ProMariner Gen 3 ProSport 20 Amp 12/24/36 Volt 3 Bank Waterproof Marine Battery Charger 43021

I"ve had this charger for a few years and it's been working well and makes charging the 3 batteries on my boat an easy operation. Never had an on board charger before, and always charged the batteries 1 at a time which was a huge pain. When I plug this charger in it checks all the batteries and if the connections are good begins to charge them. So it's kinda like a little check on the electrical system as well as charging batteries, and you don't waste your time trying to charge if the connections to the batteries or a fuse are bad. Very handy after a day on the water to simply plug in the charger and go to bed knowing all 3 batteries will be full charge in the morning. Installation was pretty easy, the wires were just long enough to reach the one battery on the opposite side of the boat from where I mounted the charger. My boat is an 18' center console. 3 full seasons later this charger looks and works like new

Last year Our nitro bass boat was left outside and the 3 bank water proof charger we had on it was submerged in ice water; we had been looking for a new one but every one was 500 plus and there was no way I was allowing that; I jumped on amazon before Father’s Day and found this three bank charger; we didn’t need to purchase any of the extra accessories bc we already had one on our boat before, much to our surprise it fit perfectly in the original holes from our first bank charger and this one during a heavy rainstorm ended up submerged for a few days bc the plug was left it, once again big shock after draining the boat and allowing it to dry we plugged it right in and it still works! No problems what so ever, love this bank charger! It runs two trolling batteries and the master, we can go out for hours and not worry one bit about battery charge! Love it! And under 200.00!

Please use the following for troubleshooting steps: Tools Required: 1. Large Flathead Screwdriver or coin 2. Diagonal cutters, Metal File or Sandpaper Time Required: Approx. 5 minutes 1. Disconnect AC power from the charger. 2. Confirm all charger cables are connected correctly to batteries. 3. Remove the programming cap from the wire end of the charger’s end cap using a screwdriver or a coin. 4. Reconnect AC Power. At this point, you should have the following LED’s a. Blue AC power LED b. Green Battery type LED (Gel) c. Red Flashing Analyze/Charge LED i. If you only see the Blue LED, please contact us, and we will begin the warranty replacement process. 5. Disconnect AC power. 6. Programming cap alteration: a. Using a metal file or sandpaper, remove approximately half of the material from the unthreaded portion of the programming cap. i. Approximately 1/8th inch of material will be remaining. 7. Ensure there is no debris in the programming cap hole, or on the cap itself, and reinstall the programming cap. 8. Reconnect AC Power. At this point, you should have the following LED’s a. Blue AC power LED b. Red Battery type LED (Flooded/AGM) c. Red Flashing Analyze/Charge LED i. If you reencounter the issue, remove more material from the unthreaded portion of the programming cap until the charger is functioning properly. ii. The charger must reset to register the correct position of the programming cap. d. The charger is now functioning properly and will follow the operation outlined in the manual. Please Note: The standard warranty is two years from the purchase date for the original owner. If you would like to send your charger in for evaluation, please don’t hesitate to call us at 1-800-824-0524.

THIS IS A GREAT PRODUCT AND MUST HAVE IF YOU HAVE A SKIFF WITH HARD TO REACH TROLLING MOTOR BATTERIES. THIS PRODUCT IS PERMANANTLY MOUNTED IN THE BOAT AND CONSTANTLY HOOKED TO MY 36 VOLT BANK OF BATTERIES. THIS IS A SMART CHARGER AND CONDITIONER. IT DETECTS THE TYPE OF BATTERIES THAT YOU HAVE, HOW YOU HAVE THEM WIRED, AND THE CONDITION THAT THEY ARE IN. ONCE THE CHARGE IS COMPLETE, THE CHARGER ENTERS CONDITIONING AND MANT MODE. IT WILL WORK ON 12,24, AND 36 VOLT SYSTEMS.

The prosport 20 works well. This is my second one for my other boat. They are very dependable and seem to treat the batteries well, thus extending their life. I have one that’s about 5 years old and no issues with the charger or batteries and I don’t expect any from this. Deducted one star because they darn extension cables for the charge leads are absurdly priced. Also wish it were a bit smaller, hard to fit this size charger on a smaller boat.

My initial impressions of this charger are very favorable. It installed easily enough, although it is larger than the unit it replaced so finding/making room for it was harder than I expected. Once plugged in, it goes into an evaluation mode where it prioritizes which batteries to charge first based on rate of discharge. It has very clear indicator lights to show you what it is doing, and the status of the batteries. The biggest test with this charger will be how long it lasts, as I did quite a bit of comparison shopping and notice that most of the other brands are considered a 2 year lifespan. The ProMariner had good reviews so I am hoping it will make it more than 2 years. I think it is critical to mount it according to the instructions, with room for ventilation and in an area that should not be exposed to water. I mounted it accordingly, and time will tell. Update: 10/20/15 For the last 2 months I've been having difficulty with my starting battery. It is dropping too low on voltage to start the motor. I tested the voltage and it is dropping to 10.5 volts, with no draw on the battery (main kill switch). It seems to be switching to the charge cycle only when it drops below 10.5 volts. I have contacted ProMariner to initiate a warranty repair/replacement. I hadn't hoped to test the warranty so soon. If only someone made a reliable charger.

Excelente producto, y muy recomendable!! Llegó antes de lo esperado.

Product as described. Installed on my pontoon with engine battery and 2 trolling motor batteries. Love that it charges all 3 at once, and diverts to trolling batteries if engine battery is full. Tested in my garage on my batteries after winter storage. Worked perfectly and went into maintenance mode when batteries were topped off. I have a solar charger on my trolling batteries, so this won’t get hard use from me, but will need it when fishing multiple days in a row. With 20 amps, it will charge overnight. Time will tell on longevity. Needed extension to reach engine battery but was available from Promariner/Amazon.

The 2018 fishing season is over and the boat has been winterized and put away until the spring. I am happy to report that my ProMariner bank charger worked PERFECTLY all season long and it was so nice to just come home and plug the boat in and not fiddle with battery chargers and clamps anymore. I should have added this to my boat the same year that I bought it! Very happy I went this unit, I highly recommend it. Easy to install, clear instructions and it looks awesome.

I rated 1 star because it would not let me submit with no stars!!!!! This is garbage. We bought and installed it in our boat to keep the 3 batteries charged. It stopped working only after1 year. Not worth the money.....

I've personally gone thru 2 of these in the span of 2-3 years. Seems like the first one I go from promariner, it lasted a year, then went faulty. Power light would come on, but no power on the charging end. I contacted promariner, and I ended up getting a free replacement no problem. And simply sent the old one back to then with a return label. But here's the thing, the one I got from them to replace the old one did the same thing. Only thing different was I got more than a year out of it. But wasn't covered by warranty. I use this in my boat. Sits onboard where my batteries are. I usually just run a cord to it and plug it in everytime. In the fall time when my boat goes to storage, I take my maintainer back home with the batteries. Unless somewhere between transportation and plugging it in something went wrong, I can't seem to understand how both went faulty the same way. I've since bought a different brand of maintainer as this one to replace is quite costly. When it worked it was great! Kept all my batteries maintained, no problem. Just quite possibly had a few that were a bad batch.