Battery

A battery, comprising a negative electrode plate and an electrolyte solution, wherein

• a surface of the negative electrode plate is divided into a single-sided region and a double-sided region;
• the double-sided region is a double-side coated area, and a total thickness of double-sided coating layers is Y, in a unit of mm;
• the single-sided region is a single-side coated area, the other side corresponding to the single-sided region is a foil uncoating region, and a thickness of a single-sided coating layer is X, in a unit of mm;
• a ratio A of a thickness of the single-sided coating layer to a thickness of the double-sided coating layers ranges from 0.5 to 0.65;
• the electrolyte solution comprises an organic solvent, and the organic solvent comprises ethyl propionate and/or propyl propionate;
• and
• based on a total weight of the electrolyte solution, a weight content B wt % of the ethyl propionate ranges from 0 wt % to 50 wt %, and a weight content C wt % of the propyl propionate ranges from 0 wt % to 60 wt %;
• then, A, B and C satisfy a relationship that 2B+C≥400*(A−0.5).