Hello!
Im currently building a solar powered RAK 19007 RAK 4631 Meshtastic node. I’ve been warned about polarity on the JST connector for the battery.
I think this is wrong polarity?
EDIT: Picture above show the WRONG polarity.
Welcome to the forum @Rvenes
Wherever you found that picture, IT IS WRONG
If you look on the PCB, you see the PLUS sign printed that marks the positive pole of the battery and the solar panel input.
Thank you for reply, I took that picture when i was trying to figure it out!
Don’t really want to open the JST connector so fixed it this way. Had to solder on some batteries anyway.
The problem is, there is NO standard on these JST connectors. I bought battery cables with JST connector two times from a local shop, one time it fit directly with WisBlock, the second delivery was reverse 
I found out there is no reverse polarity protection… Is there a plan in the future to implement some protection since this is apparently quite an issue? I have a box full of RC flight batteries with reverse polarity from the Wisblock.
@Rvenes
I know it’s stupid, but I believe I’m not the only one - I found this image via google images and assumed the polarity is correct. sent the 19007 & 4631 straight to the bin. I would suggest to edit the image to include disclaimer about wrong polarity, so people would not do the same mistake like me. thank you in behalf all sloppy tinkerers out there.
Welcome to the forum @recrof
Where did you find that image (that is not showing in your post).
Valid information is in our Documentation Center only, we have no control what others are posting.
Beside of the correct image in the Documentation Center, every Base Board has a polarity indicator printed on it.
the image is in first post by OP. it was stupid of me to not look at the documentation, I know.
For those who find this and want to know what to do. You can swap the polarity of the wires of the JST connector. It’s best to do it with two people.
You’ll notice there is a small nub on the wire that is stopped by the white tab on the top of the connector. If you use a small paring knife you can lift the tab up slightly (be really gentle and don’t have a lot of knife under the tab or it will bump up against the metal nub) and then have a second person push down on the metal nub while pulling the wire out of the connector. Once they’re both out, slide the wires back into the proper slot! Far less work than re-soldering or splicing.
It’s on you if you’re too rough, so be gentle. Just want newbies to know it’s possible.