6/24/2013

Texas Instruments TI-30X IIS solar powered calculator

FYI - the TI-30X IIS solar powered calculator has a CR2025 lithim coin battery on the insider to hold the solar charge. Ultimately, this battery will fail, but it can be replaced by removing the four screws holding the front and the back of the calculator together. As of this date, replacement CR2025 lithium coin batteries are available from Amazon, Sony CR2025 Lithium Coin Battery, for as little as $1.46.