Product model: p65 Capacity:15600mah(57.7wh) Size: 174*78*21.5(mm) Weight (net): about 420g Cell type: lithium battery icr 18650 Input: mic usb: 5v/2.1a(max) nb: 13-20v/3a(max) Output: usb1: 5v/2.1a, usb2: qc 2.0 5v/2.1a 9v/2a 12v/2a(max), nb: 12-24v/65w(max) Charge mode: cc-cv (costant-current charge/constant-voltage charge) Charge and discharge: yes Application: smart phones, tablet pcs, notebook, car charging Conversion efficiency: more than 93% Charge full time(input): usb charging 8-12 hours (need 2.1a adapter) nb port car charger charging: about 3 hours. Cycle times: more than 500 times Charge temperature range: 0?~+50? Discharge temperature range: -10?~+65? Storage temperature range: 0?~+45?, within 30 days Long-term storage temperature range: 0?~+40?, within 180 days Storage humidity: 45%~85% rh Long term storage time: advise charging it if it is not used within 90 days. Application: charge all kinds of dc5v usb interface products, such as smart mobile phone , tablet pc , notebook, mp3/mp4, digital camera, etc. Specification: 1, qc power bank, quick charge. 2, lcd display, accurate, inteligent, efficiency. 3, multi-function, fit for tablet pcs, notebook, mobile phones, car charged and car start. 4, conversion efficiency up to 93%.(ordinary power bank 82%) 5, safe protection: overvoltage protection, undervoltage protection, overcurrent protection, overtemperature protection.