LED lamp (1, 1', 101, 101') configured to be connected to an end (302") of a stem of a lighting apparatus by means of a connection assembly (700, 700'), configured to be mounted on a heat sink contained in said end (302"), said connection assembly (700, 700') comprising: - a circular hole configured for the insertion of a load-bearing structure; or - a parallelepiped-shaped element configured for the insertion in a load-bearing structure; said LED lamp (1, 1', 101, 101') comprising: - the load-bearing structure (2, 2') provided with a first and with a second end (22', 42'); and - at least one first LED module attached in a reversible manner on said load-bearing structure (2, 2') by means of mechanical attachment means (10, 10', 11, 11"), said at least one first LED module comprising: • a printed circuit board; and • at least one LED (6, 6', 7, 7, 8, 8') mounted on the printed circuit board; and - at least one second LED module, attached in a reversible manner on said load-bearing structure (2, 2') by means of mechanical attachment means, said at least second one LED module comprising: • a printed circuit board; and • at least one LED mounted on the printed circuit board; said LED lamp (1, 1', 101, 101') being characterised in that: - the first LED module comprises at least one connector (9, 9') in order to receive electrical current from the outside, said connection assembly (700, 700') comprising a first connector (304, 304', 404, 404') configured to be coupled with the connector (9, 9') of the first LED module allowing the supply thereof; and the second LED module comprises at least one connector (19, 19') in order to receive electrical current from the outside, said connection assembly (700, 700') comprising a second connector (305, 305', 405, 405') configured to be coupled with the connector (19, 19') of the second LED module allowing the supply thereof. - a circular hole configured for the insertion of a load-bearing structure; or - a parallelepiped-shaped element configured for the insertion in a load-bearing structure; said LED lamp (1, 1', 101, 101') comprising: - the load-bearing structure (2, 2') provided with a first and with a second end (22', 42'); and - at least one first LED module attached in a reversible manner on said load-bearing structure (2, 2') by means of mechanical attachment means (10, 10', 11, 11"), said at least one first LED module comprising: • a printed circuit board; and • at least one LED (6, 6', 7, 7, 8, 8') mounted on the printed circuit board; and - at least one second LED module, attached in a reversible manner on said load-bearing structure (2, 2') by means of mechanical attachment means, said at least second one LED module comprising: • a printed circuit board; and • at least one LED mounted on the printed circuit board; - the load-bearing structure (2, 2') provided with a first and with a second end (22', 42'); and - at least one first LED module attached in a reversible manner on said load-bearing structure (2, 2') by means of mechanical attachment means (10, 10', 11, 11"), said at least one first LED module comprising: • a printed circuit board; and • at least one LED (6, 6', 7, 7, 8, 8') mounted on the printed circuit board; and • a printed circuit board; and • at least one LED (6, 6', 7, 7, 8, 8') mounted on the printed circuit board; and - at least one second LED module, attached in a reversible manner on said load-bearing structure (2, 2') by means of mechanical attachment means, said at least second one LED module comprising: • a printed circuit board; and • at least one LED mounted on the printed circuit board; • a printed circuit board; and • at least one LED mounted on the printed circuit board; said LED lamp (1, 1', 101, 101') being characterised in that: - the first LED module comprises at least one connector (9, 9') in order to receive electrical current from the outside, said connection assembly (700, 700') comprising a first connector (304, 304', 404, 404') configured to be coupled with the connector (9, 9') of the first LED module allowing the supply thereof; and the second LED module comprises at least one connector (19, 19') in order to receive electrical current from the outside, said connection assembly (700, 700') comprising a second connector (305, 305', 405, 405') configured to be coupled with the connector (19, 19') of the second LED module allowing the supply thereof. - the first LED module comprises at least one connector (9, 9') in order to receive electrical current from the outside, said connection assembly (700, 700') comprising a first connector (304, 304', 404, 404') configured to be coupled with the connector (9, 9') of the first LED module allowing the supply thereof; and