I have now owned this UE Megaboom 3 for over 2 years. However, I can't speak of intensive use. Recently, I noticed that my Megaboom no longer charges. I have a strong suspicion that the battery is defective. Is it possible to order a replacement battery from you (Li-ion Rechargeable Battery, 2850mAh/21.4Wh, 7.4V)? Unfortunately, the warranty has expired.