Solar Backup for HP Mini
Intro: Solar Backup for HP Mini
STEP 1: Get Your Stuff Together
1 set solar Christmas lights (a solar garden light will work too)
Wire
Shrink Tube
Battery Holder(s) equal to 6 AA size
Project Box
Switch
Multi Meter
Male adapter (Size of laptop power input)
Male adapter (your choice)
Female adapter (matching your choice male)
Hot Glue!!!
STEP 2: Open Your Solar Panel
STEP 3: Battery Box
Remove the lid to your battery box and glue the battery holder to the lid. I used "Monkey Glue" and then hot glued it to make things go a little quicker. Who has 24 hours to wait for "monkey glue" to set. Cut yor holes for cords, switches, etc.. Pay close attention to your + and - with the female adapter and connect it to the battery cords. My battery packs came with a concealed - wire on the bottom do a check for it if you miss it you risk frying yourself and your batteries. Add a 6" + wire and a 6"- wire to your battery pack. Hot glue the bateries in place, now your lid is done.
14 Comments
astral_mage 10 years ago
Dsk001 14 years ago
cocodlicious 14 years ago
Dr.Bill 12 years ago
I don't see how you can plug it into the 19+volt power plug on your laptop and get it to work.
Mus Be Magic~
ironsmiter 14 years ago
my acer aspireOne takes 19Volt input @2A.
That would give between 10 min, and 1/2 hour.
Better(aka bigger capacity) batteries, MORE batteries, lower power netbook, etc...will all increase the useful run-time you can get.
Not so much useful as-is, but a pretty good proof of concept.
At least for laptops. This would work really well for a cellphone, mp3 player, pda, or such. Even a portable dvd player(my portable takes a miserly 9Volt, at less than 1A).
cocodlicious 14 years ago
agent harmsy 13 years ago
ironsmiter 13 years ago
It is 6 batteries in series, for an AVERAGE of 21Volt(25v high to 18v low).
The internal charging circuitry of your laptop is designed to handle a healthy range of voltages. Some makes and models more than others.
For instance, I have an old IBM pent2 laptop that can easily handle from 15V through 24V input. My fathers modern IBM can only handle 18V to 20V.
police098 12 years ago
police098 12 years ago
ironsmiter 12 years ago
All THAT will do is reduce your available power.
you COULD change the battery chemistry.
but then you'd need to change the charging circuit also.
16 AA NiMH cells would get you RIGHT AT 19.2 volt when fully charged(close enough for ANY general power circuit).
You would need a new charging circuit between the batteries and solar cells, and you're going to be charging for DAYS, if not longer. The up side would be a much improved run time(2600mAh@19.2V vs 600mAh@21.6V using the cells I have in my spares box) and slightly increased safety(LiFePO4 cells are pretty darn safe, as far as li-ion goes). Downsides include the afore mentioned long charge times, vastly increased size and weight,
police098 12 years ago
police098 12 years ago
pirateaboard 14 years ago