Replacement battery fits 16 JRI compatible models. Specifications: 2700mAh, 3.6V, Li-SOCl2. Compatible with: SPY, SPY RF TH, TC, SPY RF TC SPY, SPY A SPY RF A, SPY RF Visu and 10 more compatible models. Replaces: JRI 12059029, JRI 06569. JRI replacement battery designed for Equipment/Survey/Test Charger devices. Delivers steady power for reliable everyday operation.