Note: Only the Jasper Always, Jasper Now and Jasper Curve take these 123A batteries. The Jasper APC uses standard AAA batteries.

Green lasers are great for astronomy, but did you know ordinary AAA-batteries lose most of their strength when the weather gets cool — even below 60°? That’s why the Jasper Always works on a special 3 volt lithium battery that can handle cooler temperatures. Ideal for astronomy and other outdoor uses, the Jasper Always retains it’s strength even on chilly nights.

These size 123A batteries are commonly used in cameras, and can be purchased from almost anywhere for $8-$15. While each Jasper includes a single battery (they only require one) we sell extras for $5 each. And if you buy six or more, the price drops to $3.50 each.