The Dacawin Automotive Smart Portable Battery Charger contains a winter and summer mode for charging efficiency during the various seasons. The Amazon page goes out of its way to mention it will take a little longer to deliver, though, which seems a little strange. If you need one now, check out our best battery chargers list for more great options!\r\n\r\nWhy We Like It - Enhanced Automotive Portable Maintainer Motorcycle\r\nThe Dacawin Enhanced Automotive Portable Maintainer Motorcycle offers many (and we mean many) safety features to help your battery live the longest life it can. The LCD Display is bright, backlit, and easy to read. Finally, the Dacawin can charge a multitude of battery types ranging from cars to motorcycles and even lawnmowers.\r\n\r\nPerformance\r\nThe Dacawin Battery Charger Maintainer Pulse Repair main selling feature is the amount of machines it can charge. Cars, motorcycles, boats, and even lawn mowers are compatible with the Dacawin charger. Of course, if you only need to charge one thing, like your car, consider the DieHard 71219 Battery Charger Maintainer. The Dacawin offers three-stage, automatic charging to protect your battery from being overcharged. Finally, it charges a plethora of battery types: SLA, WET, MF, FLOODED, GEL, VRLA, AGM, and EFB batteries are all compatible.\r\nDesign\r\nThe Dacawin Enhanced Edition Car Battery Charger includes a bright, backlit LCD display so you can see the charge level, voltage, and current without issue. Like the Ampeak Battery Charger Maintainer Automatic, the Dacawin Pulse Repair Charger Pack also features a winter mode charging option for those of you who live in an area where temperatures fall below freezing. If not, the features a summer mode charging option too. Finally, the Dacawin is intelligent microprocessor controlled and adjusts the charge current to maintain usability on your battery.\r\nValue\r\nThe Dacawin Maintainer Pulse Repair Charger offers many safety features such as reverse polarity protection, over-current protection, overload protection, over-voltage protection, overcharge protection, and over-temperature protection all in an effort to save your unit\u2019s battery life and have it live the longest life it can. It\u2019s currently unavailable on Amazon, unfortunately, so we have no idea if it qualifies for free shipping, but the description does make a point to inform us that the delivery date will be longer despite what Amazon says. If you need your battery tenders immediately, check out the Schumacher SC1281 Automatic Battery Charger.\r\nEnhanced Automotive Portable Maintainer Motorcycle Wrap Up\r\nThe Dacawin Portable Battery Charger Maintainer\u2019s main selling feature is the multitude of machines and battery types it can charge. If you have a machine or battery that needs charging, the chances are good that the Dacawin charger is compatible. It\u2019s unfortunate about the delivery time, and the LCD screen is a little dated. But if it\u2019s legible, who cares?