This is a new Lenovo L21L4PH3 battery. This L21L4PH3 battery features the highest quality lithium-ion cells and components that charge faster and last longer than cheaper, lower quality batteries. This Lenovo L21L4PH3 battery is compatible with the Lenovo Yoga Slim 7 Carbon 13IAP7 models.

This Lenovo L21L4PH3 battery is 100% compatible with the original battery specifications and is individually tested and backed by a 2 Year warranty. This Lenovo L21L4PH3 battery is rated 7.7 volts and 50 Whr and will normally last 5-7 hours on a full charge.

You can expect about 7 hours of run time with this Lenovo L21L4PH3 battery when new, depending on your energy use.