1. If you purchased your book outside our website, you can receive your first battery kit for free. Add one Battery Kit to your cart and enter the code: Free-Batteries at checkout.
For US orders, the Battery Kit shipping is $5.
We want to give you the same special treatment we offer to our website's customers ⭐️⭐️⭐️⭐️⭐️ Here, you will find a registration form to fill out and enjoy our warranty, our lifetime half-price replacement program and special offers.
2. If you purchase your book on our website: You will get one battery kit for free with every order. Add your free gift at checkout!