REDI-CHARGE Base for charging the LIFEPAK 12 and LIFEPAK 15 lithium-ion batteries. This charger requires the use of an adapter tray, one fits LIFEPAK 12 Li-Ion batteries, another fits LIFEPAK 15 Li-Ion batteries. Choose your configuration from charging base only, or get the charging base with the required adapter tray, or trays, and A/C power cord for your specific LIFEPAK device. *Please note: This charger can only be used for charging the LIFEPAK 12 and LIFEPAK 15 LITHIUM-ION batteries.* ** A/C Power Cord & Adapter Tray are sold separately