Chains, Ropes, and Slings Test II Source: Questions and answers from the National Safety Council Progress Indicator: Question 6 of 22 6.  When the battery life is nearing its end, the following occurs. (answer the question for your gas instrument) For the iTX, with a minimum of 30 minutes of battery life, the unit will emit a periodic tone. For the MX6 iBrid, if the remaining runtime is less than 30 minutes, "Low Battery" is displayed. Choices: True False