Advance Auto Parts offers the Optima YellowTop Dual-Purpose Automotive Battery, model no. D51R, for $189.99. Coupon code "WD30" cuts it to $139.99. With free shipping, that's the lowest total price we could find by $7, although we saw it for $3 less in February. This battery purports to last up to twice as long as normal car batteries and recharge faster, is completely spillproof, and can withstand 15x more vibration than a normal battery.