I’ve learned a lot over the years and learn more every day. For example you would not connect a deep cycle battery with a starting battery. Tighten the cable clamp with the 7/16-inch end wrench. the answer is yes. Doubly so in current boat where the house battery bank is 4 gc batteries. It’s important to first determine whether a conventional starting battery will meet your vehicle’s needs, or whether a deep-cycle or AGM battery is required. This is also known as a maintenance charge because it is ensuring that the battery is at full capacity and is ready to go whenever you need it. Here is East Penn data for the Group 24 “deep cycle”, called a DC24 (typo labeled DC25), and the group 27 called the DC27. We quickly explain how to safely connect four 6 Volt Deep Cycle Batteries or Golf Cart Batteries (GC2) in series parallel to maintain 12 Volts and 440 AH. You will not do any damage to either but what will happen when connected in parallel as you have done is that seeing that they are different they will not both reach the same state of charge as both have different charging properties.. It’s important to first determine whether a conventional starting battery will meet your vehicle’s needs, or whether a deep-cycle or AGM battery is required. Running flooded lead acids (one starting battery and one deep cycle) in parallel would normally result in each being at the same % state of charge. Battery Applications; Compare Deep-Cycle vs. Can you run a deep cycle battery and starting battery in parallel? That voltage will change depending on the charger and battery; however it is usually between 10 to 15 volts. Different vehicles and driving styles can place varying demands on your battery. would there be any reason why i can‘t get the “house” bank to charge up fully? A maintenance charge can be a great way to make sure that your battery has a long life. The motor is on a 2012 Stratos 326XF, In the course of a day of fishing, my starting battery will draw down to around 11.5+/- volts because of running livewell, depth finders, a radio, vhf. Lead acid batteries vary in capacity according to how quickly they are discharged. It is not a good idea to connect a deep cycle battery with a starting battery in parallel as they have different charging properties. For example, if you are trying to use your deep cycle battery for starting your boat engine, you would definitely be affecting the life of your battery if you are even able to get it started that way. To get your motor running, you need short and strong bursts of energy from your battery. I am currently charging all 3 batteries with a 2 bank 15 amp onboard charger. the “starting” bank is a group 27 deep cycle wet cell battery, the “house” bank is 2, group 31 batteries wired in parallel. It will work but it will cause life expectancy of both batteries to be reduced. Tighten the cable clamp with the 7/16-inch end wrench. Many features may not work properly without it. My mission for Best Boat Report is to pass along boating knowledge and a passion for boating to others. It depends on the situation that you are in, however if you are using a lead acid battery you may have different battery life depending on the temperature that you are running your boat in. My name is Kern and I’m passionate about boating. I’ve been running boats since I was 10 years old. link to Should You Wear A Helmet When Wakeboarding. Dual Purpose Batteries. Your deep cycle battery may very well be a flooded lead acid battery, also known as a wet cell battery. If you are discussing a battery’s “cycle”, you are referring to one complete discharge and recharge, known as a cycle. A dual purpose battery can be a good solution for some boat owners; however these batteries are not guaranteed to work as well as a separate cranking battery and a separate deep cycle battery. These batteries tend to be cheaper than gel or AGM cell batteries. This is when the charger sends current to the cells, basically at the maximum safe voltage that they ca deal with. i currently have 2 12V size 29 deep cycle marine batteries connected in parallel and a 3rd size 27 12V deep cycle marine cranking battery in the back of the boat. If your boat battery is struggling to hold a charge or you notice cracks in the case or broken terminals, it should be replaced. There are many that grew up with the idea that the longevity of 6V batteries with their thicker plates will far outweigh that of 12-volt deep cycle batteries. If you have been wondering about your boat motor batteries and how they work, you are in the right spot for the best information. To gain full advantage of each, some riders have them operate separately, keeping the UTV’s starter motor and stock equipment connected to the starting battery and the deep cycle battery connected to peripheral accessories. ... Two deep-cycle batteries connected in parallel by a single terminal. What then is the role of a dual purpose marine battery? Generally speaking, a deep cycle battery simply could fail when the time comes to start a motor. ... Two deep-cycle batteries connected in parallel by a single terminal. Are you thinking about buying a new boat? This type of arrangement is used to increase capacity (in this case 12v 240Ah). If you are looking for more info, read on! If you want to get the in-depth information about these different kinds of batteries; keep reading on as we will break it down even further. You should always try to go by whatever it is that your manufacturer has recommended for your battery. if so, you might be shocked to learn just how expensive boats are today. These batteries are able to deliver moderate power for starting. The second stage is the absorption charge. Look at the systems that people come to this forum to get help with. I am planning to fit 2 solar panels (160w each installed in series), to a 60A MPPT charge controller, to 2 new & identical 12v 110AH deep cycle leisure batteries (Installed in parallel) (It will be a stand-alone system, as it was seeming too complicated to sort ‘split charge system’ with blue motion/stop-start etc.. You really shouldn't ride without one. You