Retains all the fully-automatic, 100% safe, easy-to-use characteristics of the two million OptiMates produced since 1995, but is now microprocessor-controlled, lighter and more efficient than ever Diagnoses, recovers, charges, tests and optimally maintains, automatically For batteries forgotten over the winter, OptiMate 3 will recover them from deep discharge and optimally recharge them; it will check that the charge delivered is the best possible, then check how well the battery can retain the charge An all-in-one tool for 12V battery care at home or shop Comes with global input (100-240V) and is 33% more powerful than its predecessor Batteries' status can be checked at a glance OptiMate 3 will then maintain the battery at full charge safely for months at a time and extend its life by up to 400%