Concorde Sun Xtender-PVX-1040T

I've had one of these Concorde Sun Xtender 104 amp hr batteries powering a tiny cabin with ZERO maintenance and ZERO issues although it's finally showing signs of not taking a full charge anymore after 5 years of daily use. But it's been charged and cycled daily in constant but light duty. It's wired to three small solar panels (180 watts total) through a simple solar charger and this single battery is good for all my cabin needs. I can charge my cell phone, run my computer, power my LED lights, run the water pump and I've even used a 110v circular power saw with an inverter to build a little deck and the battery handled powering the saw, albeit during the day when the sun was also recharging it. Quite impressed considering all my other regular lead acid batteries only seem to last about 2-3 years and sitting unused seems to kill them even faster. It's not a cheap battery but if you have to rely on only one and you want it to last more than a couple years, I wouldn't hesitate to get this one.