COMPATIBILITY The knob operation conveniently selects battery type for charging with a 60A high-efficiency output, adaptable to larger capacity battery packs. Additionally, a low current port limits output to 30A. The device offers convenient 30A and 60A charging and discharging current options for versatile use.  SMART MULTI-STAGE CHARGING The 12V 60A DC - DC smart charger changes different charge modes to match your battery type. For LiFePO4 Battery it will charge in 2 steps mode (CC, CV), for Lead Acid Battery it will charge by 3-stage charging (Bulk, Absorption, and Float), to make sure it optimally and automatically charges to 100%. It also can wake up your lithium battery after BMS protection.VARIOUS PROTECTION SAFETY This LITime battery charger with high-quality offers over-voltage protection, low-voltage protection, over-temperature protection, short circuit protection, and output reverse polarity protection to ensure operation safety. It also isolates the input and output to prevent voltage transfer errors and interference with home battery charging.WIDELY USED The compact and robust design of our dc to dc charger makes it suitable for RVs, commercial vehicles, and many more applications.The output end can not only be connected to a life battery, but also be directly used with a DC load.Note: Use the included screws (Φ5/32'' [4mm], 5/8'' [16mm]) for secure mounting to prevent installation failure or product damage.