Understanding electric power
Any two of voltage, current, and power can be specified and the third inferred.  Which two are listed in the datasheet depends on what is customary to talk about for that class of device, what the datasheet writers think is more relevant, or what matters most to the design engineers that give the specs to the datasheet writer.  Sometimes with lesser datasheets you get the parameters marketing wants to push because they think their device is better than the competition in that area.  It varies.

If a devices is rated to require 92 Watts at 12 Volts, then you can infer it draws 7.7 Amps at that operating point.  Again, you can compute any one of these numbers from the other two.

Be careful what the power spec really means.  There are two different specs that have units of power for Peltier coolers.  One is the electrical power the device will use, the other is the thermal cooling power.  Both are relevant to different parts of the design.  Possibly only one of these is listed and a efficiency spec is provided so that you can determine the other.  With Peltier coolers, efficiency is a strong inverse function of input current.  There should be either a equation or a graph in the datasheet showing the relationship.

As always, it's important to read the datasheet carefully.  If you find a spec that doesn't make sense, come back and ask about it specifically.  Otherwise there is too much general stuff to get into here.

As a separate issue, 92 Watts is way way way too much power to expect from a few "pencil cells".  Go read a datasheet for any ordinary AA battery, paying close attention to maximum current and derating at high current levels.