Those 2 would work together. Shipping is free from Hobbypartz if your order is over $50. The power supply will cost more if it's the only thing you buy from their website because of the shipping. It's a 350w ps so you should be able to run 2 chargers at 2c charging 4s 5000mah batteries. You will be at or near the capacity of the chargers and power supply while doing this. There are always inefficiencies that have to be figured in from the chargers and power supply perspective.