
I assemble lithium batteries myself for various purposes. I use 20 or 22 gauge silicone wires for the balance wires and smaller wires like this for the charge wires. Typical of silicone wires, they are very flexible. They appear to be of decent quality. I have no problem soldering these wires to the XT90 and Bullet connectors. Unlike other silicone wires I've purchased, they are not fixed. The black and red wires on them are connected together like lightning bolts. This may or may not be beneficial depending on the application. Overall I think this is a good product at a competitive price.