Mroinge MBC010 Automotive Trickle Maintainer 12V 1A Smart Automatic Charger for Car Motorcycle Boat Lawn Mower SLA ATV Wet Agm Gel Cell Lead Acid Batteries Easy connection to motorcycles and vehicle battery using the included big battery clips and O-ring terminals. DC cord total length of 12ft. Spark proof during lead connection, reverse polarity protection, overcharging protection and short-circuit protection, with over temperature protection. Perfect for charging all 12-volt lead-acid, flooded or sealed maintenance free batteries (AGM and GEL cell) Complete 4-step charging program (Initialization, Bulk Charge, Absorption Mode, Float Mode) allows for optimization of battery power, without overcharging Automatic charge cycle functionality switches to float mode after fully charging the battery. The built-in two color LED indicates stage of charger. Two year . Intelligent IC chip with smartcharging program charge andmaintain the batteries properly. Connect and disconnect battery charger in seconds. Once connected, the battery charger manages your batterys health on its own. Zero current draw from the battery and low power consumption. Comply with the highest energy saving standard. Battery charger checks for the correct connection before giving power. Battery charger checks for the correct connection before giving power. Battery charger will automatically detect the internal temperature, if Over-Temperature will be cut-off the output. Battery overcharging protection. Output Short-circuit protection. Made of High Class PC <span class="a-text-bold">Initialization:</span> Initialize diagnostic battery performance and desulfating the battery through 17V pulse. <span class="a-text-bold">Bulk: </span>Major charging stage where the battery receives the majority of its charge. During this stage the battery brought to 75 - 80% of its charger. The MBC010 charger delivers maximum current until the terminal voltage has risen to the full charge level for Normal battery. <span class="a-text-bold">Absorption: </span>Completes the charge up to virtually 100% at a constant voltage. The current tapers off after the current reached the minimum level. <span class="a-text-bold">Float:</span> Maintenance charging at constant voltage, keeping the batteries at 100% charge. Float mode chargers indefinitely without damaging the battery. The image shows the duration of the bulk step up to about 90% state of charge. These data is measured under an ideal condition, just for reference. Firstly, Correct connect the battery. Then, Connect the AC power supply. <span class="a-text-bold">FLASHING RED: </span>not charging battery, reverse battery, battery error. <span class="a-text-bold">SOLID RED:</span> battery charging. <span class="a-text-bold">FLASHING GREEN:</span> battery greater than 80% charged. <span class="a-text-bold">SOLID GREEN:</span> full charged and maintaining. 1 x MBC010 battery charger &amp; maintainer 1 x DC output cable with clips connector 1 x DC output cable with O-ring connector 1 x Instruction manual