Hi Dwayne, Search on Ebay for the batteries that goes onto the small quadcopter like Hubsan X4. they are 40mmx21mmx7.5mm and 380Ah. Close to your needs, and cheap. http://www.amazon.com/gp/product/B00HS5Y6G4/ref=3Dpd_lpo_sbs_dp_ss_1?pf_rd_= p=3D1944687642&pf_rd_s=3Dlpo-top-stripe-1&pf_rd_t=3D201&pf_rd_i=3DB00B3GP1R= 2&pf_rd_m=3DATVPDKIKX0DER&pf_rd_r=3D13VT7V2GG9AZNKC76EJC Good luck, Jean-Paul AC9GH > On Aug 5, 2015, at 7:00 PM, Dwayne Reid wrote: >=20 > Good day to all. >=20 > I'm working on a new version of a previous project and am looking for=20 > a source of LiPo batteries. >=20 > I have limited space of 45.6mm x 25mm x 5.5mm and am hoping that=20 > someone can suggest a commercially-available packaged battery. I'll=20 > work with a bare cell if I have to but I'd rather find a replacement=20 > battery for some device where the battery doesn't exceed the dimensions a= bove. >=20 > Cell capacity should exceed 600 mAH if possible. >=20 > So far, I've looked at batteries for a few cell-phones but although=20 > the thickness is good, they are either too long or too wide (or=20 > both). I've also looked at a battery for a GoPro Hero 3 - this=20 > battery is a great size but far too thick. >=20 > Since I'm being picky, I'd prefer to find a battery that uses a cell=20 > manufactured in Japan. For whatever reason, I seem to be having much=20 > better lifetime with Japanese cells rather than from some other country. >=20 > I'm hoping that someone can suggest a device that uses a battery=20 > somewhere around that size (45.6mm x 25mm x 5.5mm). >=20 > Many thanks! >=20 > dwayne >=20 > --=20 > Dwayne Reid > Trinity Electronics Systems Ltd Edmonton, AB, CANADA > (780) 489-3199 voice (780) 487-6397 fax > www.trinity-electronics.com > Custom Electronics Design and Manufacturing >=20 > --=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 .