Wierd behaviour with Lithium battery

[Sarthdave]

Hello,

I a using a TP5410 based lithium battery charging and boost converter circuit. The circuit is intended to charge the lithium battery and also provide a stable 5V using its internal boost converter. Currently I am experimenting with two types of lithium batteries.
1. A samsung 18650 cell
2. A BL-5C type flat cell
The 18650 have an internal PCM circuit and the BL-5C internal PCM has been removed. I deliberately installed a separate PCM circuit module in both the batteries.

While testing, When I short the 5V to GND using the 18650 cell, the circuit protects it and once the short is taken away, the system starts to function normally.
However, in case of the same experiment with the BL-5C cell, the PCM also protects it from short but after the advent of a short circuit, the system does not produce 5V again. I probed the battery for voltage but it shoes 0V. The wierd thing is the once I remove the battery from the system and re attach it, everything starts to function normally.
My reading on this is that something, somewhere is causing the battery to latch after a short and can only recover once it has been re inserted.
Any ideas on this one? Please share your thoughts on this.

[timpattinson]

Is there a resettable fuse hidden in the BL-5C?

[Sarthdave]

Hello tim,
Thanks for the response. After removing the PCM, It seems tome like a plain cell. I dont have any information about the cell's internals (no datasheet) so I dont know whether the resettable fuse is inside or not.