I was having similar problems, shortened battery cycle, warm to touch, bulge (which I first noticed as being difficult to install in the windshield mount), then I found this forum/subject...yeah!!! So I checked the link for the replacement battery, and the other link for the method to open the case, and measured my battery to confirm fit before buying. The 4358 is specified as 86mm x 50.5mm x 6mm, not including the length of the tabs (add 10 mm, though I suppose they could be trimmed) and PP membrane (add another 2.5 mm), (for total length of 98.5 mm). The battery in my 16 GB flash A5A is only 83mm x 46 mm x 6mm with the charge/discharge protection PCB occupying another 5mm of length (for a total of 88mm). It appears that niceguy has a hard drive model, which may have more room than the flash drive models. Or is the battery smaller than the spec sheet says? I found another battery, same source, Item 4355, http://www.batteryspace.com/polymerli-i ... thpcb.aspx
, which appears to be the 4358 with protection PCB already installed, (and is about $2 cheaper). It is said to be only 85mm x 50mm x 6mm. If the 85mm includes the PCB, the length would fit, but no way to fit that width in mine. Can anyone confirm the dimensions of the 4358 or 4355, and that it will fit in a flash drive model? If not, has anyone found one that will fit in the flash drive model?
Another thing: It appears that the protection PCB included with the 4355 has only two connection points to the device in which it is installed, but the A5A appears to have three, so I'm not sure their PCB wold work properly with the A5A. Does anyone know?
Thirdly, while attempting to close my A5A up after working on it, the 'on/off' button apparently slid into it's 'pressed' position and the actual 'on/off' switch got hung up on the button and was snapped off. It is very tiny and a surface mount device, which I have not worked with. Looks difficult to put back together. I found a local battery store (Interstate) which says they may be able to repair it. So be careful.
Finally, when I first opened the case, there was a little metal box, about 12mm x 10.5mm x 2mm, one of the larger sides open, loose inside an other wise empty space of about 30mm x 25mm x 4 mm, under the lower right corner of the screen. It appears that it may have been attached to a sticky piece of plastic/tape. Does anyone know what that is, and how and to what it should be attached?