{"product_id":"3805211","title":"Douglas Hydraulic Manufacturing RSC-L1STP 12V Switch Mode Battery Charger for Hydraulic Lift Trailers (3805211)","description":"\u003cstyle\u003e\n  .rp-mag-lock{\n    --rp-black:#111111;\n    --rp-charcoal:#1d1d1f;\n    --rp-gray:#6b7280;\n    --rp-light:#f5f5f5;\n    --rp-line:#d8d8d8;\n    --rp-maroon:#6e0f11;\n    --rp-gold:#d7a126;\n    --rp-cream:#fff7e3;\n    --rp-shadow:0 16px 36px rgba(0,0,0,.08);\n    --rp-radius:20px;\n    font-family:\"Helvetica Neue\",Helvetica,Arial,sans-serif;\n    color:var(--rp-black);\n    line-height:1.6;\n  }\n\n  .rp-mag-lock *{\n    box-sizing:border-box;\n  }\n\n  .rp-mag-lock .rp-shell{\n    max-width:1080px;\n    margin:0 auto;\n    padding:28px 18px 40px 18px;\n    background:\n      linear-gradient(180deg,#fafafa 0%,#ffffff 22%,#ffffff 100%);\n  }\n\n  .rp-mag-lock .rp-hero{\n    position:relative;\n    overflow:hidden;\n    border:1px solid #ececec;\n    border-radius:28px;\n    padding:30px 24px 26px 24px;\n 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18px 22px 18px;\n    }\n\n    .rp-mag-lock .rp-card,\n    .rp-mag-lock .rp-feature{\n      padding:16px;\n    }\n\n    .rp-mag-lock .rp-title{\n      font-size:24px;\n    }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"rp-mag-lock\"\u003e\n  \u003cdiv class=\"rp-shell\"\u003e\n\n    \u003c!-- HERO --\u003e\n    \u003cdiv class=\"rp-hero\"\u003e\n      \u003cdiv class=\"rp-logo\"\u003e\n        \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2659\/6148\/files\/LOGO-FINALx200.png?v=1763669885\" alt=\"R \u0026amp; P Carriages\"\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"rp-kicker\"\u003eHYDRAULIC TRAILER BATTERY CHARGING \/ 12V POWER SYSTEMS\u003c\/div\u003e\n\n      \u003ch1 class=\"rp-title\"\u003eDouglas Hydraulic Manufacturing RSC-L1STP 12V Switch Mode Charger for Hydraulic Lift Trailers 7.5-Amp\u003c\/h1\u003e\n\n      \u003cp class=\"rp-subhead\"\u003e12V switch mode charger\/tester for hydraulic lift trailers, hydraulic dump trailers, and trailer-mounted hydraulic systems using an onboard 12V battery. Includes charging, battery life test button, 2-wire leads, cover with lid, and mounting hardware.\u003c\/p\u003e\n\n      \u003cdiv class=\"rp-partline\"\u003e\n        \u003cspan class=\"rp-badge\"\u003ePart Number: 3805211\u003c\/span\u003e\n        \u003cspan class=\"rp-badge alt\"\u003eModel: RSC-L1STP\u003c\/span\u003e\n        \u003cspan class=\"rp-badge alt\"\u003e7.5-Amp Charger\u003c\/span\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- OVERVIEW + SERVICE INSIGHT --\u003e\n    \u003cdiv class=\"rp-section rp-grid-2\"\u003e\n      \u003cdiv class=\"rp-card\"\u003e\n        \u003cdiv class=\"rp-rule-title\"\u003e\n          \u003ch2\u003eOverview\u003c\/h2\u003e\n        \u003c\/div\u003e\n        \u003cp class=\"rp-lead\"\u003eThis Douglas Hydraulic Manufacturing 12V switch mode charger\/tester is designed for hydraulic lift trailers, hydraulic dump trailers, and trailer-mounted hydraulic battery systems. It helps charge and maintain the 12V battery used to power hydraulic trailer operation and includes a battery life test button for quick condition checks.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"rp-card rp-service\"\u003e\n        \u003ch2\u003eR\u0026amp;P Service Insight\u003c\/h2\u003e\n        \u003cp\u003eHydraulic trailer batteries work hard, especially on dump and lift systems where repeated pump cycles can pull charge down quickly. A properly matched onboard charger helps keep the battery ready between uses and can reduce low-voltage hydraulic performance problems.