I received an email from Chad a few minutes ago. Chad mentioned that the stock battery charger for his Rampage takes too long to charge the receiver battery and he asked what the best charger would be.
I sell the HexFly HX-705 and it's a great charger for the price. The receiver battery plugs directly into the front of the charger and will fully charge the stock receiver pack in about an hour.
I personally also own and use a B6 that I purchased from Amazon. These are available under several different brand names but to the best of my knowledge, all of these B6 chargers are all the same internally. I like the B6 because I can charge NiMh and LiPo batteries with it. I also like that the B6 has a storage mode for my LiPo packs. The HX-705 will only charge NiMh packs so if you go with the HexFly, you should be aware of that.
Thanks to Chad for the question. I hope this helps him and anyone else that is shopping for a new charger.
By the way, if you found this helpful, please use the links in this post if you buy a charger on Amazon and I'll earn a small commission. Thanks for your support, I really appreciate it.