if you already bought some ebook from Amazon then you need Kindl

to view them, because Ipad will not support the ebook from Amazon.

They kinda of mutual exclusive from eather other for business purpose.

The screen of Kindle is designed to last long time, but there is a

tradoff on visuability, the drawback as you mentioned. But kindle battery

is supposed to last 6-8 hours, so it is normally not a problem. There

are a few models of Kindle, the better one should have the word lookup feature.