The 2-Pin JST-PH 2.0 connector is common on LiPo batteries used in drones, RC cars, toys, and electronics boards. One issue is polarity: the negative and positive wires can be arranged in two ways. If the polarity is reversed compared to your device, plugging it in can damage components that lack reverse-polarity protection. Always check the orientation before connecting. If it’s reversed, the polarity can be easily corrected by removing and swapping the crimped wires in the connector housing.
This is a companion discussion topic for the original entry at https://community.robotshop.com/tutorials/show/reversing-the-polarity-on-lipo-battery-jst-connectors