Battery Doctor 3-in-1 Battery Surge Protector/Monitor w/ 20" leads 20099 19-3515

Secure and determine the condition of your battery and charging system with a single push of a button. Also protects your engine computer and 12 volt accessories from damaging surges when jump starting or recharging. Comes with 18(TM) ring terminal leads for all 12 volt batteries. Peel and stick Velcro provides instant installation. LED indicators offer easy reading.