- Battery capacity: 500mAh; Discharge time: 860 minutes-2. Nominal voltage: 9V-3. Size: 26.5 * 17.5 * 48.5mm; Weight: 45g-4. Packaging method: cardboard+vacuum formed-5. Mercury content: Mercury free-6. Usage: Remote control toys/smoke alarms/wireless microphones/multimeters/microphones/remote controls, etc