As long as the same battery is the same voltage and fits the mount on the Rigid tool you should be fine. The connectors matching up and the proper voltage is important to operate the tools but whether it is a NiCad or Lithium ion battery is not relevant to the tool. Charging the new and old batteries is different. Some of the new chargers will charge both new Lithium ion and old NiCad batteries, but the old NiCad charger doesn't have the circuits to provide the proper protection, strength, duration nor make use of the energy visual meter gauge.
7 years, 1 month ago
Chattanooga, TN, USA