International battery check
Hello I am looking at batteries and I think I've found the right one. I would like the one with the connector but not 100% sure on polarity
https://www.keaworkshop.com/product/301230-lipo-battery?variant=195508
Mechanical Keyboards | Kea Workshop NZ
301230 3.7V LiPo Battery
We are a New Zealand based supplier of 301230 3.7V LiPo Batteries. Buy 301230 3.7V LiPo Batteries at Kea Workshop today!
9 Replies
Hello! Thanks for reaching out.
Looking at the battery you linked, it appears to have the correct size (301230) and the correct JST connector (PH 2.0mm). However, the polarity is reversed compared to the batteries we sell and that our PCBs are designed for.
Using a battery with reversed polarity could damage your nice!nano.
For international customers, we recommend checking out the options listed in our battery guide: https://docs.typeractive.xyz/build-guides/corne-wireless/batteries#international-customers
Specifically, the AliExpress link for our battery manufacturer or the Ampul store link for EU customers are good options that have the correct polarity.
If you have any other questions, feel free to ask!
Batteries | Typeractive.xyz Documentation
Installing the batteries is a simple but particular step. This guide will go over the positioning and installation of them.
how do you know the polarity
That's a great question! I know the polarity by comparing the connector on the battery you linked to the connector on the batteries we sell.
On the battery you linked, the red wire is on the left and the black wire is on the right when looking at the connector with the clip facing up.
On the batteries we sell, the black wire is on the left and the red wire is on the right with the clip facing up.
This difference in wire order indicates reversed polarity.
Let me know if that makes sense!
I would like a human to confirm
The way to check is to look at the red wire in relation to the ridge that keys the "top front" of the connector. I think of Typeractive's batteries as "red on the right" holding the connector as though you are about to plug it into a receptacle in front of you. Adafruit batteries, by contrast, have "red on the left", and stuff you get from AliExpress or wherever is a toss-up which polarity they use.
The picture you posted has red on the left, the opposite of what Typeractive boards expect.
Comparison: Typeractive Corne with the white keys, my homemade keypad with black and orange keys. The Typeractive battery has red on the right. The other board, which I designed to work with batteries I got from Adafruit, has red on the left
and in case it helps contextualize things, the red wire is conventional current positive, sometimes referred to as the "hot" wire
thank you :peepo_heart: