On average, a Smeeta Kavat will use its resource booster Charm effect around once every 16 minutes of active gameplay time. - Page 3 - General - Warframe Forums
Kavat Build – Siren Watcher
Triple kavat buff on Kuva flood : Warframe
Warframe adarza kavat
In case anyone was still wondering, the smeeta's buff still applies to traces : Warframe
Warframe adarza kavat
Smeeta Kavat Buffs - General Discussion - Warframe Forums