Hi all.have just bought the Savage Flux and would like advice on the best way to go regarding Batterys and Chargers,I own a BAJA 5b ss petrol so the electric Savage is all new to me, any advice would be most wellcome,Iam thinking 2xlipo,s 7.4 4000mAh+the correct charger with the capacity to charge both batts together and any safety fitments that you may think I need.::Thanks