{"catalog_name":"World Products","variant":"c","item":{"handle":"tbb-power-20a-dm-12v-dc-to-12v-dc-battery-to-battery-charger-tbb-dm1220","title":"TBB Power 20A DM 12V DC to 12V DC battery-to-battery charger","category":"DC to DC Battery Chargers","category_name":null,"category_gid":null,"product_type":"DC to DC Battery Chargers","vendor":"Photonic Universe 26","price":"$91.00","currency_code":"USD","availability":"in_stock","inventory_quantity":0,"sku":"TBB-DM1220","barcode":null,"variant_title":"Default Title","selected_options":{"Title":"Default Title"},"description":"{ \"@context\": \"https://schema.org/\", \"@type\": \"Product\", \"name\": \"TBB Power DM1220 12V 20A DC-DC Battery-to-Battery Charger\", \"description\": \"The TBB-DM1220 is a high-efficiency 20A DC-DC charger designed for Euro 6 engines and smart alternators. Features multi-stage charging for AGM, Gel, and Lithium batteries with integrated back-charging support.\", \"brand\": { \"@type\": \"Brand\", \"name\": \"Solarika\" }, \"sku\": \"TBB-DM1220\", \"mpn\": \"DM1220\", \"offers\": { \"@type\": \"Offer\", \"url\": \"https://Solarika.co.uk/products/{{ product.handle }}\", \"priceCurrency\": \"GBP\", \"price\": \"{{ product.price | money_without_currency }}\", \"availability\": \"https://schema.org/InStock\" } } TBB POWER DM1220 DC-DC CHARGER 12V 20A Intelligent Battery-to-Battery Solution The TBB-DM1220 is a professional-grade in-vehicle DC-DC charger engineered for modern auxiliary battery systems. Designed specifically for vehicles with Euro 6 engines and smart alternators, this unit overcomes the challenges of variable voltage outputs to ensure your leisure battery is charged quickly, safely, and completely. Utilising the TBB Premium II multi-stage algorithm, the DM1220 provides precise charging profiles for various battery chemistries, including Lithium (LiFePO4). Its fanless, passive-cooling design ensures silent operation while maintaining a massive 96% efficiency rate. RELIABILITY: Features a robust back-charging function (0-3A) to maintain your starter battery from your auxiliary source, preventing engine startup failures during long periods of stationary use. Key Features ✔ Euro-6 Compatible: Handles variable alternator voltage. ✔ Back-Charging: Keeps starter battery topped up. ✔ Multi-Chemistry: Supports AGM, Gel, Wet, and Lithium. ✔ Silent Operation: Natural cooling without noisy fans. ✔ High Efficiency: Non-isolated 96% efficiency rating. Technical Specs Output Current 20 Amps Input Voltage (Alt) 13.2V - 16V DC Max Efficiency 96% Battery Chemistry Lead-Acid, AGM, GEL, LiFePO4 Back Charging Yes (0 - 3A) IP Rating IP20 Operating Temp -40°C to +70°C Dimensions 181 x 148 x 52 mm Compatibility / Fitment Guide Vehicle Type Application Compatibility Notes Campervans / RVs Auxiliary Battery Charging Essential for Euro 6 VW T6, Ford Transit, etc. Marine Vessels House Bank Charging Suitable for boats with 12V systems. Utility Vehicles On-board Equipment Powers fridges and tools while driving. OEM Cross Reference Manufacturer Part Number TBB Power DM1220 TBB Power NEMO DM1220 Installation Guide For vehicles with smart alternators, the D+ ignition signal or ACC connection is required to enable the charger. Ensure cable gauges are appropriately sized for a 20A load to prevent voltage drop. Installation by a qualified auto-electrician is recommended. Questions & Answers Is this a genuine original part? This is a premium quality genuine TBB Power unit supplied by Solarika, meeting all European safety and performance standards (ECE 10R-06). How do I know if it is compatible? If your vehicle features a smart alternator (standard on most vehicles post-2015/Euro 6), a DC-DC charger like the DM1220 is required to charge your auxiliary battery properly. Does it support LiFePO4 Lithium batteries? Yes, the DM1220 features a dedicated charging profile for Lithium (LiFePO4) batteries with a 14.2V absorption and 14.0V float setting. Note: Please verify your system requirements against the technical specs above before purchasing. 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