Review on Rechargeable 12V 11000MAh 9V 14500MAh 5V 26400MAh DC Output Lithium-Ion Battery Pack For LED Strip, CCTV Camera, Portable Li-Ion Power Bank With AC/DC Charger - Black by Steve Washington

UPDATE 2: Talentcell replied to my email within a few hours and has already arranged a replacement. Their customer Service is EXCELLENT! Despite the slight issue with the battery, I very happy! Now back to making music. UPDATE: So I'm having a bit of an issue. The battery works great with my drum machine during the first half of the battery's charge. After the LED indicator drops to two green lights, I seem to be having issues again. I'm still getting about two hours of solid play time but eventually, my drum machine still lights up and appears to work but only noise/low end hum can be heard. I've only given it one charge so far so I'll see how it does after the next. Anyone have any suggestions?If it persists, I will need to return it.Far better than I expected. Just make sure you charge it up first. When I got it, it showed it had a charge but didn't work. After a few hours charge, it was fantastic. One down side is you only get one power cable (it works for the 12v and the 9v but the 9v barrel's plug is larger than what I'm use to). I may be wrong, but it seems like a special cable that swaps ends to work with both voltages (12v tend to be bigger internal barrels).