Jeremy Rellosa at the Strategist covers Chargel along with a select list of energy gels. 

"Chargel is the first gel I’d recommend if you’re looking for a gel with a bigger carbohydrate intake — especially if you’re running or training for long-distance races, such as an ultramarathon — since it has almost twice the amount as many of the others on this list."

Read more of the detailed Chargel review here and check out other gels too.