NOCO GeniusPRO25 6V/12V/24V 25A Battery Trickle Charger Maintainer Desulfator
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The NOCO GeniusPRO25 is a professional 6V, 12V and 24V smart battery charger, maintainer, power supply and desulfator rated at 25A (6V/12V) and 12.5A (24V), for automotive, marine and deep-cycle batteries. It is part of the NOCO GeniusPRO range.
The GeniusPRO range is also available in smaller outputs — see the NOCO Genius5 5A for lighter-duty use.
Key specifications
- Charging current: 25A (6V, 12V), 12.5A (24V) DC
- Battery voltages: 6V, 12V and 24V
- Chemistry: Lead-acid (AGM, CA, EFB, gel, MF, wet) and lithium
- Capacity range: Up to 1,000Ah (6V, 12V), up to 500Ah (24V)
- Power supply mode: 12V at 25A, 24V at 12.5A
- Input: 100V to 240V AC, 50 to 60Hz
- Power consumption: 375W (max)
- IP rating: IP20
- Size and weight: 131 x 234 x 75mm (H x W x D), 1.22kg
Multi-voltage. Multi-chemistry. Multi-battery type.
Charge multiple battery voltages, chemistries and types from a single unit. Supports 6V and 12V lead-acid and lithium-ion batteries across flooded, gel, maintenance-free and AGM chemistries, covering starter, deep-cycle, marine and powersport applications.
Progressive power supply. Uninterrupted power.
The dual-voltage power supply — 12V at 25A and 24V at 12.5A — delivers constant power without ripple, noise or transient spikes during ECU flashing, reprogramming and diagnostic testing.
Engineered for professionals
Features ultra-flexible silicone cabling rated to -40ºC with protective nylon braided shielding for abrasion resistance, and a heavy-duty replaceable ANL fuse for safety and performance.
Charge dead batteries
An improved start-voltage sensor detects and charges batteries as low as 1V. For batteries below 1V, force mode can be activated manually to charge all the way down to 0V.
Redesigned clamps
Needle-nose clamps suit smaller terminal applications. Detachable integrated eyelets allow permanent mounting to a battery. Designed to fit terminals of any shape and size, with improved clamping range, clamping force and higher conductivity.
Explore the full range in NOCO Battery Chargers.
Specification
| Line Voltage | 100V to 240V AC |
|---|---|
| Frequency | 50Hz to 60Hz |
| Operating Temperature | -4° to 122°F(-20° to 60°C) |
| Storage | Temperature -22° to 140°F(-30° to 60°C) |
| Charging Current | 25 Amps (6V, 12V), 12.5 Amps (24V) DC |
| Voltages | 6 Volts 12 Volts 24 Volts |
| Chemistry | Lead-Acid and Lithium Types: AGM CA EFB Gel Lithium MF Wet |
| Capacity Range | (6V, 12V) Up to 1,000 Amp-Hours, (24V) Up to 500 Amp-Hours |
| Maintenance | All Battery Sizes |
| Power Consumption | 375 Watts (Max) |
| Safety Short-Circuit | Yes Open-Circuit: Yes Overheating: Yes Overcharge: Yes |
| Spark-Proof | Yes Reverse Polarity: Yes |
| Product Size Height | 5.16in (131mm) Width: 9.21in (234mm) Depth: 2.95in (75mm) Weight: 2.7lb (1.22kg) |
| DC Fuse Size | 30 Amp ANL Fuse AC Cable Length: 72in (180cm) AC Cable Size: 18 |
More specs
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What's Included
- GENIUSPRO25 Battery Charger w/ Interchangeable Connectors
- (1) Genius HD Clamps w/ Integrated Eyelets
- (1) 10’ Extension Cord
- (1) EVA Case
- (2) Self-Tapping Screws
- Type A, C, G, and I Power Cables
- User Guide & Warranty Information
NOCO
About the NOCO GENIUSPRO25
From our tech experts at CEN
The NOCO GeniusPRO25 is a professional smart charger, maintainer, power supply and desulfator for 6V, 12V and 24V batteries. It delivers 25A at 6V and 12V, or 12.5A at 24V, and charges lead-acid and lithium batteries up to 1,000Ah, or 500Ah at 24V.
Who it suits
Workshops, fleet operators and owners of large leisure or marine battery banks, including 24V commercial vehicles. Its power supply mode holds a steady 12V at 25A or 24V at 12.5A during ECU programming and diagnostics. For the biggest banks, the GeniusPRO50 doubles the output.
Our tech experts advise
It has flexible silicone cables with braided shielding, HD clamps with integrated eyelets and a replaceable ANL fuse. A 10ft extension cord, EVA case and UK Type G power cable are included. It is rated IP20, so keep it dry and indoors. See all NOCO battery chargers.
Explore the full NOCO range at CEN, with fast UK dispatch and expert advice from our Nottingham team. Shop all NOCO
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Frequently Asked Questions
Q: Can the NOCO GENIUSPRO25 charge 24V batteries?
A: Yes. It charges 6V and 12V batteries at up to 25A and 24V batteries at up to 12.5A.
Q: Can the GENIUSPRO25 be used as a power supply for ECU programming?
A: Yes. It has a dual-voltage power supply mode, 12V at 25A and 24V at 12.5A, designed to maintain constant power without ripple, noise or transient spikes during ECU flashing, reprogramming and diagnostic testing.
Q: What size batteries can the GENIUSPRO25 charge?
A: It charges 6V and 12V batteries up to 1,000Ah and 24V batteries up to 500Ah, and can maintain all battery sizes.
Q: What's in the box with the GENIUSPRO25?
A: The GENIUSPRO25 charger with interchangeable connectors, Genius HD clamps with integrated eyelets, a 10ft extension cord, an EVA case, 2 self-tapping screws, Type A, C, G and I power cables, and the user guide and warranty information.
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