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Trojan batteries have been used in standalone power systems in remote cabins for the past 25 years with great success. Because of their low initial cost, they are the most affordable true, deep cycle batteries. The L16RE battery is a heavy-duty cousin of the golf cart battery with much thicker lead plates and nearly twice the capacity.Trojan’s Renewable Energy (RE) Series is a line of technologically advanced lead-acid deep cycle batteries, optimized for renewable energy applications such as solar PV, small wind, and micro hydro. They have heavier duty separators and plates designed for longer life and their warranty has been extended to two years free replacement and 60 months additional pro-rated on the L16s models.
Weight: 118 lbs
Voltage: 6 V
Capacity @ 20hr discharge rate: 325 Ah
Capacity @ 100hr discharge rate: 360 Ah
About Trojan Battery
The Trojan Battery Company was founded in 1925 with their headquarters located in California. They are the world’s leading manufacturer in deep-cycle batteries. Trojan has four manufacturing plants in California and Georgia with two research and development centers that are dedicated solely to deep cycle battery technologies. They also have offices located in Europe, UAE and Asia. They are known in the industry for their durability as well as their high cycle life.
The Trojan Battery Company are supporters of the environment with a focus on recycling programs and clean energy initiatives. Trojan’s batteries are 97% recyclable. They have a partnership with Southern California Edison which has helped them save over 8 million kilowatt hours and cut CO2 emissions by 12 million pounds which has considerably reduced their annual energy consumption. Trojan is mindful of their carbon foot print.
With over 85 years of manufacturing battery experience, Trojan Battery Company delivers superior high powered deep cycle batteries for a variety of applications, including golf and utility vehicles, marine and recreational applications, aerial work platforms, floor machines and renewable energy systems. Trojan backs their products by exceptional technical support and customer service. All of Trojan’s batteries go through rigorous testing procedures that adhere to BCI and International Electrotechnical Commission (IEC) test standards. Trojan takes pride in the reliability of their products and services with a commitment to developing state-of-the-art ecologically friendly storage solutions that meet customer needs here in the United States and around the world.
The following table shows a complete list of all the deep cycle lead-acid batteries available through Webo Solar. The table indicates which batteries are flooded and which ones are sealed; it also indicates some basic specs such as voltage, capacity, dimensions and weight.
|Manufacturer||Type||Part No.||Volts||Ah @ 20 hr||Ah @ 100 hr||Length (in)||Width (in)||Height (in)||Weight (lbs)|
The first and most important step to configure your battery back is to know your system's voltage. Small systems used in RVs and boats are usually 12V. It is recommended to use 24V or 48V for medium sized energy systems and always 48V for large systems. Some systems can even go up to 60V, however, 12V, 24V and 48V are the standard in solar and renewable energy systems. Whatever your system voltage is, keep that number in mind since it will be consistent across your system design; changing your system voltage down the road could be a costly alternative.
Another factor is to know the space available for the batteries, this is especially true for mobile applications and systems with a designated battery enclosures. These type of enclosures are usually designed for a certain type and number of batteries, for example, four L-16 batteries.
Knowing the type of battery you want is also part of the selection process. You only want to use deep-cycle batteries in renewable energy systems. Lead acid batteries are the most common, they can be flooded or sealed. Flooded batteries require periodic maintenance such as refilling water levels while sealed or VRLA batteries are considered maintenance free. Flooded batteries are seen in most renewable energy systems mainly because of their lower cost. Applications in remote locations with difficult access call for sealed batteries that do not require constant human supervision. Both batteries, flooded and sealed, are comparable in terms of performance; the determining factors are the application and cost.
A factor that requires careful consideration is your energy needs which ultimately will determine the size of your battery bank. Technically speaking, the larger the battery bank, the better. A large battery bank will reduce the depth of discharge of each cycle, thus extending the life of the batteries. Realistically, not everybody has the budget for an oversized battery bank.
Once the above factors have been figured out, the rest is relatively easy. The number of batteries in the bank will be determined by the voltage, if you have a 48V system you will need eight 6V batteries or twelve 4V batteries.
Your energy requirements will determine the capacity, or the total amount of energy stored in the battery bank. It is usually measured in charge / discharge cycles. This part can get highly technical so we are going to simplify it for the purpose of this article. The capacity of your storage is measured in Ampere-Hour or Ah per cycle. To extend the life of the batteries it is recommended to discharge your batteries less than fifty percent per cycle (50% depth of discharge or DOD). So if you know that you need 350Ah to power all your loads on daily basis, you should consider a 700Ah battery bank for a healthy life cycle. In the same scenario, a 900-1000Ah battery bank won’t hurt, it will provide additional energy on the days when it is needed and will also help extend the life of the batteries by reducing the depth of discharge of each cycle. Needless to say it will also cost more money.
Note: As a rule of thumb, the larger the size of the battery bank, the lower the nominal voltage of each battery. For example, 12V batteries are only recommended in small systems with one or two batteries. 6V batteries are ideal for medium size banks and are widely used in renewable energy systems. 4V and 2V are high capacity batteries reserved for large energy systems.