... flashlightDynamo, cranking hand-generator2 types power source: Built-in rechargeable battery, dynamoPower supply for mobile phone, camera, etcTypical Application ... : ITEM PARAMETERS Light source 3PCS LED, white, 12000MCD Rechargeable battery Lithium, 3.6V 120mAHCaution:Light had better to ... dont long-term shelve it, Please charge it over 8 hours every 2 months,or it would shorten the battery ...