Replacement battery for Argus 3 Pro. Specifications: 6000 mAh, 3.7V, Li-ion. Compatible with: Argus 3 Pro. Replaces: Reolink Battery-Li7, Reolink 01DQ0040-19T, Reolink Li16. Reolink replacement battery designed for Security System devices. Engineered for consistent power output across many charge cycles.