| Champion® Sealed Batteries Absorbed Electrolyte in glass mat separators, unlike standard flooded or gel batteries, facilitates oxygen recombination with virtually no loss of liquid, which eliminates regular watering and acid equalization maintenance. Pressure Relief Valves control internal pressure for efficient charging, are self-sealing and have flash arrestors for safe operation. Fully Recyclable Design. |
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24v Battery Pack Price below (Twelve 2v cells with case and cables) -
For 48v Pack double cells in one case double price - 12 v half price. NOTE The prices of third party products such as batteries inverters and solar equipment are subject to change without notice.
800AH Pack $4225 Our Reg $4950 Full Retail-$6600
1000AH Pack $4944 Our Reg $5850 Full Retail-$7800
1500AH Pack $5433 Our Reg $6300 Full Retail-$8400
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If you are considering GRID-TIE with NO BATTERY
There are a wide range of batteries out there and many types and sizes. Some are designed for renewable energy systems and some others can be adapted but some cannot. Ask if they are "DEEP CYCLE" designed for renewable energy systems. Deep cycle just means they are designed to be drawn down 70-80% of their full capacity on a regular basis. Some starter batteries are labeled DEEP CYCLE but are really meant for short burst of energy not for continuous use. Often these are for marine applications. Properly designed deep cycle batteries made for renewable energy systems can be deep cycled up to 1500 times or more. The more you keep them at or near full capacity (FLOAT Voltage) the longer they will last. (up to three times longer, than if they are left at a low charge). Generally, the lead acid kind is a good trade off between capacity, cost and longevity. Sealed batteries sometimes referred to as "Glass Matt" or "Gel" batteries are definitely worry free since no maintenance is needed but they cost more and don't have the same life span as the lead acid. All battery technology is made of hazardous materials and have the same need to be disposed of properly at the end of their life.
You can actually avoid having batteries by connecting directly to the grid (with specially equipped inverters) and temporarily storing the energy in the grid with a "net metering" agreement with your local utility. There are drawbacks in using small generators with larger inverters that may not be very efficient at low power. The key drawback is that when the grid is down so are you. You have no power conditioning ability and no reserve capacity when the power fails, so the turbine must be shut down. Battery free, net metering makes sense in some cottage and rural applications. We are already testing such a battery free system at the FREE Wind Test Centre, with local Ontario utilities such as Hydro One Networks and Guelph Hydro and will be telling you more about it this year. In the meantime: Ask about the battery warranty. How long are they guaranteed? Get a professional to evaluate how much capacity you need and this will ensure you get what you expect, and don't pay for more than you need. Four golf cart batteries may work fine in a grid tie design but are pretty useless if you have regular outages lasting more than a few minutes. Some places like banks, computer service companies and nuclear power plants have UPS systems, (Uninterruptable Power Supplies). They regularly change out their sealed or lead acid battery packs to ensure top performance or for safety reasons. These batteries usually have 80% or better life left and can be acquired cheaply because they can't dispose of them without paying someone. Sometimes this can be a great source of battery power for the budget minded.
Ask for the battery's charge performance specification no matter where you get them. Most deep cycle batteries will have optimum charge voltages similar to others but they are not all the same for each manufacturer. Likely, it's posted on their web site. These are the FLOAT voltage, BULK Charge voltage and ABSORPTION Charge time and the EQUALIZATION Voltage and time. You will need those numbers to be able to set the inverter/charge controller's limit settings and it is usually easiest to get this information at the time you get the batteries. Or get your installer to do it for you. It only needs to be set once generally.
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