If you did not register your battery with Ridgid at the time of purchase there is a good chance they will NOT warranty them. Ya thanks for not telling me that Home Dept when I bought a combo kit. Anyway you can get these for about half what the Ridgid ones cost.

FYI: You can charge these on any Ridgid charger that charges lithium batteries. Here is one if you don’t have one.

This is a dual chemistry battery charger by the way. It will charge both NiCd and Lithium batteries, Ridgid or other brands.

Here is a good replacement for factory Ridgid batteries. If you did not register your battery with Ridgid at the time you purchased them and cannot get them to warranty the “lifetime” warranty they advertise, this is a cheaper solution than buying another Ridgid battery.