Charge your devices using stored energy from any four AA batteries via the DC 5 V USB Output function. Four eneloop AA batteries will charge a smartphone battery to about 50%*. You can use a mix of four AA batteries of any type (even dry batteries) to charge your phone in an emergency or top up personal devices such as wireless headphones on the go. To use, connect your device via USB cable and press the PUSH DC OUT button until all LEDs on the front turn green. Press again to cancel the DC output.
Note: Do not install batteries other than eneloop and eneloop pro in BQ-CC87 except when using DC 5 V USB Output. Do not charge dry batteries. USB charging cable to connect a compatible device is not included. When the DC 5 V USB Output is used, four LEDs on the charger blink green every two seconds.
* Estimate when recharging a 3.7 V / 2700 mAh smartphone battery with 4x eneloop AA batteries. Varies depending on the environment and battery condition.