As one of its daily deals, Sears offers the DieHard Battery Charger/Maintainer
, model no. 71219, for $19.99
. Plus, Shop Your Way Max members bag free shipping
. (Not a member? It's free to sign up for a 90-day trial
; otherwise, shipping adds $6.50. In-store pickup is also available.) That's the lowest total price we could find by $4, although we saw it for $3 less last month. This device lets you charge your car battery from inside the vehicle. Deal ends today.