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Genius 12V Onboard Waterproof Marine Battery Charger, 10 Amp, 2-Bank (GEN5X2)
Elevate your marine power system with the NOCO Genius GEN5X2
Built to deliver reliability in the harshest environments, it gives you two independently controlled banks (5 Amps each, 10 Amps total) and supports a wide range of battery chemistries and capacities.
Key Features & Benefits:
Dual-bank design: Two 5 A banks allow simultaneous charging or maintenance of two separate 12 V batteries — ideal for dual-battery boats, starter/house setups or boat/trailer combinations.
Multi-chemistry compatibility: Works with 12 V lead-acid types (flooded, gel, AGM, EFB, maintenance-free, calcium) and lithium-ion (LiFePO₄) batteries with BMS.
Advanced repair & recovery: Automatically detects sulfation or acid stratification and activates a “Repair Mode” to restore lost battery performance and extend life.
Thermal compensation: An integrated sensor monitors ambient temperature and adapts charging to avoid under-charging in cold or over-charging in heat — fully operational from –4 °F up to 104 °F.
Waterproof, rugged design: Rated IP68 — fully sealed and tested through thousands of hours underwater and in salt-spray exposure. Built to withstand vibration, shock and marine conditions.
Space-efficient footprint: Up to 27% smaller in size than its predecessor, while delivering 43% more power — easy to install in tight locations.
Continuous maintenance: Once fully charged, the GEN5X2 shifts into maintenance mode — safe to leave connected indefinitely, giving you peace of mind when your vessel sits idle.
Full spec credentials: Suitable for battery capacities up to 120 Ah, input voltage 120-240 VAC 50/60 Hz, compact dimensions (~4.84" H × 7" W × 2.2" D), weight around 4.17lb.
Why this charger stands out:
Ideal for boat owners, marine enthusiasts or anyone running dual-battery systems, the GEN5X2 delivers a future-proof solution.
You no longer have to compromise on flexibility: its two-bank layout means you don’t have to pick one battery over the other. With multi-chemistry support, you can mix batteries (lead-acid + lithium) and still maintain them properly. The rugged waterproof build means it’s safe to mount in engine compartments, bilges or exposed wet areas without worry.
Installation & Setup Tips:
Mount the unit in a dry, ventilated location with the supplied self-tapping screws (included). The compact size makes this easy even in tight compartments.
Connect each DC cable (72" length) to ring-terminals on each battery bank’s positive and negative. Ensure correct polarity to avoid error indicators.
Select the correct charging mode per bank (12 V, 12 V AGM, 12 V Lithium, Repair Mode) by pressing the MODE button. The charger remembers the last mode used (auto-memory).
For a deeply discharged battery (below 1 V), use Force Mode (hold MODE for ~3 seconds) to initiate charging from 0 V.
Leave the charger connected year-round if desired — its maintenance mode ensures safe upkeep of your batteries without overcharging.
Ideal Applications:
Marine boats with a starter battery + house or trolling bank
Dual-battery systems in RVs, vans or off-grid vehicles
Deep-cycle battery banks used in solar, watercraft, or seasonal vessels
Pre-wired vessels where ruggedness and waterproofing matter. If you demand a high-quality, dual-bank 12 V onboard charger that can handle wet environments, multiple battery chemistries, and deliver advanced recovery and maintenance features
The NOCO Genius GEN5X2 is a premium choice . Its reliable charging, waterproof build, and intelligent diagnostics combine to protect your investment and keep your 12 V battery system ready whenever you hit the water — or the road.
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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 .