shouldn’t rely on your deep cycle battery to start your boat engine all of the time because it isn’t designed to do that. Begin at one battery. When connection 6 volt batteries together, it is recommended to use thick diameter cable. If you are in a pinch, you could attempt to do this if you are familiar with all of the technology related to your boat. When running two batteries, one for only engine cranking and the other for console/accessories/lights and pumps, the negative terminals of the batteries typically are connected making a common ground. Deep Cycle Batteries and their capacity. Deep cycle batteries come in a variety of subtypes, including flooded wet-cell batteries, absorbed glass mat (AGM) batteries, and gel-type batteries. A deep cycle is designed to draw down slowly and recharge slowly. Your charger should be monitored so that you aren’t overcharging them either. The third stage is the float charge. When these kinds of things happen, you may be significantly damaging your battery or simply reducing its available life cycle. Deep cycle batteries are designed to be drained and recharged many times repeatedly where as that is not the case with a cranking battery. One question involves the use of different batteries. This is just some of the information that you can get about deep cycle batteries. Generally speaking, most deep cycle batteries have a rating of 20 hours. While it is impossible to guarantee any one battery’s life based on how it will be used, if you are taking good care of your battery and using it appropriately, you should find yourself on the higher end of these ratings. Each of these have different quirks and maintenance needs. A grp 31 deep cycle battery has an 195 min RC @ … Generally speaking, your battery capacity should be better in warmer environments and will be slightly worse in colder temperatures. If you were going to buy something new anyway, will a grp 31 deep discharge battery fit into your spot. Facebook. Easily create a Forum Website with Website Toolbox. People want to know if they really need a cranking or a starting battery or if they could just be using their deep cycle battery when starting up their boat motor. The biggest difference between a starter battery and a cycle battery is the way they discharge their energy. i currently have 2 12V size 29 deep cycle marine batteries connected in parallel and a 3rd size 27 12V deep cycle marine cranking battery in the back of the boat. I run two batteries, one for starting and one deep cycle for similar functions that you describe. We assume when you plan to connect your batteries in parallel, you are using the same type, age and size of batteries. These thin plates are the exact reason why you can’t really use a cranking battery as a “continuous” deep cycle one, because your battery is going to be very prone to overheating. Deep cycle batteries come in a variety of subtypes, including flooded wet-cell batteries, absorbed glass mat (AGM) batteries, and gel-type batteries. The unit is completely sealed so that there is no water loss inside of the battery. That is exactly what your deep cycle marine battery is designed to do. For example; 4 x 6V 150Ah batteries wired in series/parallel will give you 12V at 300Ah. However, if you do that you are probably just paying more in the long run and there is a better option for you anyway if you are trying to find one battery for both functions. A deep cycle battery is meant for slow constant discharge while a starting battery is made for to provide the initial oomph to start the battery and then the alternator does the rest. It is not equipped for the job and you will end up simply damaging your battery or at least reducing its usefulness in the long run. Build a lithium battery by paralleling identical cells to get the required Ah, and put those groups in series, balanced, to get voltage. The plates inside of a deep cycle battery has fewer and thicker plates so that the battery is able to easily provide that consistent power. In theory, yes, a layperson could parallel their own deep-cycle battery setup; however, there are a number of traps which make … Note: Your browser does not have JavaScript enabled. Make a parallel connection of the deep cycle batteries by connecting all the positive terminals together. If you have heard of equalizing your battery, you may have heard that this is a great practice and you need to do it. As a result, many new boat owners rely on boat loans to finance the purchase of... Should You Wear A Helmet When Wakeboarding? I want to put a brand new 160AH battery in parallel with the existing one to extend runtime and get me through the night. You can place starting and deep cycle batteries in a parallel setup. The plus of the first battery and the minus of the last battery are then connected to the system. With secondary (rechargeable) batteries – only use batteries of the same brand and age and make sure all the units are fully charged before connecting them together in parallel. Once your boat is running, it is similar to your car in the sense that it doesn’t need huge bursts of energy. There are many that grew up with the idea that the longevity of 6V batteries with their thicker plates will far outweigh that of 12-volt deep cycle batteries. At O'Reilly Auto Parts, we have deep cycle batteries to fit most boats and marine applications. Using your battery for very small doses of power would be impractical and could also harm your battery life as well, so you should honestly try to use your battery in simple and normal ways and you should see some pretty good results. We would strongly discourage anyone from connecting batteries in series or parallel applications, if the batteries are not identical in age, size and type. The first stage is the bulk charge. A cranking battery is designed to send short bursts of energy that exceed the output of what a deep cycle one does at any given time. My battery still seems to be working as good as new despite its age. The answer here is somewhat complex. Wondering why that is on the E-tech. The basic concept is that when connecting in