Ace Hardware cuts $4 off battery purchases of $12 or more via coupon code "BATTERYDAY". That's the best discount we've seen on batteries from Ace Hardware and puts several items at price lows. Shipping starts from $5.56, or choose free ship-to-store pickup. Sales tax is added where applicable and some restrictions may apply. Coupon expires February 19.

A best bet is the Duracell CR-V3 Ultra Lithium Photo Battery (pictured) for $12.49 before the above coupon, $8.49 after. Opt for free ship-to-store pickup to avoid the $8.36 shipping charge. That's the lowest price we could find by $2.