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Battery Tender Plus

Catalog Item # 46405
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Microprocessor-controlled 1.25-amp Battery Tender Plus will charge as fast as or faster than any 3-amp charger available, and will keep battery fully charged so that it is ready to go when you are!
Fully charge lead-acid, flooded or sealed maintenance-free batteries, including AGM and gel cell batteries, and maintain them at the proper storage voltage without the damaging effects caused by most trickle chargers--especially sulfation, the number one cause of battery failure.

Four-Step Charging Process

Step 1: Initialization-Monitor circuit verifies appropriate battery voltage levels and good electrical continuity between battery and charger DC output.

Step 2: Bulk Charge-Constant current at full power. Bulk charge ends at approximately 75% to 80% of full battery recharge.

Step 3: Absorption Charge-Constant voltage at absorption level conditions battery for optimum performance. Absorption charge ends when battery charging current drops below the optimum recharge threshold or the absorption timer expires.

Step 4: Float Charge-Constant voltage at float/maintenance level keeps battery fully charged and maintains high specific gravity. Full charge reset monitor protects battery against excessive appliance current draw while charging. Float charge continues indefinitely.


  • Microprocessor technology governs automatic switching to protect battery from damage
  • Temperature-compensated to ensure optimum charge voltage according to ambient temperature
  • 72-hour safety timer protects marginal batteries from further damage
  • Automatically switches from full charge to float charging mode
  • Reverse polarity protection--red and green lights flash alternately to alert you
  • Spark-proof even when leads touch
  • LED state-of-charge indicator
  • 6' output cord
  • Includes quick connect harness for hard-to-reach areas
  • Mfr. 10-year warranty
Charge Times:

Motorcycle, Boat, ATV battery (10 - 20 Ah) 4-8 Hours
Truck Trolling Motor Battery (70 - 95 Ah) 28-38 Hours
RV (100 - 155 Ah) 42-62 Hours
RV (160 - 185 Ah) 64-74 Hours
For Maintenance only.
RV (190 - 215 Ah) 76-86 Hours
For maintenance only.

This item qualifies for Product Protection coverage! Protect Your Investment! Product Protection eliminates out-of-pocket expenses and protects against costly product repairs or replacement. We’ll cover 100% parts and labor for up to two years following the expiration of your manufacturer’s warranty. Warranty service is available at any Camping World SuperCenter.

Technical Specs

Tech Specs

Weight: 2.75 lbs.

Manufacturer: Deltran Usa Llc

Mfg Part #: 021-0128

Tech Notes:

  • [email protected]
  • 120-volt, 60 Hz
  • Output current 1.25 amps
  • Output voltage 12 volts
  • UL listed
  • 4.875"L x 3.25"W x 2.875"H

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Battery Tender Plus: Customer Reviews

Camper's Choice Rating

(5 Based on 9 Reviews)

Reviewed by 9 customers


Excellent produit.

0 out of 0 people found this review helpful.
November 21, 2013
Efficace et fiable.
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Everybody should own one.

0 out of 0 people found this review helpful.
October 02, 2013
I have used the Battery Tender Plus for many years. I use several of these that I use on my Motorcycle, riding lawn mower, Truck and RV. With the easy coupler these can be easily connected and disconnected. I never have dead batteries. Extends the life of your batteries.
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Got to have Battery Tender Plus

0 out of 0 people found this review helpful.
July 17, 2013
We are retired folks. My wife has an older car, she likes. But she doesn't drive much now. I use the Battery Tender to keep a trickle charge on her car and alternate on our old 1988 RV. It works great. We were buying batteries before their expiration a lot of times. Now I think this will save us some money, and some won't start headaches.
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Works Great

0 out of 0 people found this review helpful.
April 02, 2013
I live in Montana so saving battery life over the harsh winters is important to me. I purchased the Battery Tender Plus late last year and recently used it to assure my two Marine RV batteries were ready for the Spring and Summer. In less than 24 hours both batteries were fully charged and ready to go back in my 5th wheel. Worked just as advertised with no surprises.
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worked great for9 months

0 out of 0 people found this review helpful.
October 04, 2011
We purchased the battery tender and had it installed the 28th of January of this year. It worked perfectly for the few months it was on here and then quit . We are going to have another one installed and hope it will last longer.
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Great Product

0 out of 0 people found this review helpful.
February 11, 2011
My truck, which is used for towing a trailer, does not get used often. After having a dead battery twice, I purchased the Battery Tender Plus a year ago. When the truck is not going to be used for awhile, I hook it up and no longer have to worry about it starting right up.
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Keeps Your Batteries in Top Shape

0 out of 0 people found this review helpful.
January 29, 2010
I keep this charger continuously connected to my tow vehicle's batteries when not being driven for more than a couple of days. It keeps the batteries fully charged without any worry of overcharging. My tow vehicle's batteries are now 9 years old and still performing like-new. This charger is high quality and well constructed... worth the cost and cheap insurance for your batteries.
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Battery Tender

0 out of 0 people found this review helpful.
November 08, 2009
On occasion, I've connected this charger to my two tractors, car and pick-up with the batteries remaining hooked up. For these larger batteries, this device works extremely well and in a surprisingly short time. For the smaller batteries in my Honda ATV & Honda EU3000is this charger is MANDATORY as the larger automobile type chargers will damage said batteries. I connect several batteries (large & small) