Solar Panel 12v Battery Charger
Solar Panel 12v Battery Charger
Solar Panel 12v Battery Charger information and products are listed below:
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Sunforce 7 Amp Charge Controller $17.41 The Sunforce 60012 7 Amp Charge Controller prevents overcharging of 12-volt batteries. It is intended for use with 12-volt solar panels, and can handle up to 7 amps of array current and up to 100 watts of solar power. The controller is easy to use with a charging light that indicates that your battery is charging, and a green light that indicates a fully charged battery. The 60012 measures 4 x 1 x… |
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Sunforce 50022 5-Watt Solar Battery Trickle Charger $49.95 The Sunforce 50022 5-Watt Solar Battery Trickle Charger gives you another reason to love the sun–it can help keep your vehicle’s battery charged. It provides up to 5-Watts or 350mA of power to prevent the natural voltage drain of batteries over time. It includes both a lighter socket adapter and alligator clips to give you flexible connection options. The Sunforce 5-Watt Solar Trickle Char… |
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Goal Zero 19006 Guide 10 Adventure Kit with 4 Goal Zero AA Batteries $89.75 Charges handheld devices such as cellular phones music players gps units & digital cameras from solar power or from aa/aaa batteries 2 in 1 charging system that powers up aa & aaa rechargeable batteries & harnesses that power via the usb port to charge other devices extremely compact & portable weight: 1 lb includes batteries… |
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UPG UB645 Sealed Lead Acid Batteries $5.00 USED IN UPS BACKUP SYSTEMS SPOTLIGHTS FLASHLIGHTS EXIT LIGHTING & OTHER EQUIPMENT6V4.5 AHUB645UPC : 806593457333Shipping Dimensions : 4.90in X 3.20in X 2.20inEstimated Shipping Weight : 1.65… |
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Powertraveller Startmonkey – Worlds Smallest Jump Starter with Free Soundracer! Always have peace of mind with the clever and reliable Powertraveller Startmonkey. With this amazing charger, you can jump start your car or bike battery (a full charge provides up to 10 starts), or charge your cell phone, laptop, GPS, and more. The device acquires energy via a wall adapter, a car charger or a solar panel (all included). It boasts multiple security features: short-circuit, incorre… |
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The Generator – Solar Powered Laptop Charger $399.00 16 Watt “Generator” Solar Laptop Charger The Voltaic Generator Solar Laptop Charger powers a mobile office. With an integrated 16 Watt solar panel and a 60 Watt hour battery pack, you’ll efficiently power laptops, cell phones, tablets, cameras, and most other hand held electronics. 16 Watts of Solar Power: 1 hour in sun = Up to 45 minutes laptop runtime. Battery: Extends laptop runtime by up to… |
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The Fusion Messenger Bag – Black $99.95 The Fusion® Messenger Bag is a stylish messenger bag with all of the functionality and looks of a well-equipped messenger bag with the addition of a solar charging module. The messenger bag has pockets for your cell phone and PDA as well as a large cavity for a laptop computer. The messenger bag features an extra large cavity for storing folders, paperwork, and books. Side pockets and accessory p… |
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Voltaic OffGrid Solar Backpack 1010 – Orange Panels The OffGrid Solar Backpack is our most versatile bag. The solar pocket is removable and can be attached to other bags or anything else as it charges. Besides charging all your handheld electronics, it has 1,500 cubic inches of storage space, a padded laptop sleeve, integrated phone pouch and plenty of other pockets. Solar Charger Specifications |
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Battery Tender 2-Pin 25 Foot Extension Lead $14.95 Battery Tender 2-Pin 25 Foot Extension Lead 25 ft. Extension Lead for use to extend the length of the chargers reach from input to batteryUse the 25 ft. long lead extension with the Battery Tender Junior, Plus, 4, 5, or 10 Bank unitsNot for use with the 6 Volt Battery Tender Plus or any other Battery Tender product with white disconnect plugs… |
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Equus 3721 Battery and Charging System Monitor $14.88 - Easily plugs into vehicle’s cigarette lighter or power receptacle to monitor battery and charging system voltage- Designed for 12-volt negative ground systems- LCD displays measured voltage with a bar graph to indicate battery charge level- Color-coded LEDs quickly identify battery’s charge status- Head pivots for easy viewing, angle adjustment… |
How To Size a Solar Charge Controller
Sizing Common Solar Charge Controllers
All Renewable Energy (RE) systems with batteries should include a Charge Controller. In this article we’ll principally be referring to Solar Charge controllers . Charge controllers prevent battery overcharging and also prevent the batteries from sending their charge back through the system to the charging source (i.e., the Solar Panels). Think of a solar charge controller as a battery nurse—its job is to monitor the battery bank, feeding it what it needs and checking its vital signs. Since a Solar Controller does its work in line between the solar panel array and the batteries, it would make sense that its selection and sizing would be influenced by those components. And that’s exactly the case.
Voltage and amperage (or current) are the parameters we use in solar charge controller sizing. The solar controller must be capable of accepting the voltage and current produced by the DC source (usually Solar Panels) and delivering the proper voltage and current to the batteries. This situation might make you think that the DC source, charge controller and batteries must all share a common voltage. While that is one system design strategy used in many installations, it’s not the only one. More on the alternatives in another article. For now, it’s one voltage for everyone!
Technically speaking, the DC source must always have a higher operating voltage than the battery bank in order for current to flow from one to the other. A handy way to remember this fact is the statement, “curent flows downhill.” For the purpose of this discussion, we’ll use nominal voltage which means common battery voltages. Nominal voltage in this sense is synonymous with battery voltage. Since batteries (where they are used) are in many ways the heart of an RE system, we can call the bank’s voltage the system voltage. The system voltage selected for any given installation is usually, though not always, determined by the battery bank required by the application; the inverter, if one is used, will also influence the choice of system voltage.
Sizing comes down to this: there’s the quick method, which will very likely give an acceptable, if perhaps oversized result, but won’t describe the why here - we’ll just show you the steps.
Short Method for Sizing Solar Charge Controllers
- For PWM and PWM shunt solar controllers, select one that is rated at your system voltage (same nominal voltage all the way through the system).
- Divide solar panel array total wattage by system voltage.
- Add 20% as a safety margin (i.e., (result of Step 2) X 1.2).
- Select a Solar Controller rated at or above the result of Step 3.
Example of the Short Method
- Two 125W, 12V nominal modules. System is 250 W, 12 Volt nominal. Solar charge controller will be 12 Volts.
- 250 ÷ 12 = 20.83
- 20.83 * 1.2 = 24.996 amps
- You could use a Xantrex C35, a 35 Amp Solar charge controller; or a Morningstar Prostar 30, a 30 amp solar charge controller , for example. Any 12 Volt Solar controller greater than 25 amps will work.
About the Author
Co-written by Ben Gorman and Sascha Deri.
Founded in 1999, altE, Inc has catered to DIY customers on every continent of the globe. A 2006 Inc. 500 awarded company, altE aims to continue to fulfill its motto, “Making Renewable Do-able,” by offering cost competitive, high-quality solar and wind energy related products and educational services to a broad spectrum of the public. For more information visit their website at www.altEstore.com or contact Toll Free (877) 878-4060.
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