1.Fast charge speed, 1.5a for each slots; supports current setting automatically and manually, seven current gears can be chose. 2.The charger is fully compatible with almost all cylindrical rechargeable batteries like li-ion, imr, inr, icr, ni-mh, ni-cd, lifepo4 10340-26650. 3.Lcd screen will show the battery capacity, voltage, current, internal resistance, remaining charging time, battery percentage, temperature and so on. 4.C2-4000 is a professional instrument-level measurement, compatible with charge and discharge at the same time; 5.Goods with ce, fcc certifications and 3 years warranty. Reviews on cpf, ecf, blf etc. Parameters: Size: 5.83in*3.3in*1.9in Weight: 9.16ounces0.63b Material: fireproofing pc+abs Color: black Input voltage /current: dc 12v/2a Output voltage: 4.20v±1% /4.35v±1% / 3.6v±1% / 1.48v±1% Output current: li-ion (max) 2*1.5a ni-mh/nicd (max) 2*1a Apply to: li-ion(4.2v/4.35v) (imr/inr/icr) / lifepo4(3.6v) 10340 / 10350 / 10440 / 10500 / 12340 / 12500 / 12650 / 13450 / 13500 / 13650 / 14350 / 14430 / 14500 / 14650 / 16500 / 16340(rcr123) / 16650 / 17350 / 17500 / 17650 / 17670 / 18350 / 18490 / 18500 / 18650 / 18700 / 20700 / 21700 / 22500 / 22650 / 25500 / 26500 / 26650 Ni-mh / ni-cd(1.48v) Aaaa / aaa / aa / a / sc / c / d Package information: Package include: 1*c2-4000 1*adapter 1*user manual Adapter information: Input voltage: 100-240v Output voltage:12v Output current:2a Material: pc Advantage: Simple design but has all features of a top charger, capable of battery charging and chargeing-discharging-charging; Two slots charging/dischaging independently, max 1.5a for each slot, charging fast, only 2 hours can be fully charged for 2pcs 2600mah lithium battery. Note: Lifepo4 / 4.35v li-ion battery, charger can not automatically identify, you need to manually select the battery type. Lifepo4 if not manually set, the charge will be charged according to li-ion 4.2v, the battery will be the risk of explosion