In March 2018 we introduced a new Extended Life Battery.  Prior to that, we offered the Overnight Battery.  If you have the Overnight Battery and PowerShell, and would like to purchase the Extended Life Battery, you will want to upgrade the firmware in your PowerShell.  The process is simple.  The only cost is shipping your PowerShell to us.  There is no charge for us to do the actual upgrade.

On our website at you can hover on the Support Tab and click on PowerShell Upgrade Program.   Complete the form, submit and await the email instructions.  When you receive them, you will then ship your PowerShell to us.