Necessity of regular supplementary charging for lithium batteries of small home appliances during long-term storage: 1. Prevent permanent capacity attenuation 2. Avoid cell over-discharge lock-up, which renders the battery unable to be reactivated 3. Prevent battery swelling and deformation 4. Reduce potential safety hazards Reach out to us today: 📧 Email: sales@phisinic.com 📱 Phone: +86 181 2533 5987 💡Website: http://www.phisinic.com