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Canon BP511 Disassembly

don't solder lithium ion cells! it is very dangerous. lithium ion cells can explode when overheated, that's why so many laptop batteries get recalled. spot welding just like in a factory is the best way to join them. go to a battery shop and ask them to do it.

battman
Tue, 07 Aug 2007 15:59:29 +0000

Thanks for pointing that out, battman. I've rebuilt a notebook battery pack before. Luckily, I didn't solder the battery cells. Instead, I just laid the battery cells down in the plastic battery case. I inserted the metal battery tabs between the batteries to provide contact.

Chieh Cheng
Tue, 07 Aug 2007 19:43:34 +0000

So did you ever think about finding some different batteries for this unit and rebuilding them? I to have some that well take about 10 pictures and I need to do something with them also and I thank you for helping me open them up, now to figure out what to do with it now that it is open. Thanks Chris Johnson.

Chris
Mon, 19 Nov 2007 06:32:43 +0000

What about making a dummy battery? My original battery is no good - I need to either purchase an AC adapter for continous power or keep switching batteries for my night shots. I take star trails that can last 10 hours long (multiple 5 minute shots). Any ideas?

Mike C
Sun, 25 Nov 2007 21:48:18 +0000

Perhaps it could be turned into an adapter to use standard AAs that one might already have lying around in abundance (or might be able to obtain more easily while on the road)?

Rex Dart, Eskimo Spy
Fri, 20 Jun 2008 04:40:26 +0000

Yes. I have since then used the disassembled BP511 battery pack to experimented with AA alkaline batteries. I've documented the result in the "Experimental Canon BP511 Dummy Battery Interface" article.

Chieh Cheng
Fri, 20 Jun 2008 16:40:03 +0000

Good battery is longer battery life,and no energy effect.A few days ago,I found a better canon BP-511 battery on http://www.digitalcamerabattery.org/digital-camera-battery/c . . .

rola
Mon, 24 Nov 2008 03:39:03 +0000

Thank you for the article. I was wondering what was inside these batteries.

Has anyone succeeded in replacing the cells? The batteries are rather expensive at about 10USD each in the cheapest generic versions.

At the same time, I can get 10 cells (or five batteries worth) for 17USD. Is soldering absolutely necessary? Has anyone soldered successfully?

Timothy Takemoto
Wed, 26 Dec 2012 14:23:19 +0300

You can salvage a good 3.7 cell from different battery packs and then re-solder them to get a working pack, In fact one bad cell will affect the pack as they are connected in series , You can charge each cell separately and check them using voltmeter to measure the voltage while loading the cell with a 6V lamp for 5 minutes or so and check if the cell voltage remains longer this means a good cell, also you can leave it for the next day and re-measure again,if the cell passes the test,you may use two good cells to assemble one good battery pack .Be careful not to put it in wrong polarity.

Samir Mahdy
Mon, 14 Apr 2014 13:45:40 +0400

Hey! That's a really good idea, Samir! I have a lot of old cellphone 3.7v batteries lying around. And I've been wondering what I could do with them. They might not fit in the BP511, but you got me thinking about other potential applications.

Chieh Cheng
Mon, 14 Apr 2014 22:03:36 +0400

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Title: Canon 10D external battery pack
Weblog: Camera Hacker
Excerpt: Dear Chieh, I know you hack cameras and have even written a book about hacking cameras. On the other hand, I have no technical or tinkering abilities. So, I was wondering if you ever do the hacks and sell them. Iím looking for an external battery power source for my Canon 10D. Iím assuming suc . . .
Tracked: Tue, 27 Nov 2007 22:10:43 +0000

Title: Camera Hacker Announcement - Hacks
Weblog: Camera Hacker
Excerpt: Back in June, I disassembled the Canon BP511 battery pack. This battery pack is used in Canon EOS DSLR camera. And I had high hopes on turning this battery pack into something more. Today, I've successfully converted the battery pack into a dummy interface to experiment with. I've documented the pro . . .
Tracked: Wed, 28 Nov 2007 11:13:10 +0000

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