These batteries were well maintained and show no signs of abuse. Many of the units have the security label on them from Inogen and all of them have the associated Serial Number. Other than some minor wear they look and perform like up to date. I consider in a fair price for what you might be getting, because these batteries are used plain and simple. I will not guarantee battery life or charge status. Alternatively, I test all of the batteries with an Inogen BA-303 external battery charger and all ship with a full charge and are able for use upon arrival. I do accept refunds and or exchanges for so long as my inventory holds up.