Reverse Polarity Protection with parallel P-MOS transistors
130mA is abs. max. so you shouldn't use it that high. It will more or less work under ideal conditions.  

Note that you can use an N-channel as well if there is no common ground on the battery- just flip the circuit- maybe you have a more appropriate N-channel transistor for this particular application. 

Also note that as the battery dies the current may split even less evenly because you will be approaching Vt, so the circuit may only live to work once per set of batteries- many circuits (those with switchmode converters at the input, notably) draw more and more current as the voltage drops so you may have a perfect storm.

On the other hand, the drop across the MOSFET cannot exceed about 1V because of the body diode (the transistor is being used "backwards" in this application).