Solar charger (was Re: News Openmoko Shop Pulster)

[Christian Gagneraud]

Daniel.Li wrote:
> On Mon, 2009-05-04 at 20:32 +0800, Daniel.Li wrote:
>> On Sun, 2009-05-03 at 08:42 +0800, Daniel.Li wrote:
>>> :) Humm... I think I'd better let them to make a bid for small
>>> quantity. :D
> 
> Sorry, I slipped. 
> 
> latest news from factory.
> 
> YL-S01: 26.47 USD
> YL-S02: 20.59 USD
> YL-S03: 10.00 USD

Hi Daniel,

I use to use this kind of solar charger (a YB-E5008) during my last 
holidays (3 weeks in Iceland, by bike), and i can tell you that they 
are not suitable for smartphone. I couldn't keep my Nokia N95/8GB charged.

When they say that you can charge your solar charger with sun light in 
8/12H, it means actually 8/12h exposed under the sun light at its 
zenith, on the equator of the earth!
By experience, i can tell you that you will need _at least_ two sunny 
days to get it charged properly (during which you took care of 
orienting the charger as the sun moves).

You have to be aware of these constraints as well:
- You can't charge your phone while you charge the charger itself
- If the charger is not fully charge (the light is not green), it 
won't charge your phone, _at all_!

As well, i would advice to use a charger which has at least 2 times 
the capacity of your phone (FR has a 3.7V/1200mAh battery).

On the 3 chargers you propose here, and the 3 chargers i've proposed 
earlier, i would be only interested in 2 of them:, the SC019 and the 
SC020, mainly because these are the only ones which has internal 
battery with a capacity >= 3000Ah

Regards,
Chris


> 
> 
> YL-S01
> High solar energy of Single crystal silicon or polycrystalline silicon convert efficiency is over than 16%
> Solar energy board：DC5.0V/300mA
> Built-in rechargeable lithium polymer battery: 2400mAh/3.7V
> Input Voltage:DC5.0V-5.5V
> Input current: 800mA Max.
> Output Voltage: 5.5V,8.4V 
> Output current: 700mA Max.
> Dimension: 138 mm×79mm×25 mm
> Peak power supplied by photocell:1.5 W         
> charging time: about 6hours (by computer)
>                about 8-12hours(by sunlight)
> Running time: about 2hours (discharging in 700mA)
> 
> YL-S02
> High solar energy of Single crystal silicon or polycrystalline silicon convert efficiency is over than 16%
> Solar energy board：DC5.0V/300mA
> Built-in rechargeable lithium polymer battery：1800mAh/3.7V
> Input Voltage：DC5.0V-5.5V
> Input current: 800mA Max.
> Output Voltage:DC5.5V±0.2V(unload)
> Output current: 700mA Max.
> Dimension：138 mm×79mm×25 mm
> Peak power supplied by photocell:1.5 W 
> charging time: about 4.5 hours (by computer)
>                       about 6-10hours(by sunlight)
> Running time: about1.6hours (discharging in 700mA)
> 
> YL-S03
> High solar energy convert efficiency: over than 16% 
> Solar energy board: 5.5V/80mA 
> Dimension: 95×43×11.5mm 
> High capacity build in battery: 1350mAH/3.7V \
> Output voltage: DC 5.5±0.2V
> Input voltage: DC 5.0-5.5V 
> Output current: 700mA max
> Input current: 800mA max 
> Weight: about 55g 
> charging time: about 3.5 hours (by computer)                       
>                about 15-20hours(by sunlight)              
> Running time: about 1.1hours (discharging in max.700mA)
> 
>>