Replacement laptop battery options...?

I have two 6 year old laptops that could use new batteries. I have looked at Amazon and Ebay. Ebay offers some less expensive options, but I like Amazon's review/ratings. 4+ Star products only and lots of reviews has rarely let me down, so that's worth paying a little more for. Should be under $20.

$75 is not worth it to me on a laptop that old. Is it running Windows XP? I'd save another $100 and get a cheap Chromebook which would probably be significantly faster and have much better battery life.

I've been using third party replacement batteries, but always choose the better ones that have two year warranty. Tried a cheaper one once, bad results. But the two year warranty ones have lasted well and performed admirably, at about 50% of the OEM price. The better ones are made in Taiwan of Japan, as opposed to China.

WOW what are the odds? That is exactly what I have. I'm on 3rd battery. Second battery was off brand. Didn't last long. Back to (just turned computer over) back to Toshiba model PA3727U-18rs but only get about hour and 1/2 before I have to plug back in.

Also couple skiu numbers 6027b0063804 and D8200074By?

Price of these batteries not good, but some people can't even get a replacement. At least that is what I was told. And I'll believe about anything when it come to hi-tech stuff.

Wives computer has cheap replacement and works good but different brand.

I've ordered several laptop batteries from Amazon.com. Never had a problem with any of them. Just do a search on laptop name, model #, and "battery."