Lenovo 43R1802 Guia Del Usuario página 6

Batteries can degrade when they are left unused for long periods of
time. For some rechargeable batteries (particularly Lithium Ion
batteries), leaving a battery unused in a discharged state could increase
the risk of a battery short circuit, which could shorten the life of the
battery and can also pose a safety hazard. Do not let rechargeable
Lithium-Ion batteries completely discharge or store these batteries in a
discharged state.
Note: Note for Japan (JEITA guidance): Batteries are expendable
products. When a fully charged battery no longer provides sufficient
run time (in hours), it should be replaced. A battery used for more than
one year is a good candidate for replacement. Battery life is affected by
several factors such as recharge cycle count, temperature, system usage,
screen brightness, applications and other customer preferences. The
battery utility program included with your system can be used to
determine the current condition of the battery.
Note: Lenovo Battery Options are shipped partially charged to
maximize shelf life. To maximize longevity of your battery, you should
fully charge it after receiving it. Batteries should also be recharged at
least twice a year. If the battery is stored with a low charge for
extended periods of time, the battery may become unusable and might
be disabled.
Power cords and power adapters
Use only the power cords and power adapters supplied by the product
manufacturer. The power cord and power adapter are intended for use
with this product only. They should never be used with any other
product.
Batteries
Batteries supplied by Lenovo for use with your product have been
tested for compatibility and should only be replaced with approved
parts.
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Lenovo Battery User's Guide