i'm having a project. the theme is that, it can be used in emergencies, blackouts and disasters.

the battery(ies) can be charged through AC, SOLAR, and MECH.. this project will have power outlets that can be used to charge cellphones. (220vac outlets)

my 1st problem..
what type of battery do i need? (i think lead acid but not sure)6V,12?

2nd is.
i dont know what solar panel fits here, how many watts? volts? charging time to charge the battery above..? faster the better..

these are my problems that i must solve before starting right? and i cant start because i think these problems are important.

please enlighten me masters! thank you!
you can direct me to other post related to my problem. thanks again!.

 

You have to do a power analysis. What are you planning on powering?
How much current and voltage do your devices require?
Are they all 220VAC devices or are some low voltage DC?

 

OMG! thanks for a quick reply MrChips.
i just want to charge cellphones,nokia chargers(i believe 220vac input 5v output), superbright leds(for emergency lights), probably an fm radio.

 

That's a start anyway.
Now make a list of every device you plan on running.
Look at every charger, device etc. and write down the voltage and current or wattage listed on the device.
Also tell us how long you hope to run that device during power outage.

For example:

FM Radio, 4 AA batteries, 200mA, 2 hours
Super bright LED, 8V, 10W, 4 hours
Nokia charger, 220VAC to 5VDC, 8 hours

 

hmm. thanks! anyway,
++LEDs and Radio(maybe directly connected to the source?) are built-in in the project - they could be used anytime during "disasters" or "calamities"
++the common cellphone chargers are:
INPUT: AC100-240V 50/60Hz 0.2A
OUTPUT: DC5.0V----400mA,
in my experience, it takes 2 hrs to make my phone fully charged.

i've seen a battery in a shop. its 6V 1800mAh leadacid. is it enough? for long usage? please enlighten me with the computations master.
Thanks in advanced!