Always withdrawal your litecoin to an offline cryptocurrency wallet like the Ledger Nano S or any other wallet that you control. Copy Copied. Note: You will be able to accomplish a BTC-to-LTC or vice-versa conversion swiftly only if you have a verified and registered accounts on the exchanges. Also, they have a mobile app that helps you make such exchanges quickly on the go without wasting too much time. The same goes for Bitcoin ATMs. So any purchase of Litecoin made with a US bank transfer will take a minimum of 5 days. Notify me of follow-up comments by email.