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Solar Charge Controller – Why Do I Need It?

Here’s another guide on solar panel installation.

solarchargecontSolar Charge Controller – how important is this product to your solar power system.

A charge controller or solar charge regulator is basically a voltage and/or current regulator to keep batteries from overcharging. It regulates the voltage and the current coming from the solar panels going to the battery. Most “12 volt” solar panels give out about 16 to 20 volts, so if there is no regulation the batteries will be overcharged and that in turn will damage your battery. Most batteries need around 14 to 14.5 volts to get fully charged.

There are times that solar charge controller are not needed if you have a small maintenance solar power system or solar panels, example are the 1 watt to 5 watts solar panels.   A rough rule is that if the panel puts out about 2 watts or less for each… Continue reading

DIY – 5 watts solar panel

I made this one last September. I had a scrap of polycarbonate sheet left from the 200 watts solar panel I made that I hate to throw away, so I decided to use it, making a one column 5 watts solar panel.

DIY solar panel

Materials used:
36 pcs 52x19mm solar cells
tab wire
scrap polycarbonate sheet
scrap acrylic – for backing
high temp clear spray paint
aluminum tape to seal the sides
junction box

DIY solar panel

I used the high temp clear gloss spray paint for encapsulation. The one I am using says it never fades, and whenever I redo my project i can always untab one or a few cells with no problem at all, unlike if i had used a resin or EVA to encapsulate it which is impossible to make changes on the cells.

I have been using this for my seminar during demo. Can be used to charge a gadgets,… Continue reading

October 28, 2012 – Solar Energy Seminar

Another seminar was conducted last October 28, same venue at the Multipurpose Hall of Tsarina Grand Villas in Gen. Trias, Cavite.

solar energy seminar philippines

Sir Lito Sarmiento (left) and Sir Lemeul Batrina (right)

We’ve made a few changes on the seminar, from this time on framing the project will be included in the hands on, up to the last part, installing the junction box at the back of the frame.

Sir Lito Sarmiento from Las Piñas who just dropped by to take a look attended the seminar, he had another appointment somewhere else but decided to drop by.  Sir Lemuel Batrina from Antipolo reserved for the seminar 1 week before.  The other attendees who reserved for their slots were not able to attend because of conflict of their schedules.

Level 1 – Lecture…

solar energy seminar philippines

Lecture – demo and hands on of wiring (solar system)

solar energy seminar philippines

Level 2 – Hands on…

solar energy seminar philippines

Framing the project…… Continue reading

Solar Powered Wood/Charcoal Stove

Ever wonder how you can save gas on cooking?

Well, we’ve been using this one for more than 2 years now.  Our solar powered wood/charcoal stove.  We’ve been redesigning this for the nth time.. lol.  Trying to make it easier on cleaning.  The stove works perfectly fine using either wood or charcoal, and can cook real fast.  What we are trying to do with the design of the stove is to make it look better and cleaning (removing of ashes) easier.

The stove has a blower that can be adjusted to how high or low you want the fire.  The blower is powered by solar panel during daytime and solar charged deep cycle battery in the evening.

The model is our recent design, and will be changed next week :D.  Pics were taken during a demo at a construction site.

Solar panel used… Continue reading

On on One

We conducted another one on one, this time it was with Eric Chua from Dasma who requested it, as he was not able to attend the last seminar schedule we had.

Venue of one on one is at TGV Gen. Trias, Cavite.  Conducted last Oct 16, 2012.

The lecture went quick as expected since he was the only one being taught and the only one asking questions :D.

The hands on started before lunch.  Before lunch he had to solder 9 solar cells first :D.

Eric has a background in electronics already and is making his own coin slot operated machines for Play Stations and cellphone charging machine, teaching him went smoothly.

solar energy seminar

Testing his finished project before framing, and adding the junction box at the back.

solar energy seminar

Sir Eric Chua with his finished project – 5 watts solar panel framed temporarily and all good to use.  He… Continue reading

Oct 7, 2012 – Solar Energy Seminar

Here are some photos from our last seminar held last October 7, 2012.

Venue is at Tsarina Grand Villas Multipurpose Hall in Gen. Trias Cavite.  Attendees are from Trece Martires Cavite, Quezon City and Bulacan.


Level 1 and level 2 pics.

Solar cells in different sizes and solar panels used for demo

For better understanding of computations there were different solar cell sizes and different finished solar panels shown to attendees.  Solar cell sizes from smallest 52x19mm to 3x6in were passed around, and solar panels from 2 watts, 5 watts (one was a single column DIY the other was the most common design of 5 watts), 10 watts and 20 watts solar panels were used for the demo.

Most of the attendees have knowledge on electronics so the seminar went a bit fast, all questions are answered to their satisfaction, one asked for additional information on bulb… Continue reading

Solar Powered Cellphone Charger

Our 11 year old boy was able to assemble a solar powered cellphone charger, with adult supervision of course.

Materials used:
10 pcs 52x19mm solar cells
tab wire
wire terminal
rectifier diode
4.7 volts rechargeable lead acid flashight battery (disassembled from old flash light)
acrylic sheet for front and back cover

11year old Zechariah Tabbing Solar Cells

We added aluminium tape to cover the sides and back of the acrylic casing so it will  be waterproof.

That the back looks like.  View of wire terminal and the rechargeable battery, and the aluminum tapes :D.  Finished project is 1.4 watts, 5 volts solar panel.

This solar project can be used for fast charging cellphones, IPODs, MP3, MP4, PSP, etc.. and can be brought anywhere too, no more problem of low bat :D.  Very good to be brought for camping, picnics and any outdoor activities.