[Leica] Portable Power Supply

[Bill Pearce]

Exactly what I was thinking, Jim. Most "real" camera batteries are in the 
7-8 volt area, so usb charging is out of the question.

-----Original Message----- 
From: Jim Nichols
Sent: Thursday, May 18, 2017 9:11 PM
To: Leica Users Group
Subject: Re: [Leica] Portable Power Supply

Aram, the problem may be voltage, not size.  I think the SL battery is
8.4 volts, so the supply voltage source would have to be higher, if my
old EE recollections are correct.  The iPhone batteries are only 3.8
volts.  USB charging voltage is 5.0 volts, hence the SL can't charge
from those, but many smaller devices can.

Jim Nichols
Tullahoma, TN USA

On 5/18/2017 8:38 PM, Aram wrote:
> Says it will charge an Iphone battery 10 times.  I am sure that is a
> fairly small battery compared to the SL.  Might only get a few charges
> on a "real" camera battery.  Might not be that useful.  Does anyone know
> what the capacity of the SL battery is compared to an Iphone battery?
>
>
> Aram
>
> Aram Langhans
> (Semi) Retired Science Teacher
> & Unemployed photographer
>
> “The Human Genome Project has proved Darwin more right than Darwin himself 
> would ever have dared dream.” James D. Watson
>
> On 5/18/2017 8:34 AM, Jayanand Govindaraj wrote:
>> Just came across this, in case someone is interested:
>>
>> https://www.indiegogo.com/projects/powerplant-the-ultimate-universal-charger-battery-powerbank#/
>>
>> Cheers
>> Jayanand
>>
>
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>


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