https://tnb.ca.abb.com/en/brands/emergi-lite/?a=p&id=302
Emergi-Lite - Battery Units - ESL Series | Brands | ABB Electrification Canada
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https://www.pcgamer.com/esl-announces-1-million-prize-pool-for-2015-dota-2-series/
ESL announces $1 million prize pool for 2015 Dota 2 series | PC Gamer
Feb 24, 2015 - The ESL says it has quadrupled its investment in Dota 2 this year.