I got 2 2s 5000 mah lipo venom packs and they charge up to 8.30 and wont go any further ( now thats according to my Venom pro charger im charging at 5 amps ) now i put a volt meter on it and shows 8.37-8.39 will these chargers not show the correct data or just because of how high my amps are it just jumps charging up to the 8.40 and shuts off because says its full....... do lipos loose there capacity after so long of running and recharging thnx in advance Will G