High Battery Voltage, Large Capacity?

Battery voltage and capacity are two concepts. The voltage is related to the electrode material and electrolyte concentration. The capacity of the battery is released by the current generated by the electrochemical reaction of the active substance. It is related to the amount of each active substance, reaction conditions, utilization, connection, etc. Therefore, high voltage does not mean high capacity, low voltage does not necessarily mean low capacity, However, under load, the battery voltage is directly proportional to the battery capacity.