Found a T500 in my "Lithium Battery Donations" box. Good physical shape (needs a deep cleaning). Looks like a SIM slot too? Is this worth restoring for the kids' ChromeOS Flex machine?
Amazon.com: LQM® 10.8V 7800mAh New 40Y6797 Laptop Battery for Lenovo IBM ThinkPad T60 R60 R500 W500 T500 SL300 SL400 SL500 40Y6795 42T4619 42T4620 92P1133 : Electronics