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Deep Cycle Battery Banks for Solar Arrays

Battery banks are an essential part of a solar panel array system.  It is important to know that the deep cycle batteries used for such a system should be made for your solar panel array.  In other words, although deep cycle batteries look a lot like car batteries they are far from one.  Actually, if you were to make a comparison for a deep cycle battery bank used for a solar array, a golf cart battery would be a more suitable comparison.

UPG Sealed Lead-Acid Battery — AGM-type, 12V, 110 Amps, Model# 45824

UPG Sealed Lead-Acid Battery — AGM-type, 12V, 110 Amps, Model# 45824

This state-of-the-art lead-acid battery from UPG produces higher cranking amps, along with lower self-discharge and greater vibration resistance. AGM (absorbed glass mat) battery design requires no water additions and can be operated in any position and in close proximity to people and sensitive equipment. Volts: 12, Amps: 110 Amps @ 20 hours: 110 Sealed, no-leak design Heavy-duty, no-corrosion terminals
UPG Sealed Lead-Acid Battery — AGM-type, 12V, 200 Amps, Model# UB-4D

UPG Sealed Lead-Acid Battery — AGM-type, 12V, 200 Amps, Model# UB-4D

This state-of-the-art lead-acid battery from UPG produces higher cranking amps, along with lower self-discharge and greater vibration resistance. AGM (absorbed glass mat) battery design requires no water additions and can be operated in any position and in close proximity to people and sensitive equipment. Volts: 12, Amps: 200 Amps @ 20 hours: 200 Sealed, no-leak design Heavy-duty, no-corrosion terminals
UPG Sealed Lead-Acid Battery — AGM-type, 12V, 250 Amps, Model# UB-8D

UPG Sealed Lead-Acid Battery — AGM-type, 12V, 250 Amps, Model# UB-8D

This state-of-the-art lead-acid battery from UPG produces higher cranking amps, along with lower self-discharge and greater vibration resistance. AGM (absorbed glass mat) battery design requires no water additions and can be operated in any position and in close proximity to people and sensitive equipment. Volts: 12, Amps: 250, Battery Weight (lbs.): 160, Dimensions L x W x H (in.): 20.47 x 10.55 x 9.65 250 Amps @ 20 hours Sealed, no-leak design Heavy-duty, no-corrosion terminals
UPG Sealed Lead-Acid Battery — AGM-type, 12V, 50 Amps, Model# UB12500

UPG Sealed Lead-Acid Battery — AGM-type, 12V, 50 Amps, Model# UB12500

This state-of-the-art lead-acid battery from UPG produces higher cranking amps, along with lower self-discharge and greater vibration resistance. AGM (absorbed glass mat) battery design requires no water additions and can be operated in any position and in close proximity to people and sensitive equipment. Volts: 12, Amps: 50 Amps @ 20 hours: 50 Sealed, no-leak design Heavy-duty, no-corrosion terminals
UPG Sealed Lead-Acid Battery — AGM-type, 12V, 90 Amps, Model# UB12900

UPG Sealed Lead-Acid Battery — AGM-type, 12V, 90 Amps, Model# UB12900

This state-of-the-art lead-acid battery from UPG produces higher cranking amps, along with lower self-discharge and greater vibration resistance. AGM (absorbed glass mat) battery design requires no water additions and can be operated in any position and in close proximity to people and sensitive equipment. Volts: 12, Amps: 90 Amps @ 20 hours: 90 Sealed, no-leak design Heavy-duty, no-corrosion terminals
UPG Sealed Lead-Acid Battery — Gel-type, 6V, 200 Amps, Model# 45966

UPG Sealed Lead-Acid Battery — Gel-type, 6V, 200 Amps, Model# 45966

This state-of-the-art lead-acid battery from UPG produces higher cranking amps, along with lower self-discharge and greater vibration resistance. Ideal for electric golf carts and other 6V applications. Volts: 6, Amps: 200, Application: Electric golf carts and other 6V applications Amps @ 20 hours: 200 Sealed, no-leak design Heavy-duty, no-corrosion terminals
UPG Sealed Lead-Acid Battery — AGM-type, 12V, 35 Amps, Model# UB12350

UPG Sealed Lead-Acid Battery — AGM-type, 12V, 35 Amps, Model# UB12350

This state-of-the-art lead-acid battery from UPG produces higher cranking amps, along with lower self-discharge and greater vibration resistance. AGM (absorbed glass mat) battery design requires no water additions and can be operated in any position and in close proximity to people and sensitive equipment. Volts: 12, Amps: 35 Amps @ 20 hours: 35 Sealed, no-leak design Heavy-duty, no-corrosion terminals
UPG Sealed Lead-Acid Battery — AGM-type, 12V, 75 Amps, Model# UB12750

UPG Sealed Lead-Acid Battery — AGM-type, 12V, 75 Amps, Model# UB12750

This state-of-the-art lead-acid battery from UPG produces higher cranking amps, along with lower self-discharge and greater vibration resistance. AGM (absorbed glass mat) battery design requires no water additions and can be operated in any position and in close proximity to people and sensitive equipment. Volts: 12, Amps: 75 Amps @ 20 hours: 75 Sealed, no-leak design Heavy-duty, no-corrosion terminals
Northern Industrial Battery Isolator — 120 Amp, Model# B-120A1B2E

Northern Industrial Battery Isolator — 120 Amp, Model# B-120A1B2E

This Northern Industrial battery isolator is a must for dual-battery powered vehicles! The battery isolator allows proper current flow to each battery and maintenance-free deep cycle batteries to be charged properly. Heavy-duty alternator and battery studs. Amps: 120, Application: Dual battery vehicles Allows proper current to each battery Allows maintenance-free deep cycle batteries to be charged properly
NPower Complete 1800 Watt Solar Package — Solar Panels, Batteries and PowerHub — A Northern Exclusive!

