally just about to ask if there was any videos you suggest...

https://www.youtube.com/watch?v=5wbLEwuMy3I
this will probably be even better

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If your lipo balance plug got chopped by a prop, he...

▶ Play video
valid inlet
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perfect, thanks!

raw turret
valid inlet
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didn’t think this was such a popular subject

raw turret
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hah

valid inlet
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is there a way to prevent this other than crashing?

raw turret
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everyone does this at least a couple times in their flying carreer

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well, just securing the plug better

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if it can't get into the props, it can't get chopped

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well, tree branches can also wreck them

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some people use rubber bands to hold them to the batteries, others use 3D printed (TPU) holders

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everyone eventually figures out what works for them

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it depends quite heavily on the batteries and the drone

valid inlet
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i don’t think it went into the props, it could’ve though, i always check to make sure it’s not near them at the beginning of a flight so i guess it could’ve been bumped into them

raw turret
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this kind of damage is most commonly caused by a prop strike

valid inlet
raw turret
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haha

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would the TPU happen to be sainsmart?

valid inlet
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i’m not sure

raw turret
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well, was worth asking just for the fun

valid inlet
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all i know is that it’s red

raw turret
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