Walmart offers the Schumacher 10/2 Fully Automatic/Manual Dual-Rate Car Battery Charger
for $42.80. Opt for in-store pickup
to cut it to $40.95
. That's $9 less than our mention from last September and the lowest price we could find by about a buck. It features jumpers, two output voltages, overcharge protection, and charges a battery fully in three to five hours.