[DragonicRek]

Came across this which I thought was worth sharing

Note:
This is for educational purposes only. I am not responsible for anything that happens to you otherwise. If you attempt this and get caught, responsibility will be on you : the social engineer

If you want free batteries, purchase the Amazon-Branded batteries.
Wait a day after the batteries arrive and call Amazon customer service. Give them some excuse on why the batteries are bad. Anything reasonable works.
Since you're not allowed to ship faulty batteries - since it can pose a fire-hazard -Amazon will send you a refund without asking you to return them.

Note: Obviously with any method, don't over do it. It will get suspicious and can possibly result in Amazon blacklisting your home address/account.