The YDL 955565 is a 5000mAh 3.7V rechargeable lithium polymer cell. Finished size is 9.5 x 55 x 67 mm including the protection board, with a company capacity-based weight of 82 g. It includes a built-in PCM, 50 mm 26 AWG red and black leads, and a fitted JST PH2.0 (PHR-2) connector.Typical applicationsThis fixed-capacity cell suits low-rate portable electronics with sufficient internal space, including: Portable monitoring equipment LED lighting systems Handheld terminals Portable test instruments Custom optionsLead length and connector can be changed for your assembly. Capacity is fixed by the cell size; share the available battery space so we can recommend a suitable model.Safety notesRed is positive and black is negative. Do not reverse polarity. Charge only with a CC/CV LiPo charger to a maximum of 4.2 V. Do not puncture, crush, expose to flame, or short-circuit the battery.