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NOCO Genius 12v 24v 36v 15 Amp 3-Bank Marine On-Board Battery Charger

Was: $239.95
Sale Price: $189.95
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Product InformationStore Part Number: GEN5X3


Replaces: NOCO Genius GEN Mini 3 (GENM3)

The NOCO Genius GEN5X3 is a 3-bank 12v 24v 36v 15 Amp marine battery charger and maintainer with an output of 12v 5 amps per bank. The charger features an IP68 waterproof rating making it ideal for harsh locations. The GEN5X3 is compatible with 12v lead acid batteries included flooded wet cell, enhanced flooded, maintenance free, AGM and Gel cell batteries. The charger also features a 12v Lithium Mode suitable for Lithium-Ion LiFePo4 Batteries that include a Battery Management System (BMS).

The GEN5X3 features an automatic 12v Repair Mode that equalizes sulfated, idle, or stratified batteries in efforts to repair lost battery performance. This Repair Mode is automatic but can also be manually selected.

The Genius GEN5X3 features a Force Mode meant to recover extremely discharged batteries below 1v. This mode must be manually selected and will force the charger to output for 5 min in an attempt to recover the battery. After 5 minutes the charger will switch back to the standard charging profile.

Each bank outputs 12 volts meant for individual 12v batteries no larger than a group 31 battery (approximately 120 AH). The GEN5X3 can be used for three 12v banks, one 24v battery bank, or one 36v battery bank. Typical installation is for 24-volt series system using two 12v batteries for a trolling motor and an additional bank for a starting 12v battery. Another popular installation is for a 12-volt trolling motor battery and two 12v starting motor batteries.


  • Waterproof - 100% completely sealed with an IP68 rating.
  • Compatible with Flooded, AGM, Maintenance Free, Gel, and Lithium-Ion LifePo4 (w/BMS) Batteries.
  • Low Voltage Detection - Charges batteries as low as 1-volt. Or, use Force Mode to manually charge a battery down to 0-volts for 5 min.
  • 3-Year Warranty


***Not compatible with a single 24v or 36v battery as each lead only outputs 12-volts***

Tech Specs

  • Dimensions (LxWxH): 7.9 x 6.5 x 2.2 in
  • Weight: 6.1 lb
  • Shipping Weight: 9 lb
  • Input AC Voltage: 120-240 VAC
  • Input Current Rating: 220 Watts
  • Input Frequency: 50-60 Hz
  • Nominal Output Voltage: 12v
  • Compatible System Voltage: 12v & 24v & 36v
  • Model: GEN5X3
  • Manufacturer: NOCO
  • Charging Voltage: 14.5, 14.6, 14.8, 16.5 V
  • Safe For: 12 V Lead-Acid & 12 V Lithium-Ion LifePo4 w/BMS
  • Battery Capacity: 20-120 Ah
  • Housing Protection: IP 68
  • AC Cable Length: 6 ft
  • DC Cable Length: 6 ft
  • Warranty: 3 Years
  • Manufacturer Part #: GEN5X3
  • UPC: 046221190458
  • Made In: China

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Spec Sheet


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