This is brand new, in original packaging. This is a Dsanke branded 56V battery, which is compatible with Ego 56V power tools. This is rated at 5Ah. This includes an optional metal mounting bracket too. More details from the manufacturer:


Powerful 5.0Ah Capacity: Delivers long-lasting power and extended run time—ideal for high-demand landscaping tools. Say goodbye to frequent recharges. 
  • Broad Compatibility: Fully compatible with EGO 56V tools including models like ST1502LB, CS1604, LB6504, HT2400, and chargers such as CH2100, CH7000, CH2800D, and CH5500. 
  • Certified Safety: Equipped with CE, FCC, PSE, and ROHS certifications, and integrated with smart protection chips to guard against overcharging, overheating, and short circuits. 
  • Easy Installation: These batteries slide into any EGO 56V Power+ tool and charger with no extra steps – just click them in place and go. Perfect for lawn mowers, leaf blowers, hedge trimmers, string trimmers, chainsaws, and other EGO cordless equipment. 
  • Bonus Accessories Included: Comes with battery holders and screws for wall-mount storage or transport convenience—keep your workspace organized.