From Halopedia, the Halo wiki
The PP-16979/AM-Sh is a recharger of batteries. It is used by the United Nations Space Command to recharge the BA-53635/PLMD that is integrated in the M6/R Spartan Laser.
PP-16979/AM-Sh are not fielded with the BA-53635/PLMD often due to logistic issues.
- ^ a b Bungie.Net, Spartan Laser (Retrieved on Feb 2, 2007) [archive]