High-capacity 3.7V 900mAh lithium battery designed for SJ4000 Sports DV and compatible with SJ CAM WiFi, SJ M10, EKEN H8/H8R outdoor action cameras. Premium Li-ion cells ensure stable voltage output for extended recording sessions during diving, hiking, or extreme sports. Precision-engineered casing with reinforced contacts prevents power loss from vibration or moisture. Ultra-lightweight design (under 50g) maintains camera portability while delivering 30% longer runtime than standard batteries. Smart IC chip prevents overcharge/overheat with automatic cutoff. Ideal replacement for adventure filmmakers needing reliable backup power in humid, high-motion environments. OEM-grade quality at wholesale pricing with bulk order discounts available.