Product Description The InfiRay IBP-2 3.1Ah, 3.6V Lithium Ion battery is the replacement rechargeable battery for the InfiRay Cabin series thermal monoculars. iRayUSA InfiRay Outdoor IBP-2 Li-ion 3.1Ah/3.6V Battery Pack IRAY-AC38 iRayUSA InfiRay Outdoor IBP-2 Li-ion 3.1Ah/3.6V Battery Pack IRAY-AC38 at EuroOptic $199.00 Buy Now Check Price on Amazon Check Price on eBay MPN: IRAY-AC38