Hot Deals

[Costco] Battery Tender 4.5amp car battery charger/maintainer - $54.99

  • Last Updated:
  • Nov 2nd, 2020 5:44 pm
Tags:
None
[OP]
Deal Addict
Jun 1, 2008
2169 posts
1848 upvotes

[Costco] Battery Tender 4.5amp car battery charger/maintainer - $54.99

https://www.costco.ca/battery-tender-po ... 95600.html


Battery Tender is a very reputable brand for chargers / battery tender. Its a good price for this unit, you may want one to keep the car battery charged due to lower driving ( for those that may be going out less or working from home now)
Last edited by renegadeavenger on Oct 21st, 2020 3:26 am, edited 1 time in total.
Reason: Title edit
79 replies
Deal Expert
User avatar
Mar 25, 2003
15407 posts
4048 upvotes
Markham
there is also this
https://www.costco.ca/energizer-automat ... 73537.html

4A $42.99
8A $55.99
96TB Mediasonic H82-SU3S2 / 72TB Raid 50 on Mediasonic H8R2-SU3S2
48TB Node 304 / i5-3570 / Server 2016 Essentials
12TB HP Mediasmart EX 495 (E8400, 3.0GHZ, 4GB Mushkin), with Server 2016 Essentials
16TB Qnap TS-459 Pro
Sr. Member
Mar 17, 2014
545 posts
200 upvotes
Vancouver
is this the one that you plug-in to your car battery when you are planning to store your car for sometime??
Deal Expert
Aug 22, 2011
34411 posts
20443 upvotes
Center of Universe
congo80 wrote: is this the one that you plug-in to your car battery when you are planning to store your car for sometime??
Exactly.
Jr. Member
May 5, 2009
156 posts
20 upvotes
I think this is a charger, not a tender?
Deal Expert
Aug 22, 2011
34411 posts
20443 upvotes
Center of Universe
BCguy2 wrote: I think this is a charger, not a tender?
It says battery tender in the description.
What made you think it's a charger?
Member
Jan 2, 2009
366 posts
101 upvotes
Battery tender is the brand. This is a small charger(4.5 amps) that is also a maintainer. You can get cheaper maintainer only (in the 1 amp range).
vkizzle wrote: It says battery tender in the description.
What made you think it's a charger?
Deal Addict
Nov 10, 2018
3588 posts
3691 upvotes
Keigotw wrote: there is also this
https://www.costco.ca/energizer-automat ... 73537.html

4A $42.99
8A $55.99
More isn't better. The formula is 0.2xC, C being the AH of the battery you're trying to charge, (0.2C is the max). I would personally choose the 4A charger so it charges the battery nice and slow which generates the least amount of heat possible which prolongs the battery life itself.
For legal topics and discussions, the opinion, guidance, and thoughts provided are my own and are not considered to be legal advice, in any manner.
Deal Expert
Aug 22, 2011
34411 posts
20443 upvotes
Center of Universe
nanyte wrote: Battery tender is the brand. This is a small charger(4.5 amps) that is also a maintainer. You can get cheaper maintainer only (in the 1 amp range).
"Quickly charge lithium and lead acid batteries. The fully automatic 4 A power tender is a top-of-the-line 12 V or 6 V switchable battery charger, perfect for automotive, motorcycle and marine repair and maintenance shops."
Deal Addict
Aug 27, 2009
1203 posts
1179 upvotes
ELI5? Does this replace just a battery charger?
My old battery booster is comparatively huge, clunky and evidently has no screen. It just has the +/- clamps to connect to the battery terminal.

Does this device just boost/charge cars from the 12V outlet? I never found those effective when a battery is completely dead...
I have a separate charger that plugs in 110V with the clamps as well. It's inherited, 20-30 years old and I see no reason to replace it.
Last edited by lleb13 on Oct 21st, 2020 8:12 am, edited 6 times in total.
Deal Addict
Nov 10, 2018
3588 posts
3691 upvotes
vkizzle wrote: "Quickly charge lithium and lead acid batteries. The fully automatic 4 A power tender is a top-of-the-line 12 V or 6 V switchable battery charger, perfect for automotive, motorcycle and marine repair and maintenance shops."
They're all mostly sort of right and sort of wrong.

A battery tender is not to be confused with a battery charger, but one wouldn't call this device a tender. Tenders are meant to keep a battery's SOC, and a charger is meant to, well, do just that. Most tenders are in the 0.75a to 1.25a range, and chargers are typically 4A>. A typical case of a layperson not knowing this and writing a bad description.

FWIW: https://ama.ab.ca/auto/vehicle-maintena ... ry-tenders (tenders)

In this case, "Battery Tender" is also a brand which just so happens to make tenders and chargers...[sigh].
For legal topics and discussions, the opinion, guidance, and thoughts provided are my own and are not considered to be legal advice, in any manner.
Member
Aug 8, 2010
253 posts
171 upvotes
Quebec
None of theses two mention they can withstand cold climates. These tenders often get brittle if left overnight at -15 c. and crack/break when handled in the morning. Any experience?
Member
Jan 2, 2009
366 posts
101 upvotes
vkizzle wrote: Read the next sentence of your quote.

"Quickly charge lithium and lead acid batteries. The fully automatic 4 A power tender is a top-of-the-line 12 V or 6 V switchable battery charger, perfect for automotive, motorcycle and marine repair and maintenance shops."
Member
Jan 2, 2009
366 posts
101 upvotes
jslabonte wrote: None of theses two mention they can withstand cold climates. These tenders often get brittle if left overnight at -15 c. and crack/break when handled in the morning. Any experience?
Any suggestions on a maintainer that can handle cold climates? The ones I have seen are silent about that.
Deal Addict
Nov 10, 2018
3588 posts
3691 upvotes
jslabonte wrote: None of theses two mention they can withstand cold climates. These tenders often get brittle if left overnight at -15 c. and crack/break when handled in the morning. Any experience?
Higher end battery tenders leverage temperature compensation to adjust the floating voltage. If you don't use one of these, you're likely to damage your 12V battery if you're charging that cold. That said, your question is not in regards to that but of build quality, of which, well, I've never seen any residential ones hold up that well.

That said I would NOT be charging car batteries at that temperature. As a rule of thumb, I always charge in the morning after a car has sat overnight such that the battery is being charged AS the temperature is rising during the day. The temp of the battery must *ALWAYS* be colder than the temp of the charger/battery tender otherwise you risk a floating voltage that's too high.

That said never charge a frozen dead battery. That's a one way ticket to the afterlife...
For legal topics and discussions, the opinion, guidance, and thoughts provided are my own and are not considered to be legal advice, in any manner.

Top