This Kindle Fire HD 7" (2012, 1st Gen) is what you need to bring your dead E-reader back to life!

This used battery will have a 90% capacity of the original battery.

Battery degradation is an inevitable part of your E-reader's lifespan — extend it with this replacement battery compatible with the first generation 2012 Amazon Kindle Fire HD 7". If your E-reader won’t turn on, won’t hold a charge, or you simply experience poor battery life, this replacement battery may be what you need to fix it.