This neat little build has everything a motorcycle/quad battery could need. If it is discharged, it is recharged, if it is charged, it keeps the voltage at a constant level (trickle charging). But this is not the end of his repertoire. It regenerates the battery that was previously treated badly, reverses the sulfation process by changing the charging current, and can even prevent a short circuit. And it also has ambidextrous protection. If you wire it the other way around or short it out, it will warn you instead of doing damage.