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[OM] Re: TSA: Safe Travel with Batteries and Devices

Subject: [OM] Re: TSA: Safe Travel with Batteries and Devices
From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>
Date: Tue, 01 Jan 2008 11:55:48 -0500
I also meant to mention that when you buy a Quantum Turbo "CZ" power 
cable for Canyon flash units it comes with a power saver dummy AA 
battery.  Apparently the control electronics of the flash must be able 
to run on about 3 volts so the 4th battery is not really required when 
running with a high voltage supply.  Perhaps the same is true of other 
flash units but the best is the T-32 and some Sunpaks which don't need 
any AA's when running on high voltage.  It helps same some weight but I 
leave all the batteries in anyway just in case the high voltage supply 
fails at an inopportune time.

Chuck Norcutt

Chuck Norcutt wrote:
> For some reason I thought there was at least one Metz flash that could 
> accept either 4 alkaline AA's or 5 NiCad or NiMH such that the flash 
> always saw 6 volts.  But if it exists I couldn't find it.  Some of the 
> bigger Metz and Sunpak units take 6 AA's which I think is just for 
> additional capacity.
> 
> Chuck Norcutt
> 
> Garth Wood wrote:
>> Larry wrote:
>>> Tim Hughes wrote:
>>>> "Is there a marketed size that will just fit into the CT60 pack" Not 
>>>> exactly,
>>>>
>>>> To get the fast charge you need a different high power charger
>>> I noticed that someone in the battery industry thinking logically 
>>> would make an AA sized cell of this type with just enough electrolyte 
>>> to be sure they are at least 1.5 Volts...
>>
>>
>> If it's the wrong chemistry, no amount of electrolyte in the cell will 
>> give you 1.5 volts -- it'll just give you a bigger capacity (more amps).
>>
>> Alkalines are 1.5 volts because that's what their chemistry produces. 
>> NiMH are 1.2 because that's what *their* chemistry produces.
>>
>> If manufacturers of electronic devices were smart, they'd re-engineer 
>> their devices so that 4 x 1.2 volts (or whatever number of cells they 
>> require in the device's battery compartments) would produce the 
>> necessary voltage to properly run their devices -- then you wouldn't 
>> need alkalines.  Radio Shack, a long LONG time ago, used to sell a 
>> 5-watt walkie-talkie that had a battery compartment that could take 8 
>> alkaline AAs (for twelve volts) or *ten* rechargeable AAs (to still 
>> give twelve volts).  One of the more elegant solutions for this type 
>> of problem.
>>
>>
>> Garth
>>
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> 

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