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Author
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Topic: Backup batteries question
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David Burch
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posted March 24, 2025 02:07 PM
The starPilot 89 Manual states that the back up batteries are CR1616 or CR1620 which is true of the TI-89, but this is not for the TI-Titanium, which uses 1.55V SR44SW or 303 types.
In both calculators, the actual backup batteries called for is stated clearly on the backup battery cover lid inside the main battery cover.
From: Starpath, Seattle, WA
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