Review on Rechargeable 12V 3000MAh Lithium Battery Pack: Power Bank For LED Strip, CCTV Camera & More by Brad Laverentz

I used this to run a device which needed like 2A @ 12V. When fully charged (5/5 leds), it seems to hover just about 11.6v DC.-1 star for unreliable voltage output: After about an hour of use, the led shows about 3/5 left but the output voltage is reduced (< 10.5v?) and my device is unable to run.-1 star for super slow charger: Seems to take about 3h to get fully charged from 3-5 leds. Full charge seems to take 6h for 1-5 leds.I wish the leds were more representative of the actual usable amount of charge left in the device.