Replacement battery fits 5 Fieldpiece compatible models. Specifications: 1800mAh, 3.7V, Li-ion. Compatible with: SRL2 Leak Detectors, SRL8 Leak Detectors, SRL8, SRL2, SCL2. Replaces: Fieldpiece RLB2. Fieldpiece replacement battery designed for Equipment/Survey/Test devices. Built to deliver the same performance as the original.