{"product_id":"epoch-3650a-h-36v-lithium-trolling-motor-battery","title":"Epoch 3650A-H 36V 50Ah Lithium Trolling Motor Battery – Group 31 LiFePO4, Heated + Bluetooth","description":"\u003cp\u003eMost 36V trolling motor setups run on three heavy lead-acid batteries, and hauling that bank in and out of a boat gets old fast. The Epoch 3650A-H is a 36V lithium trolling motor battery that does the same job from one Group 31 case weighing about 35 pounds. Drop it into a tray where one of the old batteries sat, land your leads on the M8 terminals, and take well over a hundred pounds out of the boat.\u003c\/p\u003e\n\u003cp\u003eThe chemistry matters as much as the weight. A lead-acid bank loses voltage as it drains — you feel it at the pedal by mid-afternoon. LiFePO4 holds nearly full voltage through most of its 50Ah capacity, so the motor pulls at dusk the way it did at first light. It recharges faster and takes 4,000-plus cycles with no watering or acid service, ever.\u003c\/p\u003e\n\u003cp\u003eLake Erie fishing doesn't quit when the weather turns, and neither does this battery: built-in heating warms the cells so they can charge safely below freezing, where ordinary lithium batteries shut charging down. The free Epoch app connects over Bluetooth from your phone and shows state of charge, voltage, and current, so you know at the dock whether you have a full day in the tank. Walleye and bass boats running out of Mentor Harbor, Fairport, and Grand River put exactly this kind of demand on a trolling bank.\u003c\/p\u003e\n\u003cp\u003eTwo things it will not do. This is a deep-cycle battery, not a starting battery — it will not crank your outboard, so keep a dedicated starting battery on the big motor. And never wire it in series: one battery runs a 36V system, and you can add up to three more in parallel (200Ah total) for longer days. You'll also need a 36V lithium-compatible charger; the onboard charger that maintained a lead-acid bank almost certainly has the wrong profile. Call us and we'll match one to it.\u003c\/p\u003e\n\u003ch2\u003eFits These 36V Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e36V trolling motor systems, including Minn Kota, Garmin, and Lowrance motors when voltage and current requirements match\u003c\/li\u003e\n\u003cli\u003eDirect replacement for a three-battery 12V lead-acid trolling bank in compatible 36V systems\u003c\/li\u003e\n\u003cli\u003eGroup 31 marine trays — case measures 13.0 × 6.8 × 9.44 inches\u003c\/li\u003e\n\u003cli\u003e36V solar, off-grid, and backup power banks with compatible charging equipment\u003c\/li\u003e\n\u003cli\u003e36V auxiliary and electronics loads with properly sized cable and fusing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf your application isn't listed, call us with the machine and we'll check it. We'd rather check twice than sell you the wrong battery.\u003c\/p\u003e\n\u003ch2\u003e36V 50Ah Group 31 Lithium Battery Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003ctd\u003e3650A-H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVoltage\u003c\/th\u003e\n\u003ctd\u003e36V (38.4V nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCapacity\u003c\/th\u003e\n\u003ctd\u003e50Ah \/ 1.92kWh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eChemistry\u003c\/th\u003e\n\u003ctd\u003eLiFePO4 (lithium iron phosphate), deep cycle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBCI Group Size\u003c\/th\u003e\n\u003ctd\u003e31\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMax Continuous Discharge\u003c\/th\u003e\n\u003ctd\u003e100A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePeak Discharge\u003c\/th\u003e\n\u003ctd\u003e130A for 10 seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCharge Voltage\u003c\/th\u003e\n\u003ctd\u003e42.6–43.2V bulk\/absorption; float disabled or 40.0–40.8V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSeries \/ Parallel\u003c\/th\u003e\n\u003ctd\u003eMax 1 in series \/ up to 4 in parallel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCold Weather\u003c\/th\u003e\n\u003ctd\u003eInternal self-heating for sub-freezing charging\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMonitoring\u003c\/th\u003e\n\u003ctd\u003eBluetooth — free Epoch iOS and Android app\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEnclosure\u003c\/th\u003e\n\u003ctd\u003eIP65 — dust-tight, water-jet resistant (not submersible)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTerminals\u003c\/th\u003e\n\u003ctd\u003eM8 female\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003ctd\u003e13.0 L × 6.8 W × 9.44 H inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e35 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCycle Life\u003c\/th\u003e\n\u003ctd\u003e4,000+ cycles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCertifications\u003c\/th\u003e\n\u003ctd\u003eUL 1642 \/ UL 9540A cells, IEC 62619, CE, RoHS; UN 38.3 for transport\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eWarranty: 8 years.\u003c\/strong\u003e If it fails in normal service inside five years, bring it back to the counter and we make it right.\u003c\/p\u003e\n\u003ch2\u003eDownloadable Resources\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0738\/5625\/4228\/files\/epoch-3650a-h-quick-spec-sheet.png?v=1787763785\" rel=\"noopener\" target=\"_blank\"\u003eEpoch 3650A-H Quick Spec Sheet\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0738\/5625\/4228\/files\/epoch-3650a-h-safety-data-sheet.pdf?v=1787763785\" rel=\"noopener\" target=\"_blank\"\u003eSafety Data Sheet (SDS)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0738\/5625\/4228\/files\/epoch-3650a-h-material-safety-data-sheet.pdf?v=1787763785\" rel=\"noopener\" target=\"_blank\"\u003eMaterial Safety Data Sheet\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eLocal Pickup in Northeast Ohio\u003c\/h2\u003e\n\u003cp\u003eThis battery is available for pickup at our Willoughby shop, serving anglers from Eastlake and Mentor-on-the-Lake up the shoreline to Fairport Harbor and Madison. Call with your boat, motor, and charger model before you drive over — we'll have the fit checked and the battery charged and waiting at the counter.\u003c\/p\u003e","brand":"Epoch Batteries","offers":[{"title":"Default Title","offer_id":53721461719316,"sku":"3650A-H","price":749.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/5625\/4228\/files\/epoch_battery_3650a_h_professional_reflection.png?v=1787763763","url":"https:\/\/bulldogbattery.com\/products\/epoch-3650a-h-36v-lithium-trolling-motor-battery","provider":"Bulldog Battery, Inc.","version":"1.0","type":"link"}