Altronix BL3KSP Battery Leads Kit consists of red and black 18” battery leads and three (3) yellow 8” battery jumpers. It allows for connection of up to four (4) batteries to a power supply/charger for up to 48VDC backup. Battery leads feature 0.25” pushin connectors compatible with Altronix batteries’ terminals on one end and a properly stripped wire on the other. Jumpers feature 0.25” push-in connectors on both ends.