Endurance Energy + Hydration, Lemon & Lime - 1500 Grams48g Carbs 300mg Electrolytes Endurance Energy powder is designed as a easily digestible and quick supply of energy, delivering 48g of fast absorbing carbohydrates with the addition of 300mg of electrolytes per serving. Endurance Energy powder can be mixed at various concentrations to suit your requirements, and can be consumed as part of a carbohydrate loading plan in the days and hours prior and during your training or event.