I have a bunch of IC3 batteries, but my charger died, so I have to replace it. Since Ray-O-Vac has discontinued these, all that are left are for a very hefty price $40 -$50 or more. I'm not willing to pay that price, and if I must, I will buy a new charger and batteries of a long charging period. If I do that, is it possible to safely charge my old batteries with it, or must I throw them away? I don't like wasting anything, especially these batteries, because they weren't cheap when I bought them.