[eschwartz]

What are the contents of that file?

...
All it is doing is checking to see what size should be applied to "_batteryMeterEl.style.marginTop"

Play with the red bit until it looks nice:

#!/bin/sh
SCRIPT=""


SCRIPT=`cat << 'JAVASCRIPT' | tr -d '\n' | sed -e 's,",\\\\",g'
(function () {
  var _batteryMeterId = BatteryState.batteryFillDiv,
      _batteryMeterEl = _batteryMeterId && document.getElementById(_batteryMeterId),
      _currentBatteryLevel = nativeBridge.getIntLipcProperty("com.lab126.powerd", "battLevel"),
      _originalResolveLabel = BatteryState.resolveLabel;

  if (!_batteryMeterEl || !_originalResolveLabel) {
    return;
  }

  /* Text should be WHITE to be visible. */      
  _batteryMeterEl.style.color = "white";
  /* Hack style to set vertical alignment of text. */
  _batteryMeterEl.style.lineHeight = "5.2pt";
  /* Add style for smaller font size. */
  _batteryMeterEl.style.fontSize = "7.2pt";
  /* Background color for hiding the battery */
  _batteryMeterEl.style.backgroundColor="black";
  _batteryMeterEl.style.marginTop="-1.6pt";
  _batteryMeterEl.style.marginLeft="-2pt";
  _batteryMeterEl.style.width="20pt";
  _batteryMeterEl.style.minWidth="20pt";
  _batteryMeterEl.style.height="12pt";
  _batteryMeterEl.style.paddingTop="0.8pt";

  if (_currentBatteryLevel) {
    _batteryMeterEl.textContent = _currentBatteryLevel + "%";
  }
      
  BatteryState.resolveLabel = function () {
    var batteryMeterId = BatteryState.batteryFillDiv,
        batteryMeterEl = batteryMeterId && document.getElementById(batteryMeterId);
        
    _originalResolveLabel();
    
    if (batteryMeterEl) {
      batteryMeterEl.textContent = BatteryState.percent + "%";
    }
  };
})();
`

MESSAGE='{
  "pillowId": "default_status_bar",
  "function": "'${SCRIPT}'"
}'

lipc-set-prop -s com.lab126.pillow interrogatePillow "$MESSAGE"