LiTime 12V 40A DC to DC Battery Charger fit for 12V LiFePO4, Lead-Acid, SLA, Gel, AGM and Calcium Batteries, 3-Stage Charger for RVs, Boats and Yachts

【COMPATIBILITY】Knob operation makes it convenient to quickly select the type of battery that needs to be charged. The charging and discharging current of the charger is 40A, with high efficiency and adaptability to larger capacity battery packs;There is a low current port that can limit the charging and discharging current to 20A.There are two charging and discharging current options, 20A and 40A, which are convenient for use in multiple scenarios. 【SMART MULTI-STAGE CHARGING】The 12V 40A DC to DC smart charger change different charge mode 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).It can optimize the charging efficiency of different types of batteries and extend their service life. 【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 the operation safety. It also isolates the input and output to prevents voltage transfer errors and interference with home battery charging. 【WIDELY USED】The compact and robust design of LiTime 12V 40A DC to DC charger makes it suitable for RV's, commercial vehicles,boats,yachts and many more applications.The output end can not only be connected to a service battery, but also be directly used with a DC load. 【FAST SERVICES SUPPORT】We provide professional technical support and customer service as phone support or online services with quick feedback within 24 hours. If you have any questions, please feel free to contact us, we will do our best to meet your needs.