Green’s Dictionary of Slang

energizer n.

(drugs)

1. phencyclidine.

[US]Abel Dict. Drug Abuse Terms.
[US]ONDCP Street Terms 8: Energizer — PCP.

2. MDMA.

[UK]S. Champion Disco Biscuits v: Kinder Eggs, Energizers, Hammer & Sickles, Disco Biscuits.