Luminous us good company fir power bank devices . I have been used a ups for my samsung computer. It has a good backup and good accumulating capacity of electricity it can be easily charged and gives good backup. It has long power durability which is the beast quality of this product
The size of luminous inverter is comparatively large there for it occupy mire space then other but it goes due to best quality .
The service center of this product is not available everywhere but service is satisfaction
I would suggest you for buying this