Walmart offers the Optima RedTop 25 Automotive Starting Battery for $151.01 with free shipping. That's $3 under our expired mention from six days ago and the lowest price we could find today by $25. This battery purports to have the strongest 5-second starting burst, to last up to twice as long as normal car batteries, to recharge faster, is completely spillproof, and can withstand 15x more vibration than a normal battery.

Update: The price has increased to $154.31.