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Buy Deep Cycle Marine Battery


The cranking battery has more yet thinner plates to give a fast voltage spike to crank an engine, but is not intended to maintain high power output for long periods. Yes, a deep cycle battery can be used to start your motor in a pinch, but a two- or three-battery system is highly recommended to separate the engine battery from the accessory (house) batteries.




buy deep cycle marine battery


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All Lifeline deep-cycle batteries are hand-made in the USA. These batteries are Coast Guard approved and have had to pass demanding mil spec requirements as they are onboard numerous US Military vessels. They are designed to deliver industry leading reserve capacities and life-cycle capabilities. The perfect combination of premium quality materials and perfected proprietary processes have catapulted Lifeline to an industry leader in value and customer satisfaction. All Lifeline deep cycle batteries are backed with an industry leading 5 year warranty.


Learn more about the ratings for marine batteries here, and browse our recommended offerings for RV and marine batteries here. Here at MK Battery, we offer only the best in quality, whatever the purpose of their battery. Contact us to learn more.


5. Smaller Footprint: Not only are lithium batteries lighter, they also take up less space. For instance, you can buy a 24v lithium battery that is the same size as a 12v, group 27 deep cycle battery.


For trolling motors use, we recommend a battery with AT LEAST a 100 amperage hour rating, a Group 27 rating and 175 minutes of Reserve Capacity (RC). Due to shipping restrictions, we do not sell marine batteries at TrollingMotors.net. However, both types listed above should be widely available in most areas. Lithium batteries are more difficult to find but we recommend Lithium Battery Power LLC if you decide to go that route.


Deep cycle batteries are the recommended batteries to use in solar installations. There is a range of different deep cycle batteries, including flooded lead acid, sealed lead acid, and lithium ion batteries. Flooded lead acid batteries are the most inexpensive option and are available at most big-box and auto stores. They are also the most high maintenance. Sealed lead acid batteries store 10 to 15 percent more energy than lead acid batteries and charge up to four times faster. Lithium ion batteries are the most expensive options, but also last four times longer than lead acid batteries, weigh much less, and require minimal maintenance which makes lithium ion solar battery become a great option to be used for RV battery, marine battery, and boat battery. Deep cycle batteries are also available in a variety of voltage batteries (12v, 24v, 48v).


A deep-cycle battery is a battery designed to be regularly deeply discharged using most of its capacity. In contrast to car batteries which only provide short bursts of energy, deep cycle batteries are designed to provide sustained period over a longer period of time. The mainstream battery types in solar battery backup systems include Flooded Lead Acid (FLA) batteries, Gel Cell batteries, Absorbed Glass Mat (AGM) batteries and lithium batteries. Depending on the voltage, deep cycle batteries are divided into 12v battery, 24v battery, and 48v battery. The most common deep cycle RV battery, boat battery, and marine deep cycle battery are 12V, and the deep cycle golf cart batteries are normally 24V or 48V.


Marine batteries come in an array of different BCI sizes. The most used marine battery sizes include batteries that fall into Group 24, Group 27, Group 31, and 8D. The RELiON RB100-HP is a Group 31 marine battery and the RB300-HP 12V 300Ah battery falls in the 8D battery group size. Common applications for the 100-HP include bass boats and charter fishing boats and common applications for the 300-HP include large sailboats and catamarans.


Deep cycle batteries are designed to provide stable energy and continuous power to your trolling motor over a longer timeframe. These batteries are used to powerhouse loads that commonly include navigation aids, fish finders, running lights, radios, and trolling motors. Depending on what you are looking for; you can get the best of both worlds with the dual-purpose motor, but if you are looking for a battery that will last longer in your trolling motor, then be sure to check out the deep cycle batteries. All RELiON products are deep cycle and include both lithium deep cycle batteries and AGM.


Boat starting batteries are used for starting the ignition. With marine batteries, it is necessary to start the engine and then provide enough power to sustain the motor and devices connected to the boat. RELiON offers the RB100-HP, which is a Group 31 battery, and the RB300-HP, which is a Group 8D battery. Our High Performance series batteries are both marine starting batteries and deep cycle batteries to power your onboard electronics. The RB100-HP has increased peak amps over our standard batteries. This increase in peak amps can be used to start even the most demanding of outboard motors. Essentially, starting batteries discharge a large amount of energy for a short period of time making them perfect for starting your outboard engines.


