Part Number WF-9855, WF-9855-MBA, WF-9855-AD-MBA, WF-9855AN Specification DC output voltage (no load) approx.: 14.6/13.6/13.2V Fan control: proportional Bulk Mode (Quick Charging Voltage): 14.4V DC. Output: 55 Amps DC. Input: 105-130 VAC, 60 Hz, 940W. Provides 55 amp DC power, ideal for powering electronics and home appliances AC Input: Voltage: 120 Vac, 60Hz, Current: 11 A, DC Output: 55 Amps, Automatic three-stage battery charging maintains your batterys life with 3 nominal voltage output modes: 13.2 VDC range float" mode, 13.6 VDC range absorption" mode, and a 14.4 VDC range bulk" charge mode. Suitable for both lithium batteries and lead-acid batteries. Function Charges battery or powers 12V equipment Exact replacement for WF-9800 "Switch mode" type: 3-stage charging and fixed single output modes series Temperature controlled quiet internally mounted fan cooling Reverse polarity, overload, and thermal protection Works with both lead batteries and lithium batteries Includes LED indicator light Can also be wired in series or parallel to reach even higher power outputs Feature Quiet operation is assured as the cooling fan runs only when required by the electric load. Converter fans run cooler and more efficiently than other converter fans because the fan is activated by the load being placed on it, not by a heat sensor. Converters protect from damage if polarities are switch. Three-Stage converters replace any single stage converters. Improving your RVs DC output. Upgrade your RV to the latest technology. Great Compatibility Replaces any WF-9800 Series Converter, WF-9855, WF-9855-MBA,WF-9855-AD-MBA,WF-9855AN Power Converter. Easily replace a number of converters including IOTA-DLS-55, Atwood ACO-32, Todd Engineering PC-30. Replace OE part Number: WF-9855. Three-Stage converters replace any single stage converters. Compatible with any dry or wet cell battery.Package List 1x RV Power Converter (As Pics Shown) Return Policy: All of our items come with a 30-day return policy. If you encounter any defects or damages, simply contact us with details and photos, and we'll arrange a refund or replacement. Please note that returns due to non-seller errors are subject to return shipping costs. We reserve the right to refuse any returns for objective reasons. Shipping Policy: All of our items are shipped with tracking numbers. Orders will be shipped within 3 working days upon receipt of payment. Most orders will be shipped within 1 working day. In most cases, shipping takes 8-12 working days.