... mode, built-in solar charging function and alkaline batteries in general, when you do not ... of sunlight, you can also use ordinary, alkaline batteries to let lamp light, so you can ... -in Rechargeable 3.6V, 600 mAh Ni-Mh battery ·Charger Indicator : Solar charging indicator·Function Switch ... lasts up to 4 hours ·Battery backup - 3 AAA alkalinebatteries / Use AAA alkaline battery for 48 hours of light ...