WirthCo 20099 Battery Doctor 3-in-1 Surge Protector

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” ring terminal leads for all 12 volt batteries. Peel and stick Velcro provides instant installation. LED indicators offer easy reading.