the hyperion charger i have only goes up to 5000mah but my true rc batt is 8000mah. I have the lb10 balancer for it will this put a full charge on it or do i need a new charger ?
The 5i has a power limit of 50w IIRC, so at 4s (which is what I assume you are running), you'll only be able to charge at around 3.5A or less (will vary as the battery voltage gets higher). This isn't the 5Ah limit, it's the power limit. If charging a 2s pack, the limitation will be the 5A limit.