\u003c\/p\u003e\n        \u003cul\u003e\n          \u003cli\u003e\n\u003cstrong\u003eBattery Maintenance:\u003c\/strong\u003e Helps maintain the 12V battery used for trailer-mounted hydraulic operation.\u003c\/li\u003e\n          \u003cli\u003e\n\u003cstrong\u003eAutomatic Shutoff:\u003c\/strong\u003e Charger only charges until the battery is full, helping reduce unnecessary charging once the battery reaches full charge.\u003c\/li\u003e\n          \u003cli\u003e\n\u003cstrong\u003eQuick Testing:\u003c\/strong\u003e Built-in test button allows a quick battery life check at the charger\/tester unit.\u003c\/li\u003e\n        \u003c\/ul\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- KNOWLEDGE HUB --\u003e\n    \u003cdiv class=\"rp-section\"\u003e\n      \u003cdiv class=\"rp-card rp-knowledge\"\u003e\n        \u003ch2\u003eR\u0026amp;P Knowledge Hub\u003c\/h2\u003e\n        \u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Intended for 12V battery systems used on hydraulic lift trailers, hydraulic dump trailers, and trailer-mounted hydraulic systems where electrical requirements and wiring configuration match.\u003c\/p\u003e\n        \u003cp\u003e\u003cstrong\u003eVehicle \/ System Fit:\u003c\/strong\u003e Trailer-mounted 12V hydraulic power systems using a battery-powered hydraulic pump setup.\u003c\/p\u003e\n        \u003cp\u003e\u003cstrong\u003eInstallation Notes:\u003c\/strong\u003e Verify part number, model number, voltage, charger rating, wiring style, lead length, battery condition, terminal connection points, and mounting location before installation.\u003c\/p\u003e\n        \u003cp\u003e\u003cstrong\u003ePerformance Insight:\u003c\/strong\u003e A dedicated charger\/tester is useful on hydraulic trailer systems because the battery may sit between uses and then be required to power high-demand lift or dump operation.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- BRAND \u0026 FITMENT NOTE --\u003e\n    \u003cdiv class=\"rp-section\"\u003e\n      \u003cdiv class=\"rp-card rp-knowledge\"\u003e\n        \u003ch2\u003eBrand \u0026amp; Fitment Note\u003c\/h2\u003e\n        \u003cp\u003e\u003cstrong\u003eSelling Brand:\u003c\/strong\u003e Douglas Hydraulic Manufacturing\u003c\/p\u003e\n        \u003cp\u003e\u003cstrong\u003eApplication Reference:\u003c\/strong\u003e Hydraulic lift trailer, hydraulic dump trailer, and trailer-mounted hydraulic system references describe the intended application style only.\u003c\/p\u003e\n        \u003cp\u003e\u003cstrong\u003eWhat This Means:\u003c\/strong\u003e This listing is for a Douglas Hydraulic Manufacturing 12V switch mode charger\/tester, not a guaranteed replacement for every hydraulic trailer charger unless the part number, model, voltage, wiring, dimensions, and system requirements match.\u003c\/p\u003e\n        \u003cp\u003e\u003cstrong\u003eBefore Ordering:\u003c\/strong\u003e Confirm part number 3805211, model RSC-L1STP, 12V system compatibility, 7.5-Amp charger requirement, 2-wire setup, lead length, cover size, and your trailer’s charging requirements before installation.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- REPAIR INSIGHT --\u003e\n    \u003cdiv class=\"rp-section\"\u003e\n      \u003cdiv class=\"rp-card rp-service\"\u003e\n        \u003ch2\u003eR\u0026amp;P Repair Insight\u003c\/h2\u003e\n        \u003cp\u003eLow battery voltage is a common cause of weak, slow, or inconsistent hydraulic trailer operation. Before replacing a charger, inspect the battery, terminals, wiring, ground connections, and charging source so the new charger is not being asked to compensate for a separate electrical problem.