Engineered for 6-volt and 12-volt systems, the Frontline™ 75 supports a broad range of supported battery types, including traditional lead-acid variants-STD: Wet, EFB, MF, Ca, Deep-cycle; AGM; and Gel types-plus LiFePO4 lithium chemistries. Its advanced multi-stage charging system automatically adjusts voltage and current based on battery condition, helping to deliver faster recovery, strong performance, and longer service life when used as directed.
The Frontline™ 75 offers three selectable charge rates (10 A / 25 A / 75 A) to match different battery sizes and service tasks, plus a powerful 300A Engine Start/Boost function for extra support during tough starts. A variable Power Supply Mode (13.1–14.9 V) provides clean, stable DC power for ECU programming, battery swaps, accessory power, and bench diagnostics. For eligible lead-acid batteries, Repair Mode is designed to help address sulfation and acid stratification, supporting improved performance and potential recovery of neglected batteries. Complementing these modes, Alternator Test Mode gives users a quick way to check basic charging system health by observing system voltage with the engine running-helping flag potential alternator or regulator concerns early.
Built for tough shop conditions, this unit features heavy-duty 14 AWG DC charging leads, a robust 4 GA AC power cable (6 ft 2 in / 1.88 m), and a durable IP20-rated steel housing that resists oil, chemicals, grease, and UV exposure. Integrated protection against reverse polarity, sparks, overheating, short-circuit, open-circuit, and overcharge conditions helps ensure safe operation in professional and DIY environments alike.
Certified to ETL (UL 1236 / CSA C22.2 No. 107.2), FCC, and DOE standards, the Frontline™ 75 delivers wheeled-charger performance in a fraction of the footprint-backed by a 3-Year Limited Warranty.
Use Applications: The Frontline™ 75 is built for users who need serious charging and starting capability across multiple platforms:
- Automotive & Fleet: Cars, trucks, SUVs, service vehicles, and light buses
- Agriculture: Tractors, combines, skid steers, and diesel-powered equipment
- Marine & Power Sports: Boats, tow vehicles, RVs, ATVs, and UTVs
- Industrial & Shop: Generators, small forklifts, and diagnostic bench work using Power Supply Mode
- Maintenance & Storage: Starting and deep-cycle lead-acid batteries, plus supported LiFePO4 batteries, for long-term upkeep
- Ideal for users seeking a 75-amp automotive charger, a 300A engine starter, and an adjustable DC power supply that can stand in for many large wheeled shop models.
- Forney® PRO Frontline™ 75A Smart Battery Charger and Engine Starter
- Quick Start Guide & Safety Information