4. The Concorde PVX-1080T lead-acid battery is intended for solar power applicat
ID: 2081731 • Letter: 4
Question
4.
The Concorde PVX-1080T lead-acid battery is intended for solar power applications. The manufacturer’s website lists the following data for this battery:
Voltage: 12 V
Weight: 70 lbs
Nominal capacity (Ampere-hours) at 25C, for discharge to
1.75 volts per cell:
How many cells does this battery contain?
What current will discharge this battery at C/10?
These batteries can be purchased for $270 each. Assume that the manufacturer guarantee that the battery will have a life of 2000 cycles for a maximum of 27% depth of discharge. If the battery is discharged at a uniform rate every night from 7:00 pm to 10:00 pm to a 27% depth of discharge and assuming that the average battery voltage during discharge is 12.5V, calculate the discharge current, the total output energy per discharge cycle in kWh and the battery capital cost per kWh.
1 hr rate 2 hr rate 4 hr rate 8 hr rate 24 hr 48 hr 72 hr 120 hr rate rate rate rate 68 Ah 86 Ah 88 Ah 97 Ah 108 Ah 118 Ah 122 Ah 126 AhExplanation / Answer
VRLA-AGM Deep Cycle Battery for Off Grid and Grid Tied Systems
Concorde’s advanced AGM designs out-perform flooded (wet), gel and other AGM brands – And here’s why:
Sun Xtender’s AGM design is the original Absorbent Glass Mat battery technology adopted by the armed forces worldwide.
VRLA - Valve Regulated Lead Acid construction.
Maintenance Free – Never requires water replenishment – ever.
Non-spillable - can be used upright, on its end or side.
Deep Cycle – Unique high density plate technology provides superior reliability, power & extended life cycle.
Pure Lead-Calcium Grids –Thicker plates than the industry standard for longer life and power.
Proprietary PolyGuard Microporous Polyethylene Separators are used around the positive plate & AGM to prevent shorting from shock and vibration. Sun Xtender is the only manufacturer providing this added layer of protection.
Low impedance design facilitates excellent charge acceptance.
No current limit with controlled voltage charging. Recharge is quick and complete in a minimum of time.
Shockproof copolymer polypropylene high impact reinforced case restrains from bulging.
Copper Alloy Terminals are corrosion free and allow for maximum conductivity.
Sun Xtender AGM designs produce higher rates of discharge over flooded & gel designs.
Sun Xtender products are fully charged at the factory, ready to install upon delivery and transport Hazmat Exempt via land, air or sea.
PVX-1080T is used for applications such as Street & Bus Stop Lighting, Cathodic Protection, Grid Tied & Off Grid Homes, 2-Way Radio Repeaters, SCADA, Navigational Aids, Medical Refrigeration Clinics & Power for Remote Areas / Developing Nations.
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