\u003c\/p\u003e\n        \u003cul\u003e\n          \u003cli\u003e\n\u003cstrong\u003eSystem Check:\u003c\/strong\u003e Confirm the trailer uses a 12V battery-powered hydraulic system for dump or lift operation.\u003c\/li\u003e\n          \u003cli\u003e\n\u003cstrong\u003eWiring Check:\u003c\/strong\u003e Confirm the 2-wire setup and 23\" lead length are suitable for your battery and mounting location.\u003c\/li\u003e\n          \u003cli\u003e\n\u003cstrong\u003eMounting Check:\u003c\/strong\u003e Confirm the tester unit and cover dimensions fit the available mounting space before installation.\u003c\/li\u003e\n        \u003c\/ul\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- FEATURES --\u003e\n    \u003cdiv class=\"rp-section\"\u003e\n      \u003cdiv class=\"rp-rule-title\"\u003e\n        \u003ch2\u003eFeatures\u003c\/h2\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"rp-feature-grid\"\u003e\n        \u003cdiv class=\"rp-feature\"\u003e\n          \u003ch3\u003e12V Hydraulic Trailer Charging\u003c\/h3\u003e\n          \u003cp\u003eDesigned for 12V battery systems used on hydraulic lift trailers, hydraulic dump trailers, and trailer-mounted hydraulic applications.\u003c\/p\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rp-feature\"\u003e\n          \u003ch3\u003e7.5-Amp Switch Mode Charger\u003c\/h3\u003e\n          \u003cp\u003eSwitch mode charger design for hydraulic trailer battery systems requiring a 12V charger\/tester setup.\u003c\/p\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rp-feature\"\u003e\n          \u003ch3\u003eBattery Life Test Button\u003c\/h3\u003e\n          \u003cp\u003eIntegrated test button allows a quick battery life check directly at the charger\/tester unit.\u003c\/p\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rp-feature\"\u003e\n          \u003ch3\u003e2-Wire Battery Lead Setup\u003c\/h3\u003e\n          \u003cp\u003eIncludes 2 x 14GA wires with 23\" leads for connection into the trailer battery charging system.\u003c\/p\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- SPECIFICATIONS + FITMENT --\u003e\n    \u003cdiv class=\"rp-section rp-grid-2\"\u003e\n      \u003cdiv\u003e\n        \u003cdiv class=\"rp-rule-title\"\u003e\n          \u003ch2\u003eSpecifications\u003c\/h2\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rp-table-wrap\"\u003e\n          \u003ctable\u003e\n            \u003ctbody\u003e\n              \u003ctr\u003e\n                \u003cth\u003eSpecification\u003c\/th\u003e\n                \u003cth\u003eDetail\u003c\/th\u003e\n              \u003c\/tr\u003e\n              \u003ctr\u003e\n                \u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n                \u003ctd\u003e3805211\u003c\/td\u003e\n              \u003c\/tr\u003e\n              \u003ctr\u003e\n                \u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n                \u003ctd\u003eRSC-L1STP\u003c\/td\u003e\n              \u003c\/tr\u003e\n              \u003ctr\u003e\n                \u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n                \u003ctd\u003eDouglas Hydraulic Manufacturing\u003c\/td\u003e\n              \u003c\/tr\u003e\n              \u003ctr\u003e\n                \u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n                \u003ctd\u003e12V switch mode charger\/tester\u003c\/td\u003e\n              \u003c\/tr\u003e\n              \u003ctr\u003e\n                \u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n                \u003ctd\u003eHydraulic lift trailers, hydraulic dump trailers, and trailer-mounted hydraulic systems using a 12V battery\u003c\/td\u003e\n              \u003c\/tr\u003e\n              \u003ctr\u003e\n                \u003ctd\u003e\u003cstrong\u003eInput\u003c\/strong\u003e\u003c\/td\u003e\n                \u003ctd\u003eAC 120V \/ 60Hz\u003c\/td\u003e\n              \u003c\/tr\u003e\n              \u003ctr\u003e\n                \u003ctd\u003e\u003cstrong\u003eOutput\u003c\/strong\u003e\u003c\/td\u003e\n                \u003ctd\u003eDC 12V\u003c\/td\u003e\n              \u003c\/tr\u003e\n              \u003ctr\u003e\n                \u003ctd\u003e\u003cstrong\u003eCharging Current\u003c\/strong\u003e\u003c\/td\u003e\n                \u003ctd\u003e7.5-Amp\u003c\/td\u003e\n              \u003c\/tr\u003e\n              \u003ctr\u003e\n                \u003ctd\u003e\u003cstrong\u003eCharging Behavior\u003c\/strong\u003e\u003c\/td\u003e\n                \u003ctd\u003eCharger only charges until the battery is full\u003c\/td\u003e\n              \u003c\/tr\u003e\n              \u003ctr\u003e\n                \u003ctd\u003e\u003cstrong\u003eTester Function\u003c\/strong\u003e\u003c\/td\u003e\n                \u003ctd\u003eTest button for battery life\u003c\/td\u003e\n              \u003c\/tr\u003e\n              \u003ctr\u003e\n                \u003ctd\u003e\u003cstrong\u003eWiring\u003c\/strong\u003e\u003c\/td\u003e\n                \u003ctd\u003e2-wire setup\u003c\/td\u003e\n              \u003c\/tr\u003e\n              \u003ctr\u003e\n                \u003ctd\u003e\u003cstrong\u003eWire Gauge \/ Lead Length\u003c\/strong\u003e\u003c\/td\u003e\n                \u003ctd\u003e2 x 14GA wires with 23\" leads\u003c\/td\u003e\n              \u003c\/tr\u003e\n              \u003ctr\u003e\n                \u003ctd\u003e\u003cstrong\u003eTester Unit Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n                \u003ctd\u003e3-1\/2\" W x 5\" H x 2-1\/2\" D\u003c\/td\u003e\n              \u003c\/tr\u003e\n              \u003ctr\u003e\n                \u003ctd\u003e\u003cstrong\u003eCover Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n                \u003ctd\u003e3\" W x 3\" H x 1\" D\u003c\/td\u003e\n              \u003c\/tr\u003e\n              \u003ctr\u003e\n                \u003ctd\u003e\u003cstrong\u003eMounting Hardware\u003c\/strong\u003e\u003c\/td\u003e\n                \u003ctd\u003eIncluded\u003c\/td\u003e\n              \u003c\/tr\u003e\n            \u003c\/tbody\u003e\n          \u003c\/table\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv\u003e\n        \u003cdiv class=\"rp-rule-title\"\u003e\n          \u003ch2\u003eFitment \/ Application\u003c\/h2\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rp-table-wrap\"\u003e\n          \u003ctable\u003e\n            \u003ctbody\u003e\n              \u003ctr\u003e\n                \u003cth\u003eCategory\u003c\/th\u003e\n                \u003cth\u003eDetails\u003c\/th\u003e\n              \u003c\/tr\u003e\n              \u003ctr\u003e\n                \u003ctd\u003e\u003cstrong\u003eVehicle \/ System\u003c\/strong\u003e\u003c\/td\u003e\n                \u003ctd\u003eTrailer-mounted hydraulic system with 12V battery power\u003c\/td\u003e\n              \u003c\/tr\u003e\n              \u003ctr\u003e\n                \u003ctd\u003e\u003cstrong\u003ePrimary Fit\u003c\/strong\u003e\u003c\/td\u003e\n                \u003ctd\u003eHydraulic lift trailers requiring a 12V switch mode charger\/tester\u003c\/td\u003e\n              \u003c\/tr\u003e\n              \u003ctr\u003e\n                \u003ctd\u003e\u003cstrong\u003eSecondary Fit\u003c\/strong\u003e\u003c\/td\u003e\n                \u003ctd\u003eHydraulic dump trailers and other trailer-mounted hydraulic lift systems requiring a 12V battery charger\u003c\/td\u003e\n              \u003c\/tr\u003e\n              \u003ctr\u003e\n                \u003ctd\u003e\u003cstrong\u003eNotes\u003c\/strong\u003e\u003c\/td\u003e\n                \u003ctd\u003eVerify part number 3805211, model RSC-L1STP, 12V battery system, 7.5-Amp charger requirement, 2-wire setup, lead length, unit dimensions, and cover dimensions before ordering or installing.