Lenovo ThinkPad Helix 20CG User Manual page 6

Store the rechargeable batteries or products containing the rechargeable batteries at room
temperature, charged to approximately 30 to 50% of capacity. We recommend that the batteries be
charged about once per year to prevent overdischarge.
Do not put the battery in trash that is disposed of in landfills. When disposing of the battery, comply
with local ordinances or regulations.
Notice for built-in rechargeable battery
DANGER
Do not attempt to replace the built-in rechargeable battery. Replacement of the battery must be
done by a Lenovo-authorized repair facility or technician.
Only recharge the built-in rechargeable battery strictly according to instructions included in the
product documentation.
The Lenovo-authorized repair facilities or technicians recycle Lenovo batteries according to local
laws and regulations.
Notice for non-rechargeable coin-cell battery
DANGER
Do not attempt to replace the non-rechargeable coin-cell battery. Replacement of the battery must
be done by a Lenovo-authorized repair facility or a Lenovo-authorized technician.
Do not put the battery in trash that is disposed of in landfills. When disposing of the battery, comply
with local ordinances or regulations. The Lenovo-authorized repair facilities or technicians recycle
Lenovo batteries according to local laws and regulations.
The following statement applies to users in the state of California, U.S.A.
California Perchlorate Information:
Products containing manganese dioxide lithium coin-cell batteries may contain perchlorate.
Perchlorate Material - special handling may apply, See
www.dtsc.ca.gov/hazardouswaste/perchlorate
Prevent your tablet and adapter from getting wet:
Do not immerse your tablet in water or leave it in a location where it can get saturated with water or other
liquids.
Use supported charging methods only:
To recharge the internal battery of your tablet safely, see "Charging the battery" on page 14.
Attention: Use only Lenovo-approved ac power adapters and power cords. Unauthorized ac power
adapters and power cords could severely damage the tablet.
Charging devices might become warm during normal use. Ensure that you have adequate ventilation around
the charging device. Unplug the charging device if any of the following occurs:
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ThinkPad Helix User Guide