parallel, you add the amp hour ratings of the batteries together, but the voltage remains the same. To purchase battery connector cables, click here. However, this is not a simple calculation. Two 100Ah deep-cycle batteries joined in parallel would provide 200Ah of 12V power, three would provide 300Ah of 12V power, and so on. If you use your deep cycle battery down to 10% of its capacity, you will not get as long of a lifetime as you would if you were always cycling the battery when it hit 50%. If you are completely new to this, it is something you should research pretty thoroughly because you do not want to harm your battery or cause any other damage in the process. Batteries are more complex than they seem, so you should always use them in the intended way to get the most out of your purchase. Your deep cycle battery isn’t designed for starting a boat, so if you try to use it that way all the time, you are going to erode its ability over time and pretty much make your battery useless. This is the stage where the voltage starts to lower as resistance in the battery increases. When hooking 2 batteries in parallel, charging my be an issue, especially if you mix types (wet cell vs. agm). They are more work because replacing the water can be annoying, but this is the best value battery that most boat owners buy. The best chargers generally tend to be the ones that have three stages; and these chargers also tend to have a lot of safety features equipped including keeping you safe until a battery is properly connected. They combine the use of both batteries into one which seems like it would be convenient, however you should be careful to make sure that your battery performs well because these batteries can have problems at time when they get drained. 2/0 gauge Excelene welding cable has high flexibility and is rated for 600 volts. Indeed, a typical cycle for a deep cycle battery would start at 100% capacity, followed by discharge of the battery to between 20 and 50% of its original capacity, and then recharge back to 100%. When he's not running the boat, he's likely anchored up along the beach with his wife, kids and good friends enjoying a great day at the coast. True, there is a dual purpose marine battery … Begin at one battery. The amp hour is a measure of how much your battery can output when it is fully charged, over time, until it is completely out of power. That means that you could operate your battery for around 20 hours without it being completely out of power. We also participate in programs from eBay, CJ.com and more. link to What Is the Best Way To Finance A Boat? This site is supported by our participation in affiliate programs and page advertisements. Dailymotion,  A properly cared for battery can last 7-10 years, that's deep cycle or starting. One key area where the deep cycle marine battery is different is its plates. Regardless of what battery charger you choose, you should always read the manual and make sure that you are following the manufacturer instructions before you go ahead with any charging. As opposed to the deep cycle battery, a cranking battery has a lot of thin plates. The best way to take care of your deep cycle battery is to perform regular maintenance on them. Different vehicles and driving styles can place varying demands on your battery. If you are out in harsh conditions, a dual purpose battery would also be more prone to overheating due to a compromise of the plate thickness that is found inside of the battery. My customer wanted more batttery power. Deep cycles are much better suited to abuse than are starting batteries. Even if the boat motor does get started when using a deep cycle battery; you are wearing down the battery and using it for something that it isn’t designed for. Vimeo,  With this said, our opinions are always our own and we do not recommend products we do not like. I have heard before that only brand new batteries should be paralleled. It is best, however, to recharge at a low amp rating for a long time, rather than doing a quick recharge. There are theoretical ways that this should work, like if you just had a super strong deep cycle battery. To gain this extra durability they prefer to use only 6-volt batteries and thus need to create a series parallel configuration. The thinner more porous plates on a starting battery physically deteriorate if deeply discharged. However, if you are trying to find a battery to use for continuously starting your boat, you should definitely not use a deep cycle battery. I've used deep cycle batteries as starting batteries for a 225HP outboard for > 15 years with no problems. What your boat does need is continuous and reliable power from its battery source. I have installed a properly sized switch on my second battery that I switch off when I switch off my master to the main battery. Yes. If you try to start your boat motor with your deep cycle battery, you are risking a pretty big chance that the motor may not start at all. Insert one cable into the top post connector's cable clamp. To gain full advantage of each, some riders have them operate separately, keeping the UTV’s starter motor and stock equipment connected to the starting battery and the deep cycle battery connected to peripheral accessories. Please enable JavaScript in your browser settings. When you equalize a lead acid battery, you are sending a controlled overcharge to the battery to extend its life and make up for lost capacity. 