ELECTRODE POST AND BATTERY COVER

An electrode post for a battery cover, includes an upper substate and a lower substrate. An upper connection surface for contacting with an external component is arranged on one side of the upper substrate, an extension board is arranged on the other side of the upper substrate, a groove for receiving a sealing element and a fastener is formed in a side wall of the extension board; and the lower substrate is arranged at a tail end of the extension board, a lower connection surface for contacting with an inner component of a battery is arranged on a side, opposite to the extension board, of the lower substrate. The connection strength of the electrode post and the battery cover is increased and the structural strength and sealing performance of a final battery product is increased, thus improving the reliability and prolonging the service life of the final battery product.