bad qualiyty and no reponse

I installed two 7W rechargeable lights and am definitely not getting the 5 hours battery life as claimed on their website. I only get 1 - 1.5 hours and maybe full light, than dimming and dying at around 2 hours. Are they both faulty or is this what can be expected? I contacted them three times regarding this with NO response.. Not a good product or service!