Replacement battery fits 6 Autel compatible models. Specifications: 2800mAh, 3.7V, Li-Polymer. Compatible with: TS508K, xiTPMS TS408, MaxiTPMS TS508, MaxiTPMS TS508K, TS408, TS508. Replaces: Autel MLP604193. Autel replacement battery designed for Engine Fault Code Reader devices. Built to OEM specifications for reliable performance.