Electronic – 11.1v Lipo battery thick to thin wire connection heating up

wire

I have a lipo battery, 11.1v, 2200mah, 20C. I needed to connect to to a smaller wire because the thing I am connecting it to has a little jst connector.

So I bodgily just wired the thick wire to the thin wire and plugged it in – All works perfectly fine.

The problem is, when using it continuously the thin wire gets warm and after about a minute it gets hot.

Now I wouldnt be running it continuously like that anyway out of testing, only in bursts. But I am worried because you know, lipos are fire hazards and hot wires just arent something I am comfortable having going on.

My question is what can I do to stop the heat problem?

I thought of just rewiring the gel ball blaster with thicker wires, but that seems like the longest way to fix this.

I thought about unsoldering the thick wires from the battery and soldering the thin ones to it, but would they get hot that way? (Im new to electronics xD) I dont want to do it and the battery catches fire in my hands haha.

The other thing I was thinking, maybe someone knows of some sort of connector that is made for connecting thick wires with thin ones and restricting the current or whatever happens so the small wire doesnt get hot.

One thing I should have done before asking is check if the wires on the original smaller battery get hot with extended use. I doubt it but you never know with chinese engineering xD

Anyways I look forward to your answers and welcome myself to this community : D

P.S I tried to upload photos but I am using my phone and it says they are too large for the forum. I will try to find a way to resize then upload afterward.

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Best Answer

Well I couldnt find this forum again sadly before I went ahead and desoldered the thick wires yesterday on the lipo and added thin ones of the same gauge as the original battery.

Turns out the heat problem is gone and everything seems to be working fine. The old battery was an 11.1v too, just less mah. (Like 1000 less)

Anyway I dont know how dangerous it is to do what I just did, probably wouldnt recommend it to anyone just in case but it all seems to be working just the same but without the heat problem, ran it for two minutes continuously and no heat at all.

Thanks for sharing your knowledge guys, I learned a bit today, if the battery catches fire or explodes or I die I will be sure to let you guys know how it goes in a few weeks, just in case anyone else wondering gets the idea to do something similar they will know what the longterm result is.

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