A720IS note - I'v been trying to solve external AC power supply ,already had some 18650 li-ion cells in pairs (4800mAh) with 4.15V fully charrged. Using it for timelapses and so , for year or so, no problem so far. It can take around 10 000 !! shots with monitor turned off.
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A720IS note - I'v been trying to solve external AC power supply ,already had some 18650 li-ion cells in pairs (4800mAh) with 4.15V fully charrged. Using it for timelapses and so , for year or so, no problem so far. It can take around 10 000 !! shots with monitor turned off.
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Edit:Hi, [http://forum.chdk-treff.de/viewtopic.php?f=20&t=2836 here] how to build an external Akku with 18650 for Canon (german). And it takes 10'000s of shot's with monitor turned on!
Edit:Hi, [http://forum.chdk-treff.de/viewtopic.php?f=20&t=2836 here] how to build an external Akku with 18650 for Canon (german). And it takes 10'000s of shot's with monitor turned on!
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For example: A monitoring application has the LCD on all the time, and is wired to a 1400mAH battery pack. Sitting in the half-press mode for almost all the time, this means the battery will last roughly 1400mAH/450mA = 3.1 hours. The same camera attached to a 12V SLA with 40AH capacity will last for roughly 40/.45 = 88.8 hours or 3.7 days. (Note that this ignores losses in the battery discharge and gains from voltage conversions.)
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For example: A monitoring application has the LCD on all the time, and is wired to a 1400mAH battery pack. Sitting in the half-press mode for almost all the time, this means the battery will last roughly 1400mAH/450mA = 3.1 hours. The same camera attached to a 12V SLA with 40AH capacity will last for roughly 40/.45 = 88.8 hours or 3.7 days. (Note that this ignores losses in the battery discharge and gains from voltage conversions.)
[[Category:Hardware]]
[[Category:Hardware]]
Latest revision as of 07:04, September 17, 2012
Most of the Canon cameras can be used on an external power supply.
The aim of this page is to help those who want to use a non-Canon PSU or an external battery power supply to run their cameras. This is essential for very long exposures, and for scripts that run continuously, monitoring a scene, for example, in a security camera or wildlife setting.
Please could people add in the pin polarity and voltages that their model of camera can run on.
Camera model
Pin polarity
Stated voltage
Peak current
Waiting
Half press
Full press
Zooming
Playback
Monitor on
Monitor off
Monitor on
Monitor off
Monitor on
Monitor off
Monitor on
Monitor off
A560
Outer pin -ve
3.15V
720mA
360
70
450
340
500
530
210
150
A590
Outer pin -ve
3.15V
A720IS
Outer pin -ve
2.95-3.15V
(4.2V tested - see note bellow)
920mA
350
85
450
350
500
400
450
190
160
A720IS note - I'v been trying to solve external AC power supply ,already had some 18650 li-ion cells in pairs (4800mAh) with 4.15V fully charrged. Using it for timelapses and so , for year or so, no problem so far. It can take around 10 000 !! shots with monitor turned off.
Edit:Hi, here how to build an external Akku with 18650 for Canon (german). And it takes 10'000s of shot's with monitor turned on!
To calculate the time a battery will last, take the capacity of the battery, then divide by the average current drawn.
For example: A monitoring application has the LCD on all the time, and is wired to a 1400mAH battery pack. Sitting in the half-press mode for almost all the time, this means the battery will last roughly 1400mAH/450mA = 3.1 hours. The same camera attached to a 12V SLA with 40AH capacity will last for roughly 40/.45 = 88.8 hours or 3.7 days. (Note that this ignores losses in the battery discharge and gains from voltage conversions.)