Trolling motor batteries are specially designed batteries for a boat trolling motor. The purpose behind them is to provide electricity over a more extended period of time when slow trolling through fishing areas. The number of lithium batteries you need depends on your trolling motor voltage. RELiON offers 12V and 24V lithium batteries. If you have a 12V trolling motor, then you can choose from several 12V lithium battery options. If you have a 24V trolling motor, you can use 2 12V batteries in series or a single 24V battery. If you have a 36V trolling motor you can use 3 12V batteries in series. RELiON offers several 12V lithium batteries options to choose from. Like a fuel tank gauge, the amp hours will determine how long your battery will last. The amp-hour provides a measurement of charge within your trolling motor battery. The most common lithium trolling motor batteries are going to be lightweight and provide enough amp-hours to optimize your time fishing. RELiON offers great options for your trolling motor including the RB52, RB60, RB75, RB80, and RB100, which are 52Ah, 75Ah, 60Ah, 80Ah, and 100Ah deep cycle batteries. To get the same runtime as a wet or AGM lead-acid battery, you will need to use a lithium battery that is 60% the capacity of that lead-acid battery. If you want more time on the water, size up from there, or add additional batteries to your boat's battery bank.


LiFePO4 marine batteries can also be charged with most alternators. Depending on the quality of the alternator, it should work with LiFePO4 batteries. Low-quality alternators with poor voltage regulation can cause the BMS to disconnect LiFePO4 batteries. If the BMS disconnects the batteries, the alternator could be damaged. To protect your LiFePO4 battery and alternator please be sure to use a compatible high-quality alternator or install a voltage regulator. Please contact RELiON technical support if you need assistance.


The subject of batteries could take up many pages. All we have room for here is a basic overview of batteries commonly used in photovoltaic power systems. These are nearly all various variations of Lead-Acid batteries. For a very brief discussion on the advantages and disadvantages of these and other types of batteries, such as NiCad, NiFe (Nickel-Iron), etc. go to our Batteries for Deep Cycle Applications page. These are sometimes referred to as "deep discharge" or "deep cell" batteries. The correct term is deep cycle.


Typical efficiency in a lead-acid battery is 85-95%, in alkaline and NiCad battery it is about 65%. True deep cycle AGM's (such as Concorde) can approach 98% under optimum conditions, but those conditions are seldom found so you should figure as a general rule about a 10% to 20% total power loss when sizing batteries and battery banks.


An important fact is that ALL of the batteries commonly used in deep cycle applications are Lead-Acid. This includes the standard flooded batteries, gelled, and sealed AGM. They all use the same chemistry, although the actual construction of the plates, etc varies.


Batteries are divided in two ways, by application (what they are used for) and construction (how they are built). The major applications are automotive, marine, and deep-cycle. Deep-cycle includes solar electric (PV), backup power, traction, and RV and boat "house" batteries. The major construction types are flooded (wet), gelled, and sealed AGM (Absorbed Glass Mat). AGM batteries are also sometimes called "starved electrolyte" or "dry"because the fiberglass mat is only 95% saturated with Sulfuric acid and there is no excess liquid.


The lifespan of a deep cycle battery will vary considerably with how it is used, how it is maintained and charged, temperature, and other factors. It can vary to extremes - we have seen L-16's killed in less than a year by severe overcharging and water loss, and we have a large set of surplus telephone batteries that see only occasional (10-15 times per year) heavy service that was just replaced after 35+ years. We have seen gelled cells destroyed in one day when overcharged with a large automotive charger. We have seen golf cart batteries destroyed without ever being used in less than a year because they were left sitting in a hot garage or warehouse without being charged. Even the so-called "dry charged" (where you add acid when you need them) have a shelf life of 18 months at most. (They are not totally dry - they are actually filled with acid, the plates formed and charged, then the acid is dumped out).


These are some typical (minimum-maximum) expectations for batteries if used in deep cycle service. There are so many variables, such as depth of discharge, maintenance, temperature, how often and how deep cycled, etc. that it is almost impossible to give a fixed number.


There is generally no problem with this, providing that allowance is made for the lower cranking amps compared to a similar size starting battery. As a general rule, if you are going to use a true deep cycle battery (such as the Concorde SunXtender) also as a starting battery, it should be oversized about 20% compared to the existing or recommended starting battery group size to get the same cranking amps. That is about the same as replacing a group 24 with a group 31. With modern engines with fuel injection and electronic ignition, it generally takes much less battery power to crank and start them, so raw cranking amps is less important than it used to be. On the other hand, many cars, boats, and RV's are more heavily loaded with power sucking "appliances", such as megawatt stereo systems etc. that are more suited for deep cycle batteries. We have used the Concorde SunXtender AGM batteries in some of our vehicles with no problems. 041b061a72


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