Check the listing for details. Optimate 3. Condition: New. Listed at 101.13 USD. OptiMate 3 is totally automatic and fully protected against user errors. There are no switches. Short-circuiting the charger output resets the programme, without sparks or blown fuses. Affordable, compact, intelligent and forgiving of errors, OptiMate 3 is the perfect tool for regular or long-term maintenance of batteries not in daily use. • For lead-acid 12V powersport battery types including lead acid (Pb), STD (with filler caps), AGM, GEL (sealed VRLA), deep cycle & EFB. FEATURES: The all in one tool for 12V battery care at home. Diagnoses, recovers, charges, tests and optimally maintains automatically. SAFE: No risk of overcharging. Totally safe for vehicle electronics. Sparks suppressed. Safe for long-term battery maintenance. Automatic shut-down if short-circuited or battery disconne.