<https://ultrabook-battery.net/product/lenovo-k49a-l1036f01-l11l6f01-battery/#product>
<http://schema.org/description>
"Battery Type: Li-ion, Battery Volt: 11.1 V, Capacity: 5200 mAh, Battery Color: Black, Condition: 100% New, Warranty: 12 months"
<https://ultrabook-battery.net/Lenovo-Z580A%7B2d%7DIFI_P4355.html>