Automatic Charger and maintainer for all 6 & 12 V lead-Acid batteries, conventinal, maintenance free, gel or AGM. Ideal for long term maintenance of the batteries of irregularly or seasonally used vehicles, vintage & collectors vehicles, gliders, small aircraft & boats, & battery-powered industrial ppliances. Best suited to Batteries of capacity up to about 40 AH. Very easy to use: select 6V or 12V charging output according to battery type, and then connect the battery and mains power. The rest is fully automatic. No risk of overcharging, voltage and current are regulated exactly according to the battery manufacturer's specifications. Safe and foolproof. No worries about wrong connections or accidently shorting the battery clamps. No risk of overheating- automatic temperature control. Supplied whit battery clamp and refused connection set for direct connection to the battery