A dissected spent 9V lithium battery. What can be seen is the outer aluminium case; the inner plastic case with two cells still in place, each cell is wired in series and separated by compartments in the plastic case; and the third unwound lithium cell, removed from the compartment nearest to the camera.
<p>Missing is some protective plastic and gel from the top of the compartments and the terminals for power connection.
</p>
There was no IEC designation given on the battery or packaging, but it can be extrapolated as 3CP407.
<a href="//commons.wikimedia.org/wiki/User:Lead_holder" title="User:Lead holder">Lead holder</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>