ProMariner ProSport Gen 3 20-Amp Dual Bank Charger
- Brand:
- ProMariner
- Part no:
- 43020
Where to buy
Specifications
- Outputs (banks)
- 2
- Output current
- 20 A
- Ignition protection
- Built-in ignition protection
The ProMariner 43020 is a ProSport Generation 3 onboard marine battery charger, rated at 20 amps with 2 battery banks at 12 volts. Control is all digital through a microprocessor, and the case is rugged aluminum. It reconditions the batteries once a month while stored, and has protection against over-voltage, overload, over-temperature and reverse polarity, plus ignition protection. It arrives pre-wired and carries a 2 year warranty.
Our take
Reconditioning all batteries once a month in storage means this charger is built to stay connected between trips. It is a 20-amp unit with two banks, so count your battery banks against its two outputs.
From our buying guide
NMMA says charging sources must meet the charging profile the battery maker recommends. A charger's presets are its own maker's, not the battery's, so set it from the battery maker's figures.
Check before you buy:
- It can follow your battery's profile, since not every charger can follow a lithium maker's.
- Its output suits your bank. ProMariner recommends about 10 percent of the batteries' total amp-hour capacity, with one charger output for each battery.
- It suits how you'll use it, since ProMariner says its waterproof chargers are for batteries not in use while charging.

