Solar charger (was Re: News Openmoko Shop Pulster)

[Daniel.Li]

On Mon, 2009-05-04 at 16:35 +0100, Christian Gagneraud wrote:
> > latest news from factory.
> > 
> > YL-S01: 26.47 USD 2400mAh/3.7V
> > YL-S02: 20.59 USD 1800mAh/3.7V
> > YL-S03: 10.00 USD 1350mAH/3.7V
> 
> 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).

Thanks for you info. And it's very useful. I found that YB-E5008 has
only 3.6V/1100mAH. 
http://y-toshenzhentech.itm.com.cn/532951/solar-charge-yb-e5008-for-mobile-phone-mp34.htm

Well, I have to re-check it with factory before I buy one :)
> 
> You have to be aware of these constraints as well:
> - You can't charge your phone while you charge the charger itself

YL-S** series can charge your phone when the charger is charged with
solar energy board :)

> - If the charger is not fully charge (the light is not green), it 
> won't charge your phone, _at all_!

Humm, I have checked with factory. LED of YL-S** series only indicates
how much battery is left. And even it shows red, it can still charge the
FR.

70%-100%	Green
30%-70%		Orange
0%-30%		red

Of course, I think we had better to test it. And I think you are right
the higher capacity the better :)

> 
> 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

Yeah, I have checked with them again. They have larger capacity
3.0/3.5/4.0Ah

But the price is a little bit higher. :)
> 
> Regards,
> Chris
> 
-- 
Daniel.Li <lida_mail at 163.com>
PALFocus (http://palfocus.oicp.net)