do you normally have to recharge the premaid battery packs from serpent when you first get them?(5 cell 730mah) because i bought this battery pack yesturday and it didnt work i was just wondering. because i called the store where i bought it from atomic hobbies and the guy said you always have to charge them when you first get them, but i dont believe him i think he was lying to me tryna sell me defected product thats why am checking with you guys to get the truth out of this.