Maybe this guy can help. He did a teardown of the battery pack: http://softsolder.com/2012/06/25/canon-nb-5l-battery-teardown-and-cheate= r/ -----Original Message----- >From: Dwayne Reid >Sent: Jan 19, 2016 7:03 PM >To: pic microcontroller discussion list >Subject: [EE]: Where to purchase LiPo cells? > >Good day to all. > >I'm currently working on two projects that both need a small LiPo cell. > >The cell that I want to use is used in the Canon MB-5L battery=20 >pack. The stated capacity from Canon is 1120 mAHr, which is right in=20 >the ballpark of what I need. > >I'm *very* constrained for space. It turns out that the cell inside=20 >this particular Canon battery pack is pretty much perfect in every respect= .. > >I'm hoping that someone can tell me where I can purchase these=20 >cells. I greatly prefer to source cells that are manufactured in=20 >Japan, as opposed to China. > >The research that I've done so far makes it clear that many (most) of=20 >the Canon NB-5L battery packs sourced from China are counterfeit and=20 >have crappy cells. Various sites have said that the cells can be as=20 >small as 540 mAHr. > >I've purchased some of those knock-off batteries and the cell=20 >contained in the ones that I received look to be about 750=20 >mAHr. That doesn't provide enough run time for my product. > >These devices are going to be completely sealed against moisture and=20 >it's expensive to break apart the case just to replace a defective cell. > >The size of the Canon cell is 45.6mm x 25mm x 5.5mm > >Does anyone have a suggestion of where I might look to find these cells? > >Many thanks! > >dwayne > >--=20 >Dwayne Reid >Trinity Electronics Systems Ltd Edmonton, AB, CANADA >780-489-3199 voice 780-487-6397 fax 888-489-3199 Toll Free >www.trinity-electronics.com >Custom Electronics Design and Manufacturing > >--=20 >http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive >View/change your membership options at >http://mailman.mit.edu/mailman/listinfo/piclist --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .