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[OM] Re: 2SP battery drain

Subject: [OM] Re: 2SP battery drain
From: "Piers Hemy" <piers@xxxxxxxx>
Date: Mon, 20 Dec 2004 17:58:36 -0000
Of course, I realised. But too  late, as always.

--
Piers 
 
-----Original Message-----
From: olympus-owner@xxxxxxxxxx [mailto:olympus-owner@xxxxxxxxxx] On Behalf
Of john@xxxxxxxxxxxxxxxx
Sent: 20 December 2004 17:54
To: olympus@xxxxxxxxxx
Subject: [OM] Re: 2SP battery drain

On Mon, 20 Dec 2004 17:42:34 -0000, "Piers Hemy" <piers@xxxxxxxx>
wrote:

>
>But since voltage is the same for each cell, mAh can be substituted for Wh.
>Can't it? 

Only if they're in parallel. In the camera, they're in series to give a
nominal 3V and a current-time capacity of 150mAh, so the combination has an
energy capacity of 450mWh. (If they were in parallel, we'd have 1.5V at
300mAh, still giving 450mWh as you say, but the camera wouldn't work!).

In other words as an example, if the camera draws 15mA continuously it would
last for 10 hours.


John Gruffydd (Mold, Wales, UK)
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