I have the tracer lighted nocks. I bought 4 of the last 6 he had for crossbows (2216) before he sold out the company to that larger company. I do not know of any SLEEP MODE for the lighted knock. What happens with mine is that after 15 seconds, the arrows will start to flash on/off, this saves battery life greatly. The inventer told me that since crossbow nocks were more costly to produce, he could not include them in package deals, which is why he sold them as singles. I guess Easton is continuing his practice.

As for the magnets getting lost, all I did was applied GOOP (actually MArine Goop, it is UV safe) to the battery and stuck it to the location I wanted it..