Features： 1、OE NUMBER: RV converter replace part number are WF 8955 AD MBA, WF 8955 MBA. Please check the part numbers whether it suits your vehicle before purchasing. 2、ENHANCED SECURITY: Equipped with over current guard, over temperature guard, over voltage guard, and reverse polarity guard. Cooling fan runs when needed not at start. 3、VERSATILE UPGRADE: Electronic current limiting shuts down power during overload or short circuit conditions. Compatible with a variety of RV trailer camping vehicle power systems. 4、ADAPTIVE CHARGING PROFILE: Automatically adjusts charging profile to match sealed or lithium ion battery type. Maximizes battery life with multi stage charging and current monitoring. 5、DUAL BATTERY MODE: Switch between sealed and lithium cell. LED indicators show battery type selection. Offers precise charging without over or undercharging risks. Specification： Item Type: RV Power Converter Material: Metal, ABS Input Voltage: 12V OE: WF 8955 AD MBA, WF 8955 MBA Output Voltage: 105-130 VAC 60 Hz Current: 55Amp 3 Stage Charging: Bulk Charging: 14.4V, Normal Charging: 13.6V, Float Charging: 13.2V Features: Sealed Mode: Switchable between sealed and lithium cell, automatic recognition. In sealed mode, the switch is on with an orange LED labeled 'LA' on the right side. The converter operates in bulk mode at 13.6 VDC. When the reversed polarity fuse is pulled out, the LED status remains unchanged, with only the DC output interrupted. Lithium Mode: When the switch is set to lithium ion mode, an orange LED labeled 'LI' lights up on the left side while the orange LED on the right side goes out. The converter voltage is 14.6 VDC in this mode. If the reversed polarity fuse is removed in this mode, the orange LED (LI) will go out and the DC output will be interrupted. Please note that this is different from sealed mode. Package List： 1 x RV Power Converter