I need to charge a small lithium power pack from a device that was originally charged using a 5v USB connection. The connector on the device is damaged so I need to charge the power pack directly.
I'm not very experienced with electrical stuff so I am not sure what kind of connection it has? I've taken a photo of it with a sharpie pen for scale.
I'm assuming a need something like this?
The power pack has 4 wires. 1 Yellow, 1 Red, and 2 Black.
I don't want to strip or cut any wires so I ideally need to find a female connector of that type with wires I can solder to the USB charger.
Can anyone help with pointers on things to search for and which wires I need to solder to the + and - points?