Accuracy depends on how many satellites it had a lock onto. You should have the last known position on freeflight. It may have flown a bit further when it dropped. It would have lost signal first. So I would go to where you think it is and walk towards the direction it was flying.
If its still powered up, it will transmit its known position.
It won't even let you take off if the battery is less then 20% All I was saying is if your flying and the battery drops to 2% it will automatically land. It happened to me twice. I had a battery going bad and level dropped faster then normal and drone landed. I got rid of the battery after that happened.