jaraxel1zx i had that very problem it read erra about 5 times when i was shooting thru it, never thought about it be to be a worn battery,i must say i never thought the readings to be accurate, wish they were, so i as stated will retest with a new battery. also just got a pm, from tom at accurate mold, my 385 gr, bbt's mold won't be ready till next week some time.i thank al;l whom have posted, and i will say again, if they ever come available , buy yourself one of these Texans, they are truly a awesome , powerful, fun to shoot, easy to load and shoot, accurate,very powerful air gun.imo the best bang for the buck,period.IMO