Is this okay for the batteries

MannyM0E · February 13, 2018, 2:52am

So I have batteries with 5.5mm bullet connectors and I would connect 3 batteries in series from negative to positive. I get scared when doing this, so I’m wondering ?? Could I just cut the bullet connectors off and just solder some xt90. This way I could make a xt90 series connector to connect my batteries in series ??

GrecoMan · February 13, 2018, 2:58am

yes. don’t fuck up polarities or cut wires at the same time.

ZackoryCramer · February 13, 2018, 3:01am

Yes, just make sure you only leave one pole exposed at all times. And double check with the xt90 plug polarity which should be labeled on the sides.

MannyM0E · February 13, 2018, 3:02am

What Pole ?

ZackoryCramer · February 13, 2018, 3:03am

Pole as in positive or negative.

banjaxxed · February 13, 2018, 5:29am

MannyM0E · February 15, 2018, 4:22am

On the xt90 +/- labels does it matter if I put a positive one the + ? Because it seems impossible if that’s the case here ??? I know how to connect my batteries in series just by going negative to positive with battery {A} being the negative and battery {C} being the positive. This xt90 throwing me off Side note: the cutter is my vesc lol

pat.speed · February 15, 2018, 5:03am

I think you should put the connectors on the battery the right way first and then orientate the connectors on the harness so that it will work properly

MannyM0E · February 15, 2018, 5:05am

They are dry set the right way. The harness in the picture I’m not using I just placed them there so I could have an idea. I would be making my own xt90 harness

b264 · February 15, 2018, 5:06am

The electrons don’t care. It could matter if, for example, you sold your board one day and someone else (or an older you) worked on it and got confused and made a lithium-polymer rocket by accident

MannyM0E · February 15, 2018, 5:08am

Hell yea cool thank you (Would keep that in mind in future if ever were to sell it) Time to get to work

GrecoMan · February 15, 2018, 11:42am

don’t EVER work on electronics on carpet

also, if you’re asking whether you need to solder + to + and - to - then yea, you do. otherwise you’ll plug it into the vesc and get some instant smoke

MannyM0E · February 15, 2018, 11:36pm

I’m making a harness so I’m confused how that’ll work. At work so I gotta see again once I get home

GrecoMan · February 15, 2018, 11:38pm

ahhhh you’re making a harness. sorry didn’t see that

so yea, in that case follow what everyone else said, just make sure it has your full attention. also, the last connector (one that connects to the vesc) MUST have the proper polarity. good luck!

jmasta · February 16, 2018, 4:40am

You don’t need a series harness, nor do you need to cut off the connectors and use XT90s. The bullet connectors can be put directly in series. Plug A+ into B- and then B+ into C-

MannyM0E · February 16, 2018, 5:07am

That’s what I’m doing now. But I like the idea of the harness because it seems safer