Maximum Running Time of N Computers LeetCode solution in JavaScript

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var maxRunTime = function (n, batteries) {
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  let total = batteries.reduce((acc, x) => acc + x, 0);
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  let batts = batteries.sort((a, b) => b - a);
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  let i = 0;
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  while (1) {
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    let average_truncated = parseInt(total / n);
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    let cur = batts[i];
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    if (cur > average_truncated) {
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      total -= cur; // remove all of that batteries charge from the equation
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      n--; // remove the computer from the equation
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      i++;
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    } else {
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      return average_truncated;
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    }
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  }
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};