A perfect combo!!
I recently purchased both of these, and I'm very pleased with them. One to charge and the other to test the capacity of alkaline, lithium, as well as NiMH rechargeable batteries. I already pulled out several alkaline batteries that I had placed in the "to be recycled" ziplock bag thinking they were completely dead. The tester showed 80% capacity in one of the saved batteries! I included my old iPod in the photo just to show you the dimensions of the products. I just put ZTS Tester inside the La Crosse bag so they'll always go together. The size of these should be perfect for traveling as well as for home use...