NPower Complete 1800 Watt Solar Package — Solar Panels, Batteries and PowerHub — A Northern Exclusive!

NPower provides a complete 1800 Watt solar solution! Now you can put the power of alternative energy to use with this complete solar energy package that includes a pair of 100 Watt solar panels, twin 12V AGM batteries and a Xantrex PowerHub 1800 charger/inverter that lets you convert and store energy and an NPower 30 Amp digital charge controller. This package lets you capture, store and deliver the power you need for a variety of applications, including your home or cabin. Running Watts: 1,800, Amps: 220, Power (Volts): 12, Battery Type: 12V, Battery Qty.: 2, Alternative Power Collection: Yes, Automatic Switch Back: Yes, Hardwired: Yes, Solar Power Compatible: Yes, Dimensions L x W x H (in.): 20 x 14 x 14 Versatile NPower 110 Watt solar panels provide 14.5% module conversion efficiency per each 4.9in. x 4.9in. cell. Aluminum frame, tempered glass with EVA laminate and weatherproof film makes panels suitable for continuous outdoor use. Includes cable and MC4 plug system. Two panels are included in this offer; each panel is 42.5in.L x 31.8in.W x 1.4in.H. 12V, 110Ah UPG AGM (absorbed glass mat) batteries are shock-resistant and maintenance-free, producing higher cranking amps, extremely low (1–3%) self-discharge rate and greater vibration resistance. Non-hazardous, non-spillable battery design requires no water additions and rugged construction withstands harsh conditions. Two batteries included in this offer, providing a 12V, 220Ah system. The Xantrex PowerHub 1800 is an ideal power solution, with advanced technology that lets user harvest energy from multiple power sources and convert it to AC power. Combines an inverter/charger with batteries that can store up to 400Ah of energy. Can be hardwired into a home’s AC power system or devices can plug into 4 AC receptacles on the PowerHub. Automatic transfer switch ensures seamless transfer of your electrical loads to its backup batteries. Modular design allows user to add more battery capacity to extend backup power access for longer periods of time. 20in.L x 14in.W x 14in.H. Charge controller links solar panels together. Stabilizes incoming voltage to prevent 12V batteries from overcharge and discharge. Digital controller reduces overall system maintenance and prolongs battery life. LCD monitor displays charging current and voltage. LED bar graph indicates battery charge level. Handles up to 30 Amps of solar array current or up to 500 Watts solar power. Maintenance free. Once your system is in place, you can expand it further with additional solar panels, wind turbine or portable generator, depending on your needs

The main differences between a car battery and that of a deep cycle battery are basically in the thickness of the lead plates found inside the battery and the charging and discharging cycles of those batteries.  A car battery uses plates that are very thin, and that means the discharge is fast and heavy lasting several seconds.  Recharging a fully discharged car battery takes a real long time.  Furthermore a car battery is not truly designed to make such constant heavy charging and discharging cycles.  This is why all cars have alternators to keep the electrical systems running after the initial start of the engine.

Batteries that are made for solar arrays or commonly known as deep cycle batteries, have much thicker lead plates, are made to give off heavy discharge for several hours, and have the ability to recharge within a few short hours.

This is important since there are but just a few hours in a day in most places that give off enough useful sunlight for effective solar energy.  

Battery banks can be as small as one 12 volt DC battery or can be as large as a room housing many batteries linked together. Deep cycle batteries specifically made for solar array battery banks should be the choice for your solar panel setup.  If however you find getting these deep cycle batteries to be difficult, or the cost to be too much, it is recommended that a golf cart battery be the minimum battery you use for your bank.  If you do take this rout you must buy them in pairs as golf cart batteries are made of 6 volts and you need them to equal 12 volts.  Most batteries made for solar array systems are 12 volt.     

One other issue to consider on charging and discharging cycles.  Batteries should be insulated and be kept at room temperature always.  All batteries can lose up to half of there charge cycle if temperatures make extreme changes.  Additionally, The plastic encasing found on batteries not made for solar arrays are not thick either and can be an explosive hazard.  Keep in mind that a 12 volt battery would be enough to power about 2 household light bulbs for about 10 hours.  This means if you are looking to power all or some part of a building you will need much more then a few batteries.  That also means that you will need a charger capable of recharging all your batteries.  This is a lot of power causing a lot of heat.  Even one battery charge system can be dangerous.  The gases produced by the acid mixing with the lead are flammable and you must be careful to keep sparks and flames away from a battery bank.  The thicker the walls of your battery the better the chances are of avoiding such a hazard.  These are all important differences you must consider between everyday deep cycle batteries and industrially made battery for solar arrays.