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" Efficient Power Conversion - The PM4-100LK RV Power Converter transforms 110Vac power into 12Vdc, providing battery charging and 12V device power. Compatible with both LiFePO4 lithium and traditional lead-acid batteries, it allows seamless switching between battery types. Select the optimal battery for your needs to achieve faster charging and extended battery life Optimal Battery Maintenance - Equipped with four built-in charging modes, the converter ensures efficient and safe charging for your RV battery. These modes help optimize battery health and extend its lifespan. BOOST Mode rapidly charges the battery to 90% in just 3-6 hours, while NORMAL Mode safely completes the charging process. STORAGE Mode reduces power loss during periods of inactivity, and EQUALIZATION Mode helps prevent battery stratification and failure, ultimately extending the overall life of your battery Built-in Cooling Fan - Designed with a temperature-controlled fan, this converter ensures optimal cooling while operating quietly. It prevents overheating and maintains stable performance, reducing noise for a more comfortable and enjoyable camping experience. Additionally, it features reverse battery protection, automatically detecting and adjusting the circuit to safeguard your devices from potential damage caused by reverse polarity Overheat Protection - The battery charger is equipped with automatic thermal protection. If the device temperature exceeds the pre-set safe limit, the charger will automatically reduce the output voltage to prevent overheating damage. However, even though the high-quality charger includes overcharge protection, it is recommended not to leave the battery connected to the charger for more than 24 hours No Rewiring Needed, Installation Takes Just 10 Minutes - The Bzcovac AC to DC power converter and battery charger is designed with user convenience and varying environmental conditions in mind. It fully charges and maintains any battery type while providing ultra-clean DC power. Easily adjust the output voltage between 13V and 16.5V to customize the power delivery for different battery types or specific power needs. Perfect for RVs, automobiles, boats, car audio systems, or any application requiring battery charging and/or 12V power"