This Mod (server side!) makes TNT get charged instantly after getting placed by a player, without the player needing to charge it manually. Tihs can be used e.g. for minigames or 1v1s where the players don't want to extra trigger the tnt manually with e.g. a flint and steel. In addition to that, there is an option in the config file to change the charge duration of the tnt after it was placed. This can be changed while in the game and will take effect immediately.
This can be bypassed by sneaking.