Bslite 20V/60V Flexvolt 6.0Ah Max Lithium-ion Replacement Battery Compatible with DEWALT DCB606 Power Tool Battery

I gave it three stars because 1 of the two batteries will not charge beyond 1/3. The other is great, delivering consistent power for a significant time. The other fails after only a few minutes of use.

Works just like they said it would.works in my tools and charges in the charger.