25A Portable Smart Car Battery Charger 6V, 12V and 24V (GENIUSPRO25)

Unlock high-performance battery care with the NOCO GENIUSPRO25 — a professional-grade 25 amp smart charger built for the toughest jobs. Designed for automotive, marine, RV and deep-cycle applications, this all-in-one unit powers 6 V, 12 V and 24 V battery systems — whether you’re dealing with flooded, gel, AGM, maintenance-free lead-acid or modern lithium-ion batteries.

Key features & benefits:

• Multi-voltage capability: 6 volt at 25 amps, 12 volt at 25 amps, and 24 volt at 12.5 amps to cover a wide range of vehicle and power-system needs. 
• Supports multiple battery chemistries: flooded, gel, AGM, EFB, maintenance-free lead-acid and lithium-ion batteries — making this an ideal service tool for professional technicians or serious DIYers. 
• Dead-battery recovery: Detects batteries as low as 1 volt and includes a “Force Mode” that allows manual activation for charging batteries down to zero volts. 
• Thermal sensor compensation: Monitors ambient temperature and adjusts the charging profile automatically to prevent under-charging in cold weather or over-charging in hot weather — for optimum battery life and durability. 
• Dual-voltage power supply for diagnostic work: Offers a steady 12 V (25 A) / 24 V (12.5 A) power supply mode with no ripple or transient spikes—perfect when you’re flashing ECUs, reprogramming modules, or performing diagnostics on vehicles with delicate electronics. 
• Repair & maintain mode: Built-in battery desulfation and acid-stratification recovery modes bring older or neglected batteries back to life for stronger starts and longer service intervals. 
• Heavy-duty build: Rugged ultra-flexible silicone-cabling rated to –40 ºC with abrasion-resistant braided nylon sheath ensures durability in harsh workshop or field environments. 
• Compact size & professional packaging: With dimensions approx 5.16″ H x 9.21″ W x 2.95″ D (131 × 234 × 75 mm) and weight around 2.7 lbs (1.22 kg), this powerhouse is more compact than comparable units. 

Ideal for these use-cases:

• Professional mechanics, fleet managers, mobile techs and performance shops needing one charger that handles 6 V (classic vehicles/powersports), 12 V cars/trucks and 24 V commercial/industrial systems.
• Marine service, deep-cycle battery applications (boats, RVs) or any situation where treated or neglected batteries benefit from advanced charge-/repair-modes.
• Technicians needing a stable power supply for ECU flashing or diagnostics, where ripple-free output is critical.
• Enthusiasts or professionals who require the fastest, most capable charger/maintainer available — including revival of dead batteries and extended battery life via desulfation.

In the box:
GENIUSPRO25 unit with interchangeable power-cord types (A, C, G and I), Genius HD clamps with integrated eyelets, 10′ extension cord, EVA carrying case, self-tapping screws, user guide and 3-year limited warranty. 

Why this charger stands out:
Unlike standard trickle chargers, the GENIUSPRO25 is engineered for serious service. It replaces multiple single-voltage chargers, incorporates intelligent diagnostics and repair modes, and provides a reliable power supply for professional diagnostic work. With performance improvements over earlier models (such as the G15000), this unit delivers up to 85% more power according to the manufacturer. 

What to keep in mind:

• Ensure the charger is used with properly sized ventilation and avoid covering the unit during operation, as it generates heat when charging heavy-duty batteries.
• Before connecting, always verify the battery voltage and chemistry to select the correct mode; consult the battery manufacturer’s instructions. 
• The IP20 rating indicates basic protection against fingers and small objects, but minimal protection against moisture — keep the unit dry and protected from water. 

If you need a versatile, powerful, professional-grade battery charger and maintainer that can handle 6 V, 12 V and 24 V systems, revive dead batteries and serve as a ripple-free power supply for diagnostics, the NOCO GENIUSPRO25 is engineered to exceed expectations.

Choose one unit now — replace multiple chargers and service tools — and invest in battery health, performance and reliability for years to come.

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.