This battery adapter for Craftsman battery to Ridgid battery,convert Craftsamn 20V battery to Ryobi 18V cordless series tools use. Perfectly matched for Craftsman 20V Li-ion Batteries. Power by Craftsman 20V Li-ion battery, work with CMCB202 CMCB204 CMCB206 CMCB209 and more; Replace for RYOBI 18V Lithium-ion batteries.
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