All major starter battery manufacturers recommend maintaining such batteries FULLY CHARGED during periods of non-use.

OptiMate 4 is totally safe for months-long connection and maintenance or irregularly or seasonally used batteries even while still connected to the vehicle, No risk of over-charging.

Electronically protected against user errors. Just connect the OptiMate 4 to your battery, the rest is automatic. There is no switch, no-fuse... and there are no sparks. De-activates automatically if conections are broken.

Optimate 4's unique diagnostic function automatically identifies deeply discharged (sulphated) batteries and applies a controlled high voltage with small fixed current for a limited period to recover them.


There is only one Optimate! Your bike deserves the best!