Hello IPAC. For example the Predator Pro, can use 1x18650 Li-Ion / 2x18350 Li-Ion / 2xR123 Li-Ion / 2xCR123A. The runtime on max mode: 1h 20min, minimal mode 100 days. I do sell the 18650 rechargeable batteries and charger. I do sell the CR123A lithium battery as well and they are not rechargeable. Also, the Partner C1 will use 1 CR123A with runtime for max mode: 40 min and minimal mode: 13 days. Hope it helped you decide. You can email or call me anytime if you need more information.
Thank you,
Frank DeMarinis