Guest 2711A Guest On-Board Battery Charger 10A / 12V, 2 Bank, 120V Input

Got this 5/5 Guest Charger to permanently install on my Malibu boat with dual starting lead acid batteries. I am loyal to Noco Chargers for all my OHV toys but after reading a ton of reviews saying their Noco marine charger destroyed their marine batteries by over charging and making the acid boil out, I started looking elsewhere. I actually picked the Guest 5/5 charger because of it's color (matched my boat) and it also had great reviews. I've owned it two months now and keep it plugged into the shore power 100% of the time when my boat is not in use. So far, so good! No boiling or otherwise damaged batteries. It switches to maintain mode once the batteries are charged, as indicated by small LED lights on the front that show what it's doing to each battery bank. No need to unplug it during storage. I always turn my boat's battery selector to the "off" position before plugging in the charger. The charger leads attach directly to each battery. You have to purchase the correct "bank number" charger that corresponds to how many individual batteries you want to charge on your boat, RV, etc.For the install, I mounted it near the batteries in the same large compartment. Some people say not to mount in in the area where your batteries are but I open the compartment door so air can circulate. I read that the unit could potentially get warm when charging batteries so I bought a piece of 1/8" aluminum from Home Depot and some 3/8" spacers to create a backing plate against the carpet and spacers to allow airflow behind the Guest charger. Simple install, great investment, and no more worries about my batteries going dead while the boat is in storage.

Was shipped quickly. Exactly what we wanted.

I am unable to grade longevity yet.

Easy install and so far, so good. The cables are only 6 feet long so make sure you check what you need. I had to purchase two 15 foot extension cables which worked great but cost me almost as much as the charger. They included information to contact ProMariner if you needed cable extensions but I gave up after making 10 calls, leaving several messages and e-mailing them. Never even received a response.. Would have been a 5 star review if I received any kind of customer service.

Used charger to wire in/charge 2 ea 12Volt battery in parallel on my boat along with Perko 2501 switch and 6 AWG cable kit. Now able to run and charge two batteries in parallel and/or run singular/parallel battery for Minn Kota trolling motor with Ipilot. Able to spot lock and stay on spot much longer and less stress on singular battery. I purchased 2 additional 5/16 terminal lugs in that batteries and switch had 5/16 terminals.

Seems to be working fine. But time will tell... I'll rereview in a year or two that's when we'll know the truth. But so far so goodWell it's 04/2022 and it's still working it's always in the weather so it's a bit faded but it's still works fine. Again ill give an update in a few more years

I read the reviews on several different marine chargers and decided to go with this one. I installed it in my boat and connected to both my starting battery and my deep cycle battery and it brought them quickly to full charge. It also has a "conditioning" function. I believe this will help to greatly extend my battery life!!

Have a 10/10/10/10 charging our 18 wheeler truck/trailer; 2 - 5/5s charging 2 different boats.Sure makes charging easy vs. hooking up battery chargers. When we need/want to drive/fish, don'twant to be messing with dead batteries.BTW, great funny review by woman about now ex husband....Solution: take wifey fishing with youbut make sure she's catching before you, bait her rod, put her on the front of the boat, cast her rod tothe best spots, make it about her, not you. Nothing like seeing other people glowing with pleasure.

Awesome product!

Great product, easy to install, easy to use.

Exactly what wanted