Comes with global input (100-240V) and is 33% more powerful than its predecessor Batteries' status can be checked at a glance 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 before checking how well the battery can retain the charge OptiMate 3 will then maintain the battery/batteries at full charge safely for months at a time and prolong their life by up to 400% Diagnoses, recovers, charges, tests and optimally maintains, automatically 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 An all-in-one tool for 12V battery care at home or at the shop