Get yourself this rechargeable LED lighting system with 4 tube lights (one on each of the four corners). Can light all four together, or two at a time, as preferred. AC (240V) or solar rechargeable (6-12V,0.5A Dc). A USB output enables charging of mobile phones etc by the 4000Amh sealed battery. Up to four hours between charges. LED Emergency Light Power Bank for Mobile Charging Battery 4000mAH Model KM-7671-17B-P3Large 25x10x10 cm. – Lithium Battery Capacity 4000mAH Adjustable brightness Can be used as a backup mobile phone battery charger via USBEasy to use by charging the house for 9 hours, can be used for up to 24 hours There is a USB port for plugging in a mobile charger Suitable for all Use Both home and car Entering the forest, camping Can adjust the brightness 2 types, 2 lamps and 4 lamps can be opened at a time.