0. I see people who use deep cycles in their starting circuit only get 1-2 years out of them, usually less. Kern is a life long boater who finds great happiness sitting at the helm of a boat running on the open water. PARALLEL UNIVERSE. Yes, deep cycle batteries of adequate amperage will start a diesel engine no problem. This breaks loose a lot of debris that may be stored up on your battery. How is the deep cycle battery designed to do this? Dual purpose marine batteries. A deep discharge (down to 20% of power) can be recharged to 100% over and over without damaging the battery. Starter batteries deliver short yet high current burst for cranking the engine while discharging only a small part of their capacity. Although it can be done, use a deep cycle battery for starting a boat, it is not recommended. If you are trying to measure the capacity of your deep cycle battery, you would do it in amp-hours. If your boat came from the factory with only one battery, or with two batteries of inadequate size, consider installing a second battery bank. This cranking battery sends power to the engine when the ignition switch is flipped on and that’s why a cranking battery is also known as a starting battery. I am currently charging all 3 batteries with a 2 bank 15 amp onboard charger. A question or 2 about battery hookup on 2012 225HO. Starting Batteries. Those bursts get the whole system moving and don’t really last all that long until your boat is running and should be able to operate on your deep cycle battery. When connection 6 volt batteries together, it is recommended to use thick diameter cable. YouTube,  For example: two 6 volt 4.5 Ah batteries wired in parallel are capable of providing 6 volt 9 amp hours (4.5 Ah + 4.5 Ah). We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites. Or connect a group 24 with a … This why you will hear about 3-stage chargers. Additionally I run 3 deep cycle batteries for my Minnkota electric motor 36 volt system and these are charged by the Minnkota digital charger when connected to shore power. Starting Batteries. If you are going through a season where you aren’t using your batteries at all, you should still be performing somewhat regular maintenance and cleaning and charging them so that they stay in good shape. Make a parallel connection of the deep cycle batteries by connecting all the positive terminals together. It has specific design differences from a cranking battery to perform these jobs. Let’s break it down. However their individual normal life expectancies may become reduced and their individual specs do not fully add when in parallel. Or connect 2 old batteries with 2 brand spanking new batteries. Supported videos include: 12V 150Ah batteries wired in parallel will give you only 12V, but increases capacity to 300Ah. When compared to a cranking battery, you will find that a deep cycle battery is much less likely to overheat because their thick plates allow them to withstand the heat over long periods of time. I have a VW T5. I already tried all my accessory wires on the second battery but they would not run through their test sweep before staring the outboard and no function at all when the 225HO was running. If you are not using a battery quite as often, a dual purpose marine battery may be a great option for you, but you just need to find one that offers a lot of quality and doesn’t compromise too much for the performance that you need. Connecting Batteries in Series Parallel to Increase Battery System Capacity. This is what happens after the battery reaches a full charge during the absorption stage. Just like a seatbelt in a car, a wakeboarding helmet is your first... Hey there! This is, of course, because there are a lot of different avenues to buy things from these days and you can really buy a product that you think you are familiar with when it actually has a completely different usage than what you thought. The deep cycle battery can run all of your electronics like your GPS system, radio, or things like sonar and other various electronic devices on board. I am planning to fit 2 solar panels (160w each installed in series), to a 60A MPPT charge controller, to 2 new & identical 12v 110AH deep cycle leisure batteries (Installed in parallel) (It will be a stand-alone system, as it was seeming too complicated to sort ‘split charge system’ with blue motion/stop-start etc.. For saltwater applications, AGM or gel cell batteries are highly recommended to prevent chorine gas. You should not attempt to use a deep cycle battery for starting your boat, even if it seems like it may be possible. He had a single group 24 deep cycle battery and I install to group 27 batteries. Matthew i have a boat with a two bank system. i have them all hooked up to a 20Amp marine charger. How long your battery will last depends a lot on how well your battery is maintained. The lifetime of your batteries will also be influenced by their typical depth of discharge. Adding the two more GC batteries to bring total to over 400 amp to feed the greedy reefer meant I had bulid a battery box in the engine room for the group 27 deep cycle engine battery. I have two deep cycle batteries in my Airstream, in the panel there is a fused bus bar (that appears to be faulty) so the solar panels only charge the one battery. One of the reasons that you shouldn’t use your deep cycle battery for starting your boat is that it will kill the performance of the battery. I recommend you read very carefully the advice given above by LourPitcher. The East Penn DC-24 and DC-27 are the same exact batteries we call “marine deep cycle” and the same exact batteries West Marine labels as Sea Volt Deep Cycle. If you are charging your lead acid battery, you should be aware that this charging has 3 stages to it. I have a VW T5. It will shorten the life of your deep cycle charging it so fast. Large images may take a few minutes to appear. If it is cold, the battery will have less of a capacity but it may last longer, surprisingly enough. During the bulk charge state, your battery will charge up for most of its capacity, which is how it gets its name. Each of these have different quirks and maintenance needs. Parallel coupling involves connecting the plus poles of multiple batteries to each other and the same with the minus poles. Your deep cycle battery should last anywhere from 1 to 2 years up to 6 to 8 years on the high end. Usually, your charger is putting out a lot of voltage in this stage, closer to the higher levels that you would have seen during the bulk charge. The stages are bulk, absorption, and float. These chargers also tend to be cooled by a fan and can even adjust for things like the temperature while making sure that there are no short circuits.

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