BatteryMINDer Model OBD-48: 48V On-Board Battery Charger/Maintainer/Automatic Full-Time Desulfator - with SmarTECHnology EXTENDED BATTERY LIFE - Automatic full time desulfator reverses sulfation (a buildup of lead sulfate crystals) the primary cause of early battery failure by using a patented range of high frequencies to safely remove sulfation and recondition weak batteries. Sulfated batteries once considered beyond recovery can now be brought back to long-term useful condition. Extending battery life up to four times when compared to new batteries not being properly maintained. For all 48 Volt Lead-Acid Batteries but not limited to: Flooded (filler cap / maintenance-free / VRLA / SLA), GEL, AGM (Optima / Odyssey / etc.), starter, deep cycle and hybrid. INCLUDED  Included Model OBD-48, DC cord with ring terminals (built in), DC input with quick connector (SAE). Not for Aviation Use.