Walmart offers the Stanley FatMax 8-amp Battery Charger bundled with an Extension Cord for $24.98. Opt for in-store pickup to dodge the $5.99 shipping fee. That's $13 under the lowest price we could find for a similar model. It connects with battery clamps, battery ring terminals, or a 12-volt DC plug and features reverse polarity lights that warn against an improper connection.
You don't have to join Sam's Club to shop its warehouses or website. Consider these alternatives before you buy or renew a membership.