Model:ICR18500 Li-Ion Rechargeable Batteries Voltage:3.7V Capacity:1400mAh Li-ION Cylindrical Batteries Waring Notice :Flat top battery ,Please pay attention to the flat head portion If you have any problem with our products,please contact us by email or ask the question on the product page.We will try our best to solve your problem! Warning *Fire, explosion and burn hazard. *Short circuit, crush ,disassemble, heat above 100℃ incinerate. *Do not use the battery beyond the permitted temperature range.