Perman Portable Power Bank 18650 Battery External Backup Battery Charger With Key Chain (Blue) Charger only, battery not included. No memory, more than 500 circle time. Built with IC chip to protect your devices from short circuit, overcharge. Compatible with: USB charging mobile phones and electronic devices, New rechargeable 18650 battery. Equip with strap, easy to carry. Color: Black, Blue, Yellow, Pink, White, Green.