The new battery you receive is not fully charged, so you can charge it fully first. The 2-pin discharge terminal (+ -) can be found in the product image. The red wire on the discharge cable is connected to the positive connector (+), and the black wire is connected to the negative connector (-). Note: in the event of a quality problem, we will provide free after-sales service within 1 month and cover the return shipping costs. If you purchased the wrong item or no longer want to buy it, you will need to cover the return shipping costs.