# I need a solar charger to charge both AAA and mobile phone

#### leche

Joined Apr 1, 2011
23
Dear friends.I am a beginner about electronic circuits.I just created a few basic circuits successfully.I have a 6V 150 MaH solar cell.Now i want to create a solar charger which can charge both 2 AAA(or AA) NiMH batteries and my mobile phone (nokia 5800).So what can i do to about it?Do you have any circut diagrams to share with me?Thanks.

#### R!f@@

Joined Apr 2, 2009
9,797
than get a 12V 12W solar panel first

#### leche

Joined Apr 1, 2011
23
than get a 12V 12W solar panel first
So, is charging to li-ion batteries easier than charging Nimhs?

#### R!f@@

Joined Apr 2, 2009
9,797
Charging is charging. Topology is different. But the source should be adequate

#### leche

Joined Apr 1, 2011
23
So what kind of batteries i want to charge, i have to buy a 12V solar cell.Is that right?

#### R!f@@

Joined Apr 2, 2009
9,797
I said to get a 12V one as I presume it comes with standard and u said u need to charge a phone. As phone sometimes require 5V, have to see ur one to be sure.
6V might be too low for a panel charging app.

Before everything u need to find ur total load requirements at worst case. Then find a suitable panel and build the DC to DC converters to charge and for the phone

#### leche

Joined Apr 1, 2011
23
I said to get a 12V one as I presume it comes with standard and u said u need to charge a phone. As phone sometimes require 5V, have to see ur one to be sure.
6V might be too low for a panel charging app.

Before everything u need to find ur total load requirements at worst case. Then find a suitable panel and build the DC to DC converters to charge and for the phone
Thanks for replies.I can charge mobile phone and 2 cells bateries different times.On the phone's AC charger was written that output of the charger is : 5V 890MaH.

And i might want to charge 2 cells AAA or AA NimH batteries when the charger doesn't charge the phone.

I mean i don't want to charge the batteries and the phone at same time.So would a 6V 150 Mah cell enough for me?