TNJKENN use fresh batteries, have backlight off , calibrate every time you powerup, tare every 5 or so loads, wait 3 or 4 seconds between trickle, place on level surface . check with a beam scale often. Same rules apply for all battery powered scales. If your scale plugs in ; have it plug into a isolated circuit and/or plug into a noise filter.
I have one of these scales. You really need to read your directions. This is one of the most foolish things I've seen. Never had a problem with mine great little scales.