DC Power Alligator Clips for Chargers w/ 4mm Female Bullet Banana Holes by GT Power Use these convenient Alligator Clips to connect your battery charger to your 12V car battery when out in the field. Most chargers come with a DC Power Cable that has 4mm Male Bullet/Banana Plugs at the end. This can make it difficult to connect the charger to your 12V battery. These clips will connect to your 12V battery and provide a 4mm bullet hole for your charger's DC Power Cable. Convenient 4mm Bullet Hole. Plug your DC cable right into this alligator clip! Pair this with the GTP1306 DC Power Cable for Chargers (1ft) and the GTP1300 DC 2 Foot Extension Cable