Tenergy via Amazon offers the Tenergy T-333 Universal Battery Checker
for $12.99. Coupon code "DNS01117" cuts that to $9.87
. Plus, Prime members bag free shipping
. That's the lowest price we could find by $4. It features slots for AA, AAA, C, D, 9V, CR123A, CR2, CRV3, 2CR5, and CRP2 batteries. Deal ends June 30.