I have a Yaesu VX-170 hand held amateur radio. Have had it about 13 years now. Battery has just about had it and I've been looking for a good one to replace it with. I stumbled onto a Lithium Ion battery for the radio. GREAT! But I've got the Ni-cad charger that came with the radio initially. It's a desk model #CD-30. Would it be safe to charge that battery on that charger? And can you tell me any negative aspects I might expect if I decide to buy the Lith-ion battery?