Maintaining batteries is never a bad idea. Certainly not if it can be done cost-effectively. The Optimate 1 DUO SAE guarantees a longer life span and charges accurately, controlled by a microprocessor.
It runs a four-step programme that keeps a rarely used 12V battery in good condition without over- or undercharging.
The Optimate 1 DUO SAE is suitable for any 12V lead-acid battery, batteries with filler caps/wet cell, sealed AGM (MF) or GEL batteries and 12.8/13.2V lithium (LiFePO4) batteries.
Warning!
This charger does not repair batteries. The Optimate 1 is purely for maintenance. If you are looking for a 'battery repairer', then the Optimate 4 for lead-acid batteries is better suited.
There is also a solution for specific lithium batteries, namely the Optimate Lithium 4s.