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frontpage Posted by un_plug • May 25, 2023
frontpage Posted by un_plug • May 25, 2023

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

(Valid In-Store Only)

$30

$60

50% off
Costco Wholesale
99 Comments 70,556 Views
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Deal Details
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

Written by RevOne | Staff
  • 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.

Original Post

Written by un_plug
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
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

Written by RevOne | Staff
  • 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.

Original Post

Written by un_plug

Community Voting

Deal Score
+61
Good Deal
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Top 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.

99 Comments

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May 25, 2023
1,197 Posts
Joined Mar 2010
May 25, 2023
davedumontier
May 25, 2023
1,197 Posts
great deal.
May 25, 2023
2 Posts
Joined Nov 2018

This comment has been rated as unhelpful by Slickdeals users.

May 25, 2023
3,263 Posts
Joined Feb 2016
May 25, 2023
dazedxxx
May 25, 2023
3,263 Posts
This is about what I paid for it 10yrs ago...great price.
May 25, 2023
141 Posts
Joined Oct 2009
May 25, 2023
joesstripclub
May 25, 2023
141 Posts
Bought one of these and it stopped charging within 6 months. Bought a couple Noco chargers and have been happy with them.
5
May 25, 2023
3 Posts
Joined Nov 2017

This comment has been rated as unhelpful by Slickdeals users.

May 25, 2023
6,459 Posts
Joined Oct 2018

This comment has been rated as unhelpful by Slickdeals users.

May 25, 2023
3 Posts
Joined Nov 2017
May 25, 2023
palacekeeper
May 25, 2023
3 Posts
Quote from palacekeeper :
Shows full price so I guess the deal is dead?
Sorry missed the details about in store only
2

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May 25, 2023
1,177 Posts
Joined Nov 2009
May 25, 2023
OxyGen87
May 25, 2023
1,177 Posts
How do I determine if my car battery is AGM or lithium?
1
4
May 25, 2023
1,177 Posts
Joined Nov 2009
May 25, 2023
OxyGen87
May 25, 2023
1,177 Posts
Quote from joesstripclub :
Bought one of these and it stopped charging within 6 months. Bought a couple Noco chargers and have been happy with them.
Costco return policy ftw

Return that sucker and get your money back
1
May 25, 2023
542 Posts
Joined Sep 2016
May 25, 2023
crayboi
May 25, 2023
542 Posts

Our community has rated this post as helpful. If you agree, why not thank crayboi

Quote from OxyGen87 :
How do I determine if my car battery is AGM or lithium?
Your car battery is most likely flooded. So, put it on the AGM/flooded setting.

Lithium wouldn't be a normal car or boat/motorcycle/atv battery.
1
May 25, 2023
1,265 Posts
Joined Sep 2018
May 25, 2023
gathermewool
May 25, 2023
1,265 Posts

Our community has rated this post as helpful. If you agree, why not thank gathermewool

Quote from Wavy-Nife :
The heck does this do?
Costs 1/2 a battery 50% off so what's the savings?
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.
5
Original Poster
Pro
May 26, 2023
5,688 Posts
Joined Dec 2007
May 26, 2023
un_plug
Original Poster
Pro
May 26, 2023
5,688 Posts

Our community has rated this post as helpful. If you agree, why not thank un_plug

Quote from Wavy-Nife :
The heck does this do?...
Right there is the title of the item, used to charge and maintain batteries.
Common usage is to hook up motorcycle/marine/lawn mower batteries during winter storage.
Charge a car battery that has been sitting around for a while.

In my instance we have a 2nd car we do not use everyday- so during those especially cold winter snaps I will hook it up to the car's battery the day before, so I know it has a full charge to start in the morning.
1
May 26, 2023
806 Posts
Joined Dec 2012
May 26, 2023
crusadertwin
May 26, 2023
806 Posts
These are great for maintaining marine batteries over the winter. I have 4 batteries, 2 deep cycling and 2 starters. If I let them go for the 5 or 6 months in the winter with no maintaining I'd loose 500 worth of batteries........
May 26, 2023
2,121 Posts
Joined Dec 2018
May 26, 2023
HonestMammoth473
May 26, 2023
2,121 Posts
Great price, but like a few others above mine failed very quickly. I replaced it with a NOCO Genius and have had no issues with that one.
1

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May 26, 2023
309 Posts
Joined Mar 2013
May 26, 2023
jbones
May 26, 2023
309 Posts
Mine lasted a few years until it shorted out whe two wires suddenly were touching just before the control box sending sparks flying. It was fun and discovered that it was a faulty cord insulator that had broken in the cold.

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