The Recharger medal is awarded for recharging resonators. The total XM you’ve contributed towards recharging resonators counts towards this medal. Excess XM which is returned to you from recharging does not count.

Tier XM
Bronze 100,000
Silver 1,000,000
Gold 3,000,000
Platinum 10,000,000
Onyx 25,000,000


The Recharger medal became available on 6 February 2014.