Find out how to increase your 1RM deadlift quickly and effectively.
In order to increase your 1RM deadlift, try to lift close to your 1RM on a consistent basis.
Doing sets of 10 or 15 reps regardless of how often you do it will not produce a heavier 1RM.
Try working in the 75%-95% range consistently with various reps in the 1-5 range.
Working deadlift reps in ranges that are known to produce hypertrophy and endurance will never result in increasing a lift for absolute strength.
Just sayin… so, pick up something heavy for a couple reps every now and then!