\u003c\/td\u003e\n              \u003c\/tr\u003e\n            \u003c\/tbody\u003e\n          \u003c\/table\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- INCLUDED COMPONENTS --\u003e\n    \u003cdiv class=\"rp-section\"\u003e\n      \u003cdiv class=\"rp-rule-title\"\u003e\n        \u003ch2\u003eIncluded Components\u003c\/h2\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"rp-table-wrap\"\u003e\n        \u003ctable\u003e\n          \u003ctbody\u003e\n            \u003ctr\u003e\n              \u003cth\u003eQuantity\u003c\/th\u003e\n              \u003cth\u003eItem\u003c\/th\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003ctd\u003e1\u003c\/td\u003e\n              \u003ctd\u003eCharger\/tester unit\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003ctd\u003e1\u003c\/td\u003e\n              \u003ctd\u003eCover with lid\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003ctd\u003eIncluded\u003c\/td\u003e\n              \u003ctd\u003eMounting hardware\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003ctd\u003eAttached\u003c\/td\u003e\n              \u003ctd\u003e2 x 14GA wires with 23\" leads\u003c\/td\u003e\n            \u003c\/tr\u003e\n          \u003c\/tbody\u003e\n        \u003c\/table\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- IMPORTANT NOTE --\u003e\n    \u003cdiv class=\"rp-note\"\u003eVerify the part number, model number, 12V system compatibility, 7.5-Amp charger requirement, wiring style, lead length, tester unit dimensions, cover dimensions, mounting location, and included components before installation. Application references describe hydraulic lift trailer and hydraulic dump trailer use only where the electrical requirements and configuration match.\u003c\/div\u003e\n\n    \u003c!-- CTA --\u003e\n    \u003cdiv class=\"rp-cta-wrap\"\u003e\n      \u003ca class=\"rp-btn\" href=\"https:\/\/needatrailerpart.com\/search?q=hydraulic%20trailer%20battery%20charger\"\u003eShop Related Hydraulic Trailer Parts\u003c\/a\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- SEO BLOCK --\u003e\n    \u003cdiv class=\"rp-seo\"\u003eDouglas Hydraulic Manufacturing RSC-L1STP battery charger, Douglas 3805211 charger, 12V switch mode charger for hydraulic lift trailers 7.5 amp, hydraulic trailer battery charger, hydraulic dump trailer charger tester, trailer mounted hydraulic battery charger, 12V charger tester for hydraulic dump trailers, 12V charger tester for hydraulic lifts, 2 wire hydraulic trailer charger, charger tester with battery life test button, 3805211 12V switch mode charger\u003c\/div\u003e\n\n    \u003c!-- FOOTER --\u003e\n    \u003cdiv class=\"rp-footer\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2659\/6148\/files\/Baseball_AdvertisingRP-sign_1.jpg?v=1771533480\" alt=\"R \u0026amp; P Carriages\"\u003e\n    \u003c\/div\u003e\n\n    \u003chr style=\"border:0; border-top:1px solid #eee; margin:24px 0 0 0;\"\u003e\n\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Need a Trailer Part","offers":[{"title":"Default Title","offer_id":51916541067550,"sku":"3805211","price":79.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2659\/6148\/files\/3805211-05.png?v=1780338246","url":"https:\/\/needatrailerpart.com\/products\/3805211","provider":"Need a Trailer Part","version":"1.0","type":"link"}