Description - Micro USB DC 5V input, four independent slots and charging channels with built-in micro-computer management system to ensure the high efficiency - It can detect the Li-ion and Ni-MH battery type and charge the battery automatically under your selected charging current, compatible with (18650, 26650, 26500, 22650, 18490, 17670, 17500, 17355, 16340, 14500, 10440, A, AA, AAA, SC sizes) - Built with Over-charging protection, over-discharging protection and polar reverse protection. Also, it can identify broken battery(BATTERY NOT INCLUDED) - Four LED indicators shows the charging status (25%, 50%, 75%, 100%) and also shows the battery type when insert into battery (1.2V Ni-MH , 3.2V Li-Fe, 3.7V Li-ion, 3.85V li-ion) - When the battery is fully charged, you can use the USB data cable to charge your phone as a portable Feature ✔Identify Li-ion and Ni-MH automatically; But, you need to adjust the charge mode for LiFePO4 and 3.85V li-ion battery. ✔It can active 0V rechargeable battery but the charger don’t charge 1.65V ~ 1.85V battery types. ✔Four charging current mode (500mAh/700mAhn/1000mAh/2000mAh), 2000mAh current mode is fixed only on the fourth slot. ✔Charging under constant voltage and current. ✔Input by DC interface and working voltage is 5V-2A (Micro plug). ✔Built with 5V/1000mAh USB discharge (output) function. Specification: ▶0pen-circuit voltage of USB output : 4.9-5.3V; and the 4th slot is fixed for the USB discharge power source ▶Output current: 1000mAh ▶Open circuit current: 1mAh ▶The corresponding voltage is 4.75-5.25V under 1000mAh current ▶Cut-off voltage for discharge protection: 3.0±0.1V Li-ion / IMR: 18650, 18490, 18350, 17670, 17500, 16340(RCR123), 14500, 10440 Included: ▶1 x battery charger ▶1 x USB data cable ▶1 x User Manual