Texas Instruments TI-84 Plus CE Quick Start Manual page 3

TI Rechargeable Battery maintenance for TI-84 Plus CE™ handhelds
Lithium-ion batteries have a limited life, which is affected by several factors: environment, storage, the
number of charge/discharge cycles, and level of discharge/charge. To extend the TI Rechargeable
Battery lifespan and battery life, we recommend following these simple guidelines:
1. Avoid heat and humidity:
• TI Rechargeable Battery is designed to operate optimally at room temperature.
• Heat can reduce lithium-ion battery life.
High humidity environments should be avoided.
•
2. Usage and Charging:
• As lithium-ion batteries age, they lose capacity. When properly maintained and under normal
usage, batteries are expected to last at least several years.
• If you use the TI-84 Plus CE™ handheld regularly, recharge the TI Rechargeable Battery
often. Avoid waiting until it is fully discharged.
If you do not use the TI-84 Plus CE™ handheld regularly, fully recharge the TI Rechargeable
•
Battery at least once per month.
• Do not leave the TI-84 Plus CE™ handheld connected to a charging device for longer than 3
days.
• Use only TI Rechargeable Battery approved for the TI-84 Plus CE™ handhelds.
Use only charging devices approved for the TI-84 Plus CE™ handhelds.
•
3. Recommendations for storing TI-84 Plus CE™ handhelds with lithium-ion TI Rechargeable Battery
for 3 months or longer:
• The best temperature for proper care and storage of lithium-ion batteries is between 0–25°
• Extended storage can cause batteries to discharge deeply, which can deteriorate the lithium-
ion cell and reduce the TI Rechargeable Battery capacity, service life and ability to recharge. It
is recommended the TI Rechargeable Battery be fully charged before putting the handheld in
extended storage and that it be recharged fully every three months while in storage.
4. Update your TI-84 Plus CE™ handheld Operating System (OS) as new updates become
available. OS updates may contain new programs to optimize TI Rechargeable Battery life.
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Page 3
Charging TI-84 Plus CE™
Handhelds FAQ updated 12/04/2021