Convoy (2015 PC game) Wiki
Shield

Shields absorb damage before failing preventing the vehicle from receiving said damage. After a brief cooldown, Mk I, Mk II, & Mk III recover. Mk IV is exclusive to the MCV and must be manually used by the player.

Stats
Stat Mk I Mk II Mk III Mk IV
Hitpoints 100 200 300 600
Cooldown 6 sec 6 sec 6 sec 30 sec
Recharge Rate 60 / sec 50 / sec 40 / sec
Real Cooldown 7.7 sec 10 sec 13.5 sec