These are genuine Panasonic batteries, not cheap knock-offs. They fit G10K, G1K, G2K, GF1, GF1C, GF1K, GH1K that I know, maybe others. They are essentially new. Charged and used only once each. They sell new for $40 each. These are $22 each or both for $40. I pay shipping to U.S. PayPal preferred, no fee.