{"product_id":"qbp429361","title":"Blue Sea Systems BatteryLink Battery Charger, 2 Bank, 12V, Integrated ACR","description":"\u003ch6\u003eOverview\u003c\/h6\u003e\u003cp\u003eThe Blue Sea Systems BatteryLink Charger is a 12V DC, two-bank marine battery charger range for boats that need charging at the dock and charge sharing while underway. It combines a multistage AC battery charger with an integrated Automatic Charging Relay, so two isolated battery banks can be charged from shore power and the alternator can help charge both the Start and Auxiliary batteries away from the dock.\u003c\/p\u003e\u003cp\u003eThis North America version uses a NEMA 5-15P plug for standard shore power connections and supports AGM, flooded, and TPPL battery types. Both amperage options use 1 negative and 2 positive output connections, a typical 13.5V DC float voltage, battery temperature compensation, start isolation for sensitive electronics, and an LED remote indicator for charge status at the helm.\u003c\/p\u003e\u003cp\u003eThe range is built for real marine electrical layouts where battery banks need to stay isolated during normal use but still receive charge from available sources. It fits well on cruising boats, fishing boats, and small workboats with separate starting and house or auxiliary battery banks.\u003c\/p\u003e\u003ch6\u003eKey features\u003c\/h6\u003e\u003cul\u003e\n\u003cli\u003eCharges two isolated 12V battery banks from AC shore power using a 3-stage charging profile.\u003c\/li\u003e\n\u003cli\u003eShares alternator charging with both Start and Auxiliary batteries through the integrated ACR when away from the dock.\u003c\/li\u003e\n\u003cli\u003eAvailable in 10A and 20A charging configurations to match different battery bank sizes and onboard loads.\u003c\/li\u003e\n\u003cli\u003eBattery temperature compensation adjusts charging behavior as battery temperature changes, helping reduce overcharging and undercharging risk.\u003c\/li\u003e\n\u003cli\u003eStart isolation helps protect sensitive onboard electronics from voltage sags and spikes during engine starting.\u003c\/li\u003e\n\u003cli\u003eNorth American NEMA 5-15P plug and 50\/60 Hz AC input support for dockside charging.\u003c\/li\u003e\n\u003cli\u003eCompatible with AGM, flooded, and TPPL batteries.\u003c\/li\u003e\n\u003cli\u003eIP67 rating, ignition protection, and compliance with ABYC A-31, ISO 8846, SAE J1171, UL 1236, CSA C22.2 No. 107.2-01, and FCC Part 15 Subpart B.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch6\u003eVariants\u003c\/h6\u003e\u003cp\u003eThis BatteryLink Charger is offered in two amperage configurations for North American installations.\u003c\/p\u003e\u003cp\u003eThe main differences are charging output and ACR rating. Both versions are 12V DC two-bank chargers with shore power charging, alternator charge sharing, temperature compensation, start isolation, an LED remote indicator, and a North American plug.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e7605: 10A amperage. This version uses a 10A multistage charger with a 65A continuous ACR, making it a practical fit for smaller two-bank systems with start and auxiliary batteries.\u003c\/li\u003e\n\u003cli\u003e7608: 20A amperage. This version uses a 20A multistage charger with a 170A continuous ACR and adds remote emergency parallel for combining batteries if the start battery is low.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch6\u003eElectrical and system integration\u003c\/h6\u003e\u003cp\u003eThe charger is meant for 12V DC battery systems with separate Start and Auxiliary banks. At the dock, shore power charges the banks through the onboard AC charger. Underway, the ACR shares alternator charge with both banks while still supporting battery isolation when charging voltage is not present.\u003c\/p\u003e\u003cp\u003eThe 10A version uses a universal 90-265V AC input, while the 20A version uses a 100-240V AC input. Both operate at 50\/60 Hz and use a typical float voltage of 13.5V DC. The 20A version also lists a typical absorption voltage of 14.4V DC.\u003c\/p\u003e\u003ch6\u003eInstallation and fit\u003c\/h6\u003e\u003cp\u003eThe unit should be installed as part of a properly protected marine battery charging system, with cable size, terminal torque, battery capacity, and overcurrent protection matched to the selected model. The 10A version uses 1\/4-inch-20 terminal studs with 60 in-lb torque, while the 20A version uses a 1\/4-inch negative terminal stud at 60 in-lb and 3\/8-inch positive terminal studs at 140 in-lb.\u003c\/p\u003e\u003cp\u003eFor battery sizing, the 10A version is listed for 60Ah minimum and 120Ah maximum battery bank sizes. The 20A version is listed for 100Ah minimum per bank and 400Ah maximum total capacity across both banks. These limits make the amperage choice important when replacing an existing charger or planning a new two-bank system.\u003c\/p\u003e\u003ch6\u003eUse cases on board\u003c\/h6\u003e\u003cp\u003eThis charger range suits boats that spend time both at the dock and underway, especially where a start battery and a house or auxiliary battery need managed charging without tying the banks together all the time. It is a strong match for helm-accessible charge status monitoring, weekend cruising, fishing electronics, cabin loads, and small vessel battery systems that benefit from automatic charge sharing.\u003c\/p\u003e\u003ch6\u003eWhat's included\u003c\/h6\u003e\u003cul\u003e\u003cli\u003eSubmersible temperature sensor\u003c\/li\u003e\u003c\/ul\u003e","brand":"Blue Sea Systems","offers":[{"title":"10A","offer_id":52023100342453,"sku":"QBP429361-V6","price":203.99,"currency_code":"USD","in_stock":false},{"title":"20A","offer_id":52023100375221,"sku":"QBP429361-V1","price":503.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0977\/8171\/1029\/files\/1333220_qbp429361.jpg?v=1780191717","url":"https:\/\/www.qualityboatparts.com\/products\/qbp429361","provider":"Quality Boat Parts","version":"1.0","type":"link"}