The GLINK 18650-2600S lithium-ion battery is a 2600 mAh (2.6Ah) battery with a voltage of 3.7V and a power rating of 10Wh. It meets Thai Industrial Standards (TIS) and is rechargeable. It can be used in flashlights, power tools, DC electrical appliances, or assembled into battery systems by connecting them in parallel (to increase Ah) and in series (to increase V) for various DIY projects.