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Select Costco Stores: Battery Tendern 4.5-Amp Car Battery Charger & Maintainer

$30
$59.99
(Valid In-Store Only)
+60 Deal Score
59,770 Views
Select Costco Wholesale Stores (link for reference only) [store locator] have for their Members: Battery Tendern 4.5 Amp SuperSmart Automotive Battery Charger & Maintainer (022-0370-DL-CA) on sale for $29.97 valid for In-Store Purchase Only where stock permits (search for / request Costco item # 1510107).

Thanks to community member un_plug for finding this deal.

Product Details:
  • Selectable 4.5 Amp charging for 12-Volt or 6-Volt batteries
  • 120V at 50/60 Hz Input
  • Ideal for AGM, Flooded, Gel, and Lithium Batteries
  • Weather Resistant IP65 Rating
  • AC Power Cord Length: 6-ft
  • DC Output Cord Length: 5-ft
  • 5-Year Manufacturer Warranty
  • Includes alligator clips and ring terminal accessory cables

Editor's Notes & Price Research

Written by
  • About this deal:
    • Offer valid for a limited time while supplies last.
    • This offer is $16.38 lower (35% savings) than the next best available price from a reputable merchant with prices starting from $46.35 and higher.
  • Ratings & Reviews:
    • Rated 4.8 out of 5 stars based on almost 1,300 customer reviews.
  • Refer to the forum thread for additional details and community discussion.
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Created 05-25-2023 at 06:52 AM by un_plug
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Featured Comments

Lead acid batteries like to be 100% fully charged 100% of the time. Now, some people don't drive often and the battery will drop well below 100% and cause degradation (lost capacity and eventual death) due to the formation of sulphate crystals on the surface of the lead plates that literally block the electro-chemical reaction that makes the zoom zooms go zoom.

Furthermore, many modern vehicles purposefully maintain batteries partially charged to save gas. It's pretty dumb since the savings are crap and the affect on the battery is not zero.

So, plug in a maintainer every weekend or once a month and keep that battery healthy. Have a vehicle in storage? Better have a maintainer.
Costco return policy ftw

Return that sucker and get your money back
Bought one of these and it stopped charging within 6 months. Bought a couple Noco chargers and have been happy with them.

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Joined Mar 2010
L5: Journeyman
> bubble2 980 Posts
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davedumontier
05-25-2023 at 07:56 AM.
05-25-2023 at 07:56 AM.
great deal.
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Joined Feb 2016
...confuzed
> bubble2 2,768 Posts
543 Reputation
dazedxxx
05-25-2023 at 10:00 AM.
05-25-2023 at 10:00 AM.
This is about what I paid for it 10yrs ago...great price.
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Joined Oct 2009
L3: Novice
> bubble2 119 Posts
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joesstripclub
05-25-2023 at 10:08 AM.
05-25-2023 at 10:08 AM.
Bought one of these and it stopped charging within 6 months. Bought a couple Noco chargers and have been happy with them.
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Joined Nov 2017
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> bubble2 2 Posts
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palacekeeper
05-25-2023 at 04:44 PM.
05-25-2023 at 04:44 PM.
Quote from palacekeeper :
Shows full price so I guess the deal is dead?

Sorry missed the details about in store only
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Joined Nov 2009
L6: Expert
> bubble2 1,164 Posts
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OxyGen87
05-25-2023 at 04:56 PM.
05-25-2023 at 04:56 PM.
How do I determine if my car battery is AGM or lithium?
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