Bottom or Negative Strip welded to battery. Use the battery control board to ensure the direction of the Top or Positive Strip.

Spot weld the Top or Positive strip the same way as prior done with the negative. Place the strip at a 180 degree from the negative

Now bend the Bottom or Negative strip up while having it tight to the body of the battery. Use something like a rubber band, or zip tie etc to ensure it is close to the body.