Mroinge MBC016 6V / 12V 1A Fully Automatic trickle Battery Charger/maintainer for Automotive Vehicle Motorcycle Lawn Mower ATV RV powersport Boat, Sealed Deep-Cycle AGM Gel Cell Lead Acid Batteries Easy connection to motorcycles and vehicle battery using the included battery clips and O-ring terminals, DC cord total length of 12ft. Perfect for charging all 6V and 12V 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. Spark proof during lead connection, reverse polarity protection, overcharging / over temperature protection, short-circuit protection, Bad battery identify and power down memory function. Automatic charge cycle functionality switches to float mode after fully charging the battery. The built-in two color LED indicates stage of charger. Separate button is available to select 6V/12V mode. Two year warranty. 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 MBC016 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, Connect the AC power supply. Secondly, Choose the right charging mode(6V 12V). At Last, Correct connect the battery. <span class="a-text-bold">FLASHING RED: </span>not charging battery, reverse battery, charging mode 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 MBC016 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