Multimeters/measurement instruments: Recommend 9V lithium battery, constant voltage output ensures measurement accuracy, 9900mWh large capacity supports long-duration continuous measurement. USB-C direct charge, no need to remove battery.
Smoke detectors/gas alarms: 9V lithium battery has no leakage, protecting alarm precision circuits. Low self-discharge rate (<3% monthly), long-term standby without power loss, ensuring alarm always ready.
Guitar pedals: 9V lithium battery constant voltage output ensures stable tone, no noise from voltage drop. USB-C direct charge convenient for quick top-up between performances. 500+ rechargeable cycles, greatly reducing performance costs.
Wireless microphones/walkie-talkies: 9V lithium battery large capacity supports long-duration use, USB-C direct charge can use phone cable for top-up, convenient for emergency use at performances or events.