solar charger circuits for mobile phones

k01

Honorable
Oct 18, 2012
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0
10,520
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how about just taking a NORMAL battery pack? I mean i have this http://www.amazon.co.uk/RAVPower-10400mAh-External-Thunderbolt-Incredible/dp/B009V5X1CE/ref=sr_1_2?ie=UTF8&qid=1385990084&sr=8-2&keywords=ravpower

it has 1 and 2 amp ports for fast charging works with everything that need usb and has the actual amount of mAh indicated ( i get 4-5 charges out of it for my nexus 4). it takes quite a bit of time to charge itself ( ~8.5 hours with 1.2amp wall charger) but the phone charges really quick and i think this thing is well worth it's price.

personally i think the whole solar power charger idea is kind of a gimmick and not yet developed enough. like the random bot/guy in the post above says, his advertised pack has 1300mah pack inside. THAT'S HALF OF A HIGH-er END SMART PHONE and it takes ~16 hours to charge that miniscule amount? I'll pass.
(
 

k01

Honorable
Oct 18, 2012
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you need a solar panel that has 5v, you risk of killing your phone if you charge with 6v instead of 5v. as for the amp i don't think there's a difference. i'm charging my phone with 2 amp charger instead of 1.2 amps that it came with and it's well alive.
 

ipwn3r456

Honorable
Mar 21, 2012
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k01's right. You DO NOT want to find any charger that is over 5v. It will kill your phone. For the amperage, it will be fine even if you have a higher amerage charger, it will be charged the maximum the device can handle.
 

firecureve

Honorable
Nov 15, 2013
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Solar powered battery charger for cellphones! With small size, unique style and great portability, this solar charger has enjoyed great popularity .It has a high Conversion rate over 16%, which means it can transform the sunlight to the electricity very quickly. The 1300mAh built-in battery enables various digital products. It takes about 14 to 18 hours to charge the built-in battery full via sunshine, while 3 hours via computer or adapter. However it just takes 90 minutes to charge the phone full by this charger.
 

k01

Honorable
Oct 18, 2012
9
0
10,520
1
how about just taking a NORMAL battery pack? I mean i have this http://www.amazon.co.uk/RAVPower-10400mAh-External-Thunderbolt-Incredible/dp/B009V5X1CE/ref=sr_1_2?ie=UTF8&qid=1385990084&sr=8-2&keywords=ravpower

it has 1 and 2 amp ports for fast charging works with everything that need usb and has the actual amount of mAh indicated ( i get 4-5 charges out of it for my nexus 4). it takes quite a bit of time to charge itself ( ~8.5 hours with 1.2amp wall charger) but the phone charges really quick and i think this thing is well worth it's price.

personally i think the whole solar power charger idea is kind of a gimmick and not yet developed enough. like the random bot/guy in the post above says, his advertised pack has 1300mah pack inside. THAT'S HALF OF A HIGH-er END SMART PHONE and it takes ~16 hours to charge that miniscule amount? I'll pass.
(
 

mehtaharsh92

Estimable
Feb 18, 2015
1
0
4,510
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Hi Nourelkattan. I want to charge my 5V 1A Device through a 6V 4.5Ah battery and I have also designed circuit for the same but not happy with its performance. Have you tried this same thing?
 
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