[Rechargeable 6600mAh Battery Pack] 3.7V - 6600 mAh - 24.42Wh, 1S3P, Lithium-Ion battery pack, with JST-PH2.0mm 2-pin female interface connector. Replacement Battery for models ST3024 ST3026 ST3027 ST3028 BT1080 [High Performance] 24.42Wh high-performance rechargeable Li-ion battery pack can support stable and safe power supply output at 0.2C, which means longer discharge time. [Protection-PCB] Built-in PCB-FR-4 with IC-DW01 provides the battery pack with many safety features to protect against over-charge and over-discharge, operating temperature control, over-current, and short circuit protection. [No Memory Effect] Li-ion batteries have no memory effect after the initial charge. [High Energy Density] Battery pack is assembled with advanced technology and provides a high energy density of 162 Wh/kg. [Low Self Consumption] Excellent for standby and consumes less than 0.08mV/h. The remaining capacity after one year of storage ≧ 85%. We recommend charging and discharging once every six months. [Usage] Replacements for all your power needs, including Simplehuman Mirror, outdoor lights, fire alarms, etc. [Quality assurance] Our supplier is certified by CE, Rohs, UL, IEC62133, and UN38.3 and has strict testing procedures so you can enjoy a reliable battery for a longer time. [Manual] Please read the battery pack manual @ www.xain-usa.com for more technical specifications, warnings, warranty, and liability. [After Sale Service] You can return this product within 30 days for a full refund. The manufacturer has a one-year warranty against manufacturing defects. For any questions, please contact us at service@xain-usa.com, and we will get back to you within 24 hours. Li-ion Rechargeable Battery Pack 3.7V 6600mAh The battery pack is compatible with all 3.7V - 6600mAh 3x18650 and JST-PH2.0mm 2-pin female plugs, as shown. Weight = 5.64oz (160g). Dimensions are 0.77"x2.26"x2.71"