As in you had it too long? According to their website it has the same 100 day trial period as their mattresses - https://purple.com/adjustable-bed-frame. Source: almost 2 years ago

Purple's adjustable bed - https://purple.com/adjustable-bed-frame - is solid. I have one of these in a guest room. It's $1,500, so not cheap, but not crazy either. If you want a higher end unit that won't break the bank, this is it. Source: over 2 years ago

You can check the cycle count using the System Report app in the power section. Alt click on the Apple logo is a convenient shortcut to open System Report. There is also the third-party Coconut Battery app that gives you other nice statistics and keeps track of battery health if you open it occasionally. https://coconut-flavour.com/coconutbattery/. - Source: Hacker News / 6 months ago

As for the battery not lasting 12 hours in sleep mode (I assume you mean sleep...) it's most likely doing some indexing in the background and will be okay soon. You can check the battery heath using Coconut Battery: http://coconut-flavour.com/coconutbattery/. Source: about 1 year ago

You can check the cycles count with Coconut Battery for Mac or iCopyBot for Windows. Source: over 1 year ago

You can’t really tell anything from that screenshot. I’d ask the seller to use a shortcut like PowerUtil to check the battery health and cycles (alternatively, you could use coconutBattery on a Mac or iMazing on a Windows PC. Source: over 1 year ago

Possibly battery (use Coconut Battery to check battery capacity). Source: over 1 year ago