It will void the warranty. Excess cable should be left on during installation. You can return the operator for a full refund before the expiration of 30 days from ordering. All of the parts must be in original new condition in the original boxes and return shipping must be paid by you. Returns must be approved in advance.
Battery life is dependent on many conditions.
Two to four years is the expected life span of the primary batteries. The PRO1000, PRO2000 and SL1000 have one 12v battery and the PRO1800 has one 12v battery and one 6v battery. Besides making sure the gate is in good repair and swings or slides easily, minor programming adjustments may be necessary from time to time. The operator is programmable for opening and closing distances. If the gate should not close or open completely, the controls may need reset.