ON THE WAY&reg;Li-ion Battery 4Pcs Yellow 3.7V 18650 5000mah Rechargeable Battery with Battery Charger+FreeTouch Screen Pen for Flashlight Torch Laser Pen Li-Ion Rechargeable 18650 with IC Protection Can be charged over 500 times Charges 1 or 2 batteries simultaneously indicator light :yellow (before charge )--red (charging )--yellow (finish charge) easy to carry ,best fit for travel ,holds 85% charge over 12month period