My boat has 2 Deep-cycle batteries. Will it charge both batteries and if so, which would be the best way to connect them (in-line or parallel)??
1786604
Yes, this panal has the capacity to charge your batteries, just remember, the 20w is at optimal environmental conditions, sun, angle positioned ect...I always connect in parallel. You didn't mentioned the 'what' you are utilizing the batteries for...heavy watts out, need more watts in. Good luck!
1786605
This is a good solar panel. I have 2 batteries connected parallel, + to +, and - to -. This gives me the same voltage- 12 volts. I run my garage door opener and some accessories in my garage off a power inverter. The Ramsond solar charge regulator shuts off when batteries are full. Like T.J. said, make sure you aim the panel for best results, and hopefully its not foggy where you keep your boat!
521578
Yes, I have two deep cycle marine batteries that I charged using this Schumacher model.
181776
I have two 12V22AH batteries wired in series producing 24 volts. It all depends what your using the batteries for. I charge mine on a 2 Amp.24 Volts charger. It may take more but certainly not the charge your suggesting. Be careful. You may explode the batteries or ruin them. How are you wiring them? Series or parallel?
308239
If you're referring to deep cycle marine batteries, they will lose their charge through. You can buy a charger for yourself or you can go to a place like batteries plus and have them do it. Of course, if your house doesn't have electricity, then recharging can be tricky!
1498175
Most boats will have a battery selector switch. #1 battery, #2 battery, Both batteries. If you do not have a selector switch this can be used to charge both batteries while the engine runs, but with the engine off you can draw down one (stereo, trolling motor, etc.) while still not affecting your ability to start with the other battery. How the batteries are wired (in parallel) will determine how your system operates. To use this relay you need to split the system, for example 1 house battery, 1 starting battery. The manual switch will still give you more control over your system, if you remember to use it.
2181483
Yes, I keep them hooked up to 3 batteries that power my trolling motor on my boat. They do a wonderful job and while sloppier, have lasted much better than those "boat" battery charging units that coast enough to buy ten of these. I keep three of these hooked up all the time.
2248633
As Will T. Said...Deep Cycle Marine Battery. You also need a battery charger and you have to charge the battery back to 100% after each use.
1456453
I would say yes to deep cycle battery charging,no start mode.it won't charge a completely dead battery,it has to have at least 7 volts I think.i thought that was odd but that's the way it is.
1567138
Yes, the product manual shows a wiring diagram for how to wire 2 12v batteries in parallel. I am only running one battery right now, but I was originally planning on doing this. This kit works so well with my small trailer I don't even need 2 batteries. I have an 18ft trailer and low power requirements. If you are in the sun/partial sun they trickle charge all day and only start using juice in the evening/night. My battery rarely goes below 85% and is usually fully charged by 8-9am. There are videos that will help with your installation on the GoPower web site and YouTube.
1437920
Yes, it is a good choice. Make sure you have a battery combiner between your two batteries so one does not drain into the other, but both get charged. This battery is a deep cycle battery, meaning it can be drained flat and not damaged. www.westmarine.com has the battery combiner.
164167
When you connect them like this, they operating in parallel - same as if you had wired the batteries in parallel yourself. Each battery will receive the same charging voltage. For some batteries, this this will be the correct charging voltage, However, the other batteries could be over-charged or under-charged. All the Battery Tender sees is one battery!This is answered on the Battery Tender website. The explanations are excellent, with clear diagrams. Find this info in the education section - it's a on pull-down tab, at the top of the homepage. A good reference for all battery charging and connection questions. When you connect them like this, they operating in parallel - same as if you had wired the batteries in parallel yourself. Each battery will receive the same charging voltage. For some batteries, this this will be the correct charging voltage, However, the other batteries could be over-charged or under-charged. All the Battery Tender sees is one battery!This is answered on the Battery Tender website. The explanations are excellent, with clear diagrams. Find this info in the education section - it's a on pull-down tab, at the top of the homepage. A good reference for all battery... » Read More When you connect them like this, they operating in parallel - same as if you had wired the batteries in parallel yourself. Each battery will receive the same charging voltage. For some batteries, this this will be the correct charging voltage, However, the other batteries could be over-charged or under-charged. All the Battery Tender sees is one battery!This is answered on the Battery Tender website. The explanations are excellent, with clear diagrams. Find this info in the education section - it's a on pull-down tab, at the top of the homepage. A good reference for all battery charging and connection questions. « Show Less
206822
I have two of the mentioned chargers. I can't answer your question since I keep my chargers plugged in to 110V when boat is not being used. I have owned for a couple of years and am very satisfied with product? These are solid state chargers and should not drain batteries unless there is a problem with chargers or possibly wiring connections.
1226866
I have run my boat battery down several times and within 4 hours it is completely charged. This would of course on the life of your battery.
1680654
It is not recommended to daisy chain deep cycle batteries when charging. It is my understanding that if one of the batteries fails it will draw down the others.
1624690
I guess it will work while your batteries accept 14 volts of charge. I have 2 batteries on my sailboat and both are been charged simultaneously. Just check that the coach battery is a 12 volts barttery, for the car batery no problem
999224
It should trickel charge both. It will not charge if one of the batteries is dead. I use it on my 2 boats and a jet ski, but they all have one battery.
1680652
This should not be used for deep cycle batteries. From Amazon website Maintain up to four 12 Volt standard, starting batteries (of similar type - in parallel). Amperage is divided evenly among connected batteries. (NOT recommended for deep cycle batteries)