{"product_id":"wf-9855-55-amp-rv-power-converter-for-lithium-battery-quiet-3-stage","title":"WF-9855 55 Amp RV Power Converter for Lithium Battery - Quiet 3-Stage","description":"\u003cp\u003eIn this review of the WF-9855 55 Amp RV power converter, the bottom line is simple: this unit is for RV owners who run a lithium battery bank and need a reliable, direct replacement for WF-9800 series converters. The reviewer found the standout reason to buy is its tailored \u003cstrong\u003edesign for lithium battery\u003c\/strong\u003e charging that delivers a 14.6VDC three-stage charge and matches expected lithium charge profiles, making it a straightforward swap-in for WF-9855, WF-9855-AD and related models.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e55 Amp output:\u003c\/strong\u003e Delivers up to 55 A of charging current, suitable for medium-sized RV lithium battery banks and consistent charging under load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree-stage charging:\u003c\/strong\u003e The converter uses a three-stage charge algorithm to bring lithium batteries to full capacity efficiently while avoiding overcharge.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSilent fan:\u003c\/strong\u003e An upgraded pure copper silent fan reduces audible noise by about 30% while providing improved cooling for sustained operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtective functions:\u003c\/strong\u003e Built-in overcharge, overvoltage, overcurrent, high temperature and short circuit protections increase safety and protect the battery and RV wiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5-year warranty:\u003c\/strong\u003e Backed by a five-year manufacturer warranty and responsive support, which provides extra confidence for long-term installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect compatibility:\u003c\/strong\u003e Designed as a replacement for WF-9855, WF-9855-AD, WF-9855-LIS and other WF-9800 series units, simplifying upgrades and repairs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe WF-9855 is best for RV owners and technicians who need a reliable, plug-and-play replacement for WF-9800 series power converters or want a converter that is specifically tuned for \u003cstrong\u003elithium battery\u003c\/strong\u003e charging. It fits owners running moderate lithium capacity systems where a 55 A charger provides a good balance between charging speed and heat management.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include owners with very large battery banks who need higher than 55 A charging, or users who prioritize the absolute quietest electronics available, since some customers still report fan noise even with the reduced-noise design.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProvides a correct 14.6V three-stage charge that matches lithium battery requirements and completes charging reliably.\u003c\/li\u003e\n\u003cli\u003eMultiple built-in protections reduce the risk of damage to battery or electrical system during faults.\u003c\/li\u003e\n\u003cli\u003eQuality construction and a 5-year warranty give confidence in long-term use and value for money.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAlthough the fan is quieter than older units, some users still note audible noise under certain conditions.\u003c\/li\u003e\n\u003cli\u003eLimited to 55 A output, so it may be undersized for very large lithium banks that need faster recharge rates.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower\u003c\/td\u003e\n\u003ctd\u003e950 Watts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current\u003c\/td\u003e\n\u003ctd\u003e55 Amps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage\u003c\/td\u003e\n\u003ctd\u003e14.6 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage \/ Frequency\u003c\/td\u003e\n\u003ctd\u003e105-130 VAC, 60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharging Method\u003c\/td\u003e\n\u003ctd\u003eThree-Stage Charging\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtections\u003c\/td\u003e\n\u003ctd\u003eOvercharge, Overvoltage, Overcurrent, High temp, Short circuit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e5-year manufacturer warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe WF-9855 is a practical, value-oriented converter for RV owners who need a compatible, purpose-built \u003cstrong\u003elithium battery\u003c\/strong\u003e charger to replace WF-9800 series units. Its three-stage charging, safety protections and long warranty make it a sensible buy for typical RV systems, though buyers with very large battery banks should seek higher current options.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this a direct replacement for older WF-9800 series converters?\u003c\/strong\u003e\u003cbr\u003eYes, it is designed to be compatible with WF-9855, WF-9855-AD, WF-9855-LIS and other WF-9800 series converters for straightforward replacement.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat voltage does it charge to?\u003c\/strong\u003e\u003cbr\u003eThe converter charges to 14.6 VDC using a three-stage charging profile suitable for lithium batteries.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow noisy is the unit in operation?\u003c\/strong\u003e\u003cbr\u003eThe unit uses a pure copper silent fan that reduces noise by about 30% compared with older designs, but some users may still hear fan noise under higher load or in quiet surroundings.\u003c\/p\u003e","brand":"suplife","offers":[{"title":"Default Title","offer_id":48237163905243,"sku":"B0DPKTFC5F","price":65.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71aMDW0PruL._AC_SL1500.jpg?v=1770750515","url":"https:\/\/gearmusthave.com\/products\/wf-9855-55-amp-rv-power-converter-for-lithium-battery-quiet-3-stage","provider":"GearMustHave","version":"1.0","type":"link"}