This Dual Pro Lil Pro 3 marine battery charger is a newer entry in the Dual Pro line of quality marine battery chargers, in the under 10 amp category. The waterproof Lil Pro chargers are 12 volt independent output, 4 amp per bank, temperature compensating battery chargers. These independent bank battery chargers have a separate positive and negative connector for each bank, and a separate microprocessor chip which controls the charging algorithm of its own bank. The batteries charged may be of differing size, age, state of charge, or type (sealed, flooded). This works well for applications like boats with a starting battery and a trolling motor setup. It also works for series strings of three 12 volt batteries in a 36 volt series. After each battery has its own connection, the charger does not care if they are parallel connected for higher amps, or series connected for higher voltages. This is especially useful in higher voltage situations where one of the 12 volt batteries in the string is feeding some 12 volt loads (like lights, fish finders, etc.), and the batteries end up imbalanced. A straight output 36 volt charger used for this situation would not properly charge the batteries and rectify the imbalance, decreasing battery performance and life.
The Lil Pro 3 three output 4 amp battery charger is appropriate for 12 volt, or 12/24 volt, or 36 volt applications (three 12 volt batteries in series) where an exterior grade battery charger is required or desired. They have flanges for mounting, and will survive water, vibration, and temperature. They are used in marine applications, like boats with a starting battery and a 24 volt trolling motor, or three 12 volt batteries in parallel. When used for a trolling motor application, we use this charger for batteries up to about 50 amp hours. The 80 to 110 amp hour setups should use a 10 amp per bank or larger charger. The Lil Pro 3 can be used as a maintenance charger for larger capacity batteries or systems.
The Dual Pro chargers shut off completely when the battery is fully charged, and the microprocessor monitors the system voltage, initiating another charge sequence if appropriate. Some battery engineers prefer this charging method to decrease water loss.
Built in the USA.
For more information see our Battery Charging Tutorial
Dual Pro 12/24/36 Volt
Lil Pro 3 Charger
|Dim (LxWxH):||9.5 x 8.0 x 5.0||Fully Waterproof|
|Actual Weight:||10.0||Overcharge Protection|
|Ship Weight:||11.0||Reverse Polarity Protection|
|AC Input:||115 VAC||Temperature Compensation|
|Output:||4 Amps/4 Amps/4 Amps||Ignition Protected|
|Banks:||3||Short Circuit Protected|
|Approvals:||USCG 33 CFR183.410||Made In USA|