Renogy 12V 20A AC to DC Lithium Iron Phosphate Battery Charger, 2 Year Warranty Renogy 12V 20A AC charger is designed for lithium batteries (LifePO4 Battery) The charger has a 3-stage intelligent charging design (CC/CV/trickle) to ensure it charges the lithium battery quickly and efficiently This battery charger has 5-layer protection functions to realize comprehensive monitoring and protection of the battery This charger is suitable for RVs, motorbikes, boats, and camper-van Features: Born for Lithium Batterie: This battery charger is designed for lithium batteries When the lithium battery triggers the low temperature/low voltage while charging, the BMS will turn on the protection, which means the lithium battery cannot be charged and needs to be activated This charger provides a lithium battery activation function that quickly exits the protection mode and recharges Along with CE and UKCA certification, it provides a safe and stable AC charging environment Strong Adaptability: This battery charger has a wide AC input voltage range, 100-240 VAC 50/60Hz, which is compatible with various needs The charger comes with an alligater clip battery charging cable which is designed to allows users to quickly establish the connection between the battery and the charger Smart Charging: The charger has a 3-stage intelligent charging design: high current (cc), constant voltage (cv), trickle It can accurately identify battery voltage and automatically switch charging mode and provide fast and efficient charging for lithium batteries; the charger's efficiency can reach up to 92% Build-in Safety Protection: The charger has five built-in protection functions to ensure charging safety, including short circuit protection, over-current protection, over-voltage protection, under-voltage protection, and reverse polarity protection The charger's indicator light can remind the wrong charging status and achieves all-around monitoring and protection Easy to Use: 3-quick-step to quickly establish the connection of battery and charger, the steps are as follows: 1 Connect the negative output terminal of the charger to the negative terminal of the battery 2 Connect the positive output terminal of the charger to the positive terminal of the battery 3 Connect the AC Charger Power Adapter Cable to the AC port of the charger