Review on Power Up Your Devices With TalentCell 24V Lithium Ion Battery Pack - Rechargeable 42980MAh With Multiple Outputs by Wayne Ohlrogge

On a full charge, 12 volt output acceptable. Whereas the 24 volt output is over voltage that some equipment will not work. This was pointed out by other reviewers. Voltage does go down over time which does not do me any good. Got a DROK Adjustable Buck Boost Converter to step down the voltage to 24 volts (not sure how long this will hold up).Battery is a solid unit and seems to have good capacity. Still testing it out. But at this price, one would expect 24 volts to be within 24 volt range.