+wolhess Posted August 28, 2022 Share Posted August 28, 2022 TI-74 Basicalc and TI-324 printer endurance test for more than 9 months Hello, everyone, On September 22nd, I put new batteries in the TI-74 computer and TI-324 printer and loaded a small test program onto the 8K Ram card. I wanted to test how long a set of batteries can operate the small system in standby. For this purpose I switched on the TI-74 several times a month, started the program and printed out a text line "Test on date". I was able to do that for a period of more than 9 months. The system ran until July 30, 2022 and then showed an I/O error after printing. The printer image also became very pale, as can be seen on the printout. The TI-74 still ran without problems, but the printer battery was too weak to use the printer. I replaced the batteries in both devices and ran the test again. Let's see if the devices will be ready for operation for a second time. I expect the result in April/May 2023. Here is the documentation of the test on the printout: 3 Quote Link to comment Share on other sites More sharing options...
+dhe Posted August 28, 2022 Share Posted August 28, 2022 Carbon Zinc, Alkaline or Lithium? Quote Link to comment Share on other sites More sharing options...
+wolhess Posted August 28, 2022 Author Share Posted August 28, 2022 4 hours ago, dhe said: Carbon Zinc, Alkaline or Lithium? I used normal Alcaline batteries from a discounter. 1 1 Quote Link to comment Share on other sites More sharing options...
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