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2. Wikipedia, the free encyclopedia

   en.wikipedia.org/wiki/Main_Page

   Wikipedia is written by volunteer editors and hosted by the Wikimedia Foundation, a non-profit organization that also hosts a range of other volunteer projects : Commons. Free media repository. MediaWiki. Wiki software development.

3. Solar-powered flashlight - Wikipedia

   en.wikipedia.org/wiki/Solar-powered_flashlight

   Solar-powered flashlight. Solar powered flashlights ( American English) or solar powered torches ( British English) are flashlights powered by solar energy stored in rechargeable batteries. Most of these flashlights use light-emitting diodes lamps [1] [2] since they have lower energy consumption compared to incandescent light bulbs.

4. Opus card - Wikipedia

   en.wikipedia.org/wiki/Opus_card

   Opus (stylized as OPUS) is a rechargeable, dual interface (contact/ contactless) stored-value smart card using the Calypso Standard and is used by major public transit operators in Greater Montreal and Quebec City, Quebec, Canada. [1] [2] [3] It complies with the ISO/IEC 14443 standard for smartcards [4] and can be read by smartphones with an ...

5. Thin-film lithium-ion battery - Wikipedia

   en.wikipedia.org/wiki/Thin-film_lithium-ion_battery

   The thin film lithium-ion battery is a form of solid-state battery. [1] Its development is motivated by the prospect of combining the advantages of solid-state batteries with the advantages of thin-film manufacturing processes. Thin-film construction could lead to improvements in specific energy, energy density, and power density on top of the ...

6. Prepaid card - Wikipedia

   en.wikipedia.org/wiki/Prepaid_card

   Prepaid credit card, a card that debits money from an associated account that ordinarily uses a signature rather than a PIN for verification. Stored-value card, a card that has a monetary value that is recorded as data on the card itself, and thus can be used without online access to an associated account. Category: Disambiguation pages.

7. T-money - Wikipedia

   en.wikipedia.org/wiki/T-money

   T-money is a rechargeable series of smart cards and other "smart" devices used for paying transportation fares in and around Seoul and other areas of South Korea. T-money can also be used in lieu of cash or credit cards in some convenience stores and other businesses.