Sunday, December 25, 2011

JD Powers Ratings - How Good Are They?

!±8± JD Powers Ratings - How Good Are They?

I've always heard about JD Powers' coveted award. They review products and services and rate them on a variety of factors. When a product wins the award, they often let customers know via their advertising.

But how accurate is this information? Well, in some respects it's very good. In others, it's missing something.

They compile their information solely from customer surveys. As long as they have a large enough sample this is good information, but in some cases it's incomplete. For example, customers may be very pleased with a certain car, but JD Powers doesn't include crash test ratings. I would certainly want to know that about a car before I bought it. What about insurance? They have ratings on everything from cost to claims, so they must have surveyed some customers who had claims. I would also love to see the policies reviewed by an expert who could compare coverage. I'm sure their process for sending out surveys and collecting data is audited by a third party, just like financial statements are. As long as you know how they get their information, that's fine. You probably still have some research to do before you buy.

Here's one problem that concerns me, though. Companies have to pay JD Powers to have their product reviewed. If they win an award, they have to pay again to use their name in their advertising. This doesn't mean that the ratings are suspect. They have a reputation to protect, and I'm pretty sure that there survey methods are very good and well documented.  The money issue does present a few problems, though.

Not all products or services in a category will be reviewed. I saw a category with less than ten companies reviewed. That's only a small fraction of the companies that make this particular product. And what about companies that participate, but routinely end up at the bottom of the ratings? Why would they pay money to participate again?

Of course any company would have to make money somehow to pay for all the work involved in conducting the surveys. They don't sell a magazine like Consumer Reports.

Maybe they should have memberships, like the Better Business Bureau does. Companies would pay a fee to be audited for certain minimum requirements. If they don't meet these requirements, they can't become members. They could use this designation in their advertising so that customers know that JD Powers has verified that they've met these requirements. Then they could take the money from memberships and use it to survey customers of all products and services in a category, not just those that are members. This would be more beneficial to the companies who rate the highest because customers could see how they stack up against all of their competitors.


JD Powers Ratings - How Good Are They?

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Wednesday, December 21, 2011

Starter Home solar ability system

This is a video of my starter project on Solar Power Systems. My setup includes 4x 100watt Panels, 4x AGM 12v100Ah Batteries, 1KVA Pure sinewave Inverter and 12v/24v 40a PWM Solar Charge Controller. My panels are tilted 24 degrees facing true south.

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Saturday, December 17, 2011

PowerFilm F15-600 10w Folding Solar Panel Charger

!±8± PowerFilm F15-600 10w Folding Solar Panel Charger

Brand : PowerFilm | Rate : | Price : $232.99
Post Date : Dec 17, 2011 15:57:44 | N/A


PowerFilm F15-600Ultra lightweight, ultra compact, and ultra portable.The Powerfilm 10 Watt Foldable Solar Charger (F15 - 600), fits easily into any backpack or laptop bag. It weighs only 9 0z. and can be used in a variety of applications by producing 0.6 Amps at 15.4 Volts.The F15-600 Foldable Solar Charger is the next step up in portable power and charging needs, producing more power and opening up additional applications. Utilization of the included 12 V Female Barrel accessory makes using the F15-600 Foldable Solar Charger extremely easy and convenient to use. Essentially replacing a vehicle's battery for powering small- to medium-sized devices such as portable fans or electric inverters, the F15-600 is a perfect addition to outdoor supplies when a little more power is desired.Folded Weight: .56 lbsOperating Voltage: 15.4Operating Current: .6Folded Dimensions: 10.3 x 3.5 x 1.4Unfolded Dimensions: 20.5 x 23Output Cord & connectorsAll PowerFilm authorized accessories include marine-grade components with connectors that match the PowerFilm Series output cord.

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Tuesday, December 13, 2011

TravelSol Briefcase Style Solar Battery Charger - 12V/13W

!±8±TravelSol Briefcase Style Solar Battery Charger - 12V/13W

Brand : Silicon Solar
Rate :
Price :
Post Date : Dec 13, 2011 10:51:05
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This powerful solar charger is ideal for charging a 12v battery. It is perfect for use on caravans, boats, GPS Systems and laptop computers. The Briefcase Solar Generator is very versatile and portable. When not in use it folds up into a rugged carrying case, and the power connections are completely detachable for increased safety when in storage.

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Wednesday, December 7, 2011

Do you accept a (stalled? inefficient?) micro-hydro or solar/wind project?

Do you have a (stalled? inefficient?) micro-hydro or solar/wind project? A North Vancouver, BC company has an innovative (the world's only) solar-wind-micro hydro battery charge controller that: - Five discrete input channels; eliminates the need for a terminal block for multiple panels, or a mixed input(s) of solar panels, wind turbine(s), and/or micro-hydro - 1200 watts maximum capabiity, 12V constant-voltage regulated output - voltage optimizing to 12Vdc output, boosting voltage or reducing voltage, as necessary, with input(s) between 5V and 30V; this has been estimated to increase total power by 35% (better than MPPT tracking.) - preventing any partially-shaded solar panel from degrading the solar array's output without the need for a blocking diode at every panel (only the very newest panels have built-in blocking diodes); this could increase a solar array's efficiency by an estimated 55% if you have tall trees surrounding your solar panel array. - comes with Do-It-Yourself instructions for you to build (populate) a cost-free battery bank using "dead" or "ususable" batteries, as shown on CBC Newsworld, Ming Pao magazine, Global TV, and Burnaby News Leader. You won't have to buy new batteries for your battery bank -- you can get any number of unusable car/marine/wheelchair 12V batteries and rejuvenate them, for use, in your battery bank. - uniquely programmed to charge your batteries so that the batteries will last 5-10 years, even though they were already "unusable ...

