• After 15+ years, we've made a big change: Android Forums is now Early Bird Club. Learn more here.

Picking the right charger?

isrhammer

isrhammer

Member
Dear Androids,

I using my SGS 1 alot and specially when i'm out, I would like to buy a solar charger but not sure how to fit it to my phone.

My phone battery has 1500 mAh and i'm not sure if it matters which charger i choose (there are diffrent mAh on every charger).

Do I need to fit the mAh to my battery specifications or can I use which ever charger I want?

How does it goes?

thx
 
I recommend a battery power pack like Anker 5600mAh.
It'd charge your phone's 1500mAh battery about three times.

I don't recommend solar chargers with a build-in battery, better a power pack and a separate solar panel ... about the reason see below ... :)
Charging the phone with such a solar charger is not the problem :)

But charging the the build-in battery of the solar charger by using the sunshine, that is a problem ;)
It works, but, with a reasonably build-in battery, its panel needs about three sunny days to charge its build-in battery.

The reason for this delay is a general design error of this kind of solar chargers with build-in batteries.
The panel needs the sun, but the in-build Li-Ion battery hates the heat of the sun.

A Li-Ion battery to charge above temperatures of +45C (+113F) will be dangerous, so the charging circuit will shut off the charging when the battery reaches this temperature.
So there will be delays, because when the sun is the brightest the charging of the solar charger will be shut off :(

Far better are solar panels without a build-in battery. They can charge the phone directly or can charge a separate mobile charger's build-in battery for later use.

For such a "stand-alone" solar panel one should choose high quality.
Cheap panels won't become a joyfully toy ;)
Harry
 
In order for a charger not to damage a li-ion battery, it needs to have a charge rating of 0.3-1.5C of the phone's mah. Basically, it needs to have an mah output that's 0.3-1.5x the mah capacity of a phone.
 
Harry2 said:
I recommend a battery power pack like Anker 5600mAh.
It'd charge your phone's 1500mAh battery about three times.

I don't recommend solar chargers with a build-in battery, better a power pack and a separate solar panel ... about the reason see below ... :)
Charging the phone with such a solar charger is not the problem :)

But charging the the build-in battery of the solar charger by using the sunshine, that is a problem ;)
It works, but, with a reasonably build-in battery, its panel needs about three sunny days to charge its build-in battery.

The reason for this delay is a general design error of this kind of solar chargers with build-in batteries.
The panel needs the sun, but the in-build Li-Ion battery hates the heat of the sun.

A Li-Ion battery to charge above temperatures of +45C (+113F) will be dangerous, so the charging circuit will shut off the charging when the battery reaches this temperature.
So there will be delays, because when the sun is the brightest the charging of the solar charger will be shut off :(

Far better are solar panels without a build-in battery. They can charge the phone directly or can charge a separate mobile charger's build-in battery for later use.

For such a "stand-alone" solar panel one should choose high quality.
Cheap panels won't become a joyfully toy ;)
Harry
Click to expand...

I am talking about a solar charger only! without a built in battery. thx

chanchan05 said:
In order for a charger not to damage a li-ion battery, it needs to have a charge rating of 0.3-1.5C of the phone's mah. Basically, it needs to have an mah output that's 0.3-1.5x the mah capacity of a phone.
Click to expand...

Great answer, i'll use that calculation. Thank you very much mate.

Harry2 said:
Slip of the pen (or finger :) ): "mA output" would be right.

Harry
Click to expand...

Nice sharpening :) thx
 
You must log in or register to reply here.
Back
Top Bottom