A few years back now I got fed up with losing good batterys to storage over the winters. Out of frustration I bought a Yuasa maintatainer with connectors for two applications. One connector a standard style like clamps for jumper cables and the other connects permanently to the battery posts. The batterys were our motorcycle and our 1990 Buick 9 passenger limited wagon. I ended up using those batterys 1 year longer than there warranty ratings. I had one device and two connectors that were wired with quick couplers so I would rotate, charging. My question is. Is it any trade off for what you pay in electricity worth the trade off how much it costs to replace batterys? Any body out there use a Schumacker maintainer or can anyone weight in. I may have not phrased the question crorectly but I hope you catch my ponderance.