Laser Pointer Forums - Discuss Laser Pointers | High Power Lasers

i cant seem to find any 1.5 batteries either AA or AAA. theyre all 1.2V. so anyone know where i cant find some 1.5V for no more than $3ea. would using 2.4V instead of 3V make a big differece. my laser seems to last a bit just after i get them out of the charger but not for ong ant it dim's and i see red IR on the wall.
i am using them in a 5mw DPSS.