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Sunday, December 4, 2011

Solar Car Battery Charger DIY

!±8± Solar Car Battery Charger DIY

Solar car battery chargers are wise investments in terms of extending your vehicle's battery life. It provides free flowing current to your battery which maintains its charge although you rarely use your vehicle especially during the winter season.

A lot of people have resorted to solar-powered car battery chargers to give their batteries better mileage. With these chargers, you can sit back and relax knowing that your car will always start even with minimal use. However, many have been apprehensive about using solar chargers for car batteries as they seem to be a complex equipment. So here are some do-it-yourself projects to charge your lead-acid car battery with solar panels.

This is probably the simplest way:

You will need are a voltmeter and a solar panel. Simply connect the solar panel to your battery and monitor the ascending voltage. You have to keep it close and watch it carefully. When the voltmeter gets near 14 volts, that simply means that your battery is charged. You can now disconnect the solar panel from your battery to keep it from overcharging.

Be careful though, you can damage your battery if you charge it too fast. If this is the case, you need to get a panel that is just right your battery. You can always consult with your battery manufacturer to see how many amperes it can handle during the charging and discharging process. If you happen to have a very big panel and little battery, you need to tweak a little to get the right amps for your battery.

If this sounds more complex and tedious, you can just browse online or visit your nearest automotive store to get the newest solar chargers for car batteries. These have solar panels that are manufactured exclusively for the purpose of maintaining your vehicle's battery that have not been used in a very long time. These panels do not go over 13.5 or 14 volts so you can be assured that they will not produce too much current to damage your battery.

If you're the forgetful type, solar automobile battery chargers are perfect for you. You can just hook the solar battery chargers to your battery via the cigarette power socket and forget about it. If you hate winter seasons as they make your vehicles stall and hard to start, do yourself a favor and purchase a solar car battery charger. They are wise investments, that's a fact.


Solar Car Battery Charger DIY

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Wednesday, November 30, 2011

Coleman 50005 5-Watt Solar Powered Trickle Charger

!±8± Coleman 50005 5-Watt Solar Powered Trickle Charger

Brand : Coleman | Rate : | Price :
Post Date : Nov 30, 2011 23:16:05 | N/A


  • 5 watts rated power at 15 volts operating voltage
  • Constatnt maintenance charging for larger batteries
  • Built-in reverse current protection; can't discharge your battery
  • weatherproof
  • Contains handy battery clamps and mounting screws

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Sunday, November 27, 2011

Solar Battery Charger Kit for 12V. RV Marine or Home. Flexible Solar Panel aminate, Charge Controller, PV Combiner box w/breaker & extension Cable

!±8± Solar Battery Charger Kit for 12V. RV Marine or Home. Flexible Solar Panel aminate, Charge Controller, PV Combiner box w/breaker & extension Cable

Brand : SoldonSUN | Rate : | Price : $499.00
Post Date : Nov 27, 2011 23:00:33 | Usually ships in 3-4 business days


68 watt Complete package includes 68 watt Flexible Solar Panel, Baby box with circuit breaker, 6.5 Amp Charge Controller and 30' MC Cable. UniSolar flexible solar panel. simple & easy peel and stick installation. Ideal for metal roof. RV /Boat, Home & Commercial applications. Battery charging or Grid tie Solar Systems. UniSolar is one of the largest manufacturer of Flexible Thin Film Solar Panels. Plug and Play.

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Friday, November 25, 2011

Cobra CPI 1575 1500 Watt 12 Volt DC to 120 Volt AC Power Inverter

!±8± Cobra CPI 1575 1500 Watt 12 Volt DC to 120 Volt AC Power Inverter

Brand : Cobra | Rate : | Price : $96.95
Post Date : Nov 25, 2011 05:09:25 | Usually ships in 24 hours


  • 1500 Watts Continuous Power, 3000 Watts Peak Power
  • Three grounded AC receptacles and 5-Volt USB output
  • LED function/status meter
  • Remote on/off capable for easy control when installed out of reach
  • Two-year limited warranty

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Cobra CPI 1575 1500 Watt 12 Volt DC to 120 Volt AC Power Inverter

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Tuesday, November 22, 2011

Simple solar ability system

The solar acquisition system designed for our senior design project. Uses a 12W solar panel and a 30V 10A charge controller. 12V 7Ah SLA battery with a 320W 115V continuous DC to AC power inverter powering an AC load, the laptop in this case (roughly 65W).

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Sunday, November 20, 2011

GEAR TEAM analysis of the OffGrid Solar Charger BackPack

GEAR TEAM review of the OffGrid Solar Charger BackPack as found at www.gridearth.org (Grid Earth). This backpack is top quality rigid gear. Double-stitching will never let you down. 3 healthy-size compartments for holding your stuff. Soft pocket on top for valuables. High impact solar panels that charge a magical USB battery cell inside. Charges my iPhone in 45 minutes easily with charge left over. Has several adapters for other phones and 12v gadgets. Easily, a great purchase for a solar charging hiking buff.

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Monday, November 14, 2011

New Goal 0 ELITE Nomad 7M Solar Panel Ultra-Compact Power Compatible With Most USB Devices

!±8±New Goal 0 ELITE Nomad 7M Solar Panel Ultra-Compact Power Compatible With Most USB Devices

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Rate :
Price :
Post Date : Nov 15, 2011 00:00:24
Usually ships in 1-2 business days



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