NOCO GeniusPro50 50-Amp Fully Automatic Professional Smart Battery Charger

NOCO GeniusPro50 is a large, heavy, and expensive, fully automatic, smart, and rather versatile battery charger, intended for charging a long list of batteries at 6V, 12V, and 24V with the currents of 25 and 50 Amps, voltage-dependent. Also, it features 10 Amps charging mode.

Additionally, NOCO GeniusPro50 comes with many other features and can be used as a power supply, battery desulfator, for recovering deeply discharged batteries, etc.

With the introduction of larger and larger lead-acid and especially lithium batteries, NOCO GeniusPro50 has become a more common battery charger, often used for charging large trolling motors, off-the-grid battery banks, RV batteries, etc.

Published: May 17, 2022.

NOCO GeniusPro50 Battery Charger Features and Specifications

For people used to standard car battery chargers, the NOCO GeniusPro50 battery charger can be relatively large, but thanks to the advances in technology, especially electronics, NOCO GeniusPro50 is a relatively compact unit considering all the features it comes with.

Its physical dimensions are 12.4 x 6.9 x 3.8 inches (~316 x 176 x 97.5 mm) and it weighs ~12.1 pounds (~5.5 kg) with all the accessories and carrying case (5.0 pounds the charger itself).

NOCO GeniusPro50 is a fully automatic battery charger with numerous charging modes, including 6V batteries @50A rate, 12V batteries @50A rate, and 24V batteries @25A rate. These charging modes include:

- 12V Charging Mode: with its maximum charging voltage of 14.5V and maximum charging current of 50A, 12V Charging Mode is intended for charging Wet/Flooded Cell, Gel-Cell, Enhanced Flooded, Maintenance-Free, and Calcium lead-acid batteries up to 2000Ah of nominal capacity.

- 12V AGM Charting Mode features a maximum charging voltage of 14.8V and maximum charging current of 50A and is intended for charging 12V AGM batteries up to 2000Ah.

- 12V Lithium Charging Mode is intended for charging deep-cycle Lithium Iron Phosphate (LiFePO₄) batteries with the built-in Battery Management System. 12V Lithium Charging Mode features a maximum charging voltage of 14.6V and a maximum charging current of 50A and is intended for batteries up to 2000Ah.

- 6V Charging Mode features a maximum charging voltage of 7.25V and a maximum charging current of 50A, 6V Charging Mode is intended for charging Wet/Flooded Cell, Gel-Cell, Enhanced Flooded, Maintenance-Free, and Calcium lead-acid batteries up to 2000Ah of nominal capacity.

- 6V AGM Charting Mode features a maximum charging voltage of 7.4V and maximum charging current of 50A and is intended for charging 6V AGM batteries up to 2000Ah.

- 6V Lithium Charging Mode is intended for charging deep-cycle Lithium Iron Phosphate (LiFePO₄) batteries with the built-in Battery Management System. 6V Lithium Charging Mode features a maximum charging voltage of 7.3V and a maximum charging current of 50A and is intended for batteries up to 2000Ah.

- 24V Charging Mode features a maximum charging voltage of 29V and maximum charging current of 25A, 24V Charging Mode is intended for charging Wet/Flooded Cell, Gel-Cell, Enhanced Flooded, Maintenance-Free, and Calcium lead-acid batteries up to 1000Ah of nominal capacity.

- 24V AGM Charting Mode features a maximum charging voltage of 29.6V and maximum charging current of 25A and is intended for charging 12V AGM batteries up to 1000Ah.

- 24V Lithium Charging Mode is intended for charging deep-cycle Lithium Iron Phosphate (LiFePO4) batteries with the built-in Battery Management System. 12V Lithium Charging Mode features a maximum charging voltage of 29.2V and a maximum charging current of 25A and is intended for batteries up to 1000Ah.

- 6V Repair Mode is used for repairing and restoring, old, idle, damaged, stratified, and/or sulfated batteries using voltage up to 8V and current up to 3A and can be used on lead-acid batteries up to 2000Ah.

- 12V Repair Mode is used for repairing and restoring, old, idle, damaged, stratified, and/or sulfated lead-acid batteries using voltage up to 16V and current up to 3A and can be used on batteries with a capacity of up to 2000Ah.

- 24V Repair Mode is used for repairing and restoring, old, idle, damaged, stratified, and/or sulfated lead-acid batteries using voltage up to 32V and current up to 1.5A and can be used on batteries with a capacity of up to 1000Ah.

- Force Mode is used for recovering deeply discharged batteries, even below 1V.

Note: be very careful with the Force Mode. Although (almost) fully automatic with many safety features, before using NOCO GeniusPro50 and especially its Force Mode, read the documentation that comes with the unit in order to get accustomed to your new battery charger.

- 12V Supply Mode turns the unit into a power supply with a nominal voltage of 13.6V and a maximum current of up to 50 Amps.

- 24V Supply Mode turns the unit into a power supply with a nominal voltage of 27.2V and a maximum current of up to 25 Amps.

- 10A Charging Mode limits the output current to 10 Amps, allowing the unit to recharge smaller batteries as well. 10A Charging Mode can be used in combination with 12V, 12V AGM, 12V Lithium, 6V, 6V AGM, 6V Lithium, 24V, 24V AGM, and 24V Lithium Charging Modes.

NOCO GeniusPro50 is designed to work in ambient temperatures between -4°F and 122°F (-20°C and 50°C). Also, it features a temperature probe to avoid overcharging the batteries during summer and undercharging the batteries during winter.

The unit also comes with various signal LEDs that allow the users to easily check the unit's condition and the state of charge of the charged battery.

NOCO GeniusPro50 Charging Times

Actual charging times depend on the battery size, battery condition, temperature, Depth of Discharge, and similar.

The following chart lists approximate charging times for the batteries discharged down to 50% DoD and should be used only as a general guideline:

Note: Personally, charging a 12V 2000Ah battery and 24V 1000Ah battery for 30h lasts too long (again, this is for 50% DoD!). If You have the need for charging such batteries, go for at least 200-250 Amps battery chargers. Also, charging relatively small batteries 50-100Ah with 50A current should be done only if allowed by the manufacturers of the batteries - if unsure, use 10A Charging Mode.

What's In The Box?

When the NOCO GeniusPro50 charger arrives, the box contains:

- NOCO GeniuPro50 6V, 12V, and 24V Battery Charger

- Pro HD X-Connect Battery Clamps With Integrated 3/8-Inch (M10) Eyelets

- Pro HD X-Connect 10-Foot (3m) Extension Cable

- four types of AC cords (US, EU, UK, AU)

- Portable EVA Storage Case

- Two (2) Mounting Screws

- User Guide

Note: NOCO GeniusPro50 battery charger accepts 120-240V 50-60 Hz AC power.

NOCO GeniusPro50 battery charger comes with a limited 3-year warranty.

Long Story Short: People looking for a versatile battery charger for various larger 6V, 12V, and 24V batteries and battery packs should consider the NOCO GeniusPro50 battery charger - it is an advanced fully automatic battery charger that can charge the batteries with 25A (24V) and 50A (6V and 12V), that can function as a very stable power supply, that can be used to repair deeply discharged batteries, etc.

This battery charger is not cheap, but neither are the batteries that it is intended to charge - it is worth every (euro)cent, IMHO.

For more reviews and recommendations, feel free to check the NOCO GeniusPro50 Battery Charger Amazon link (link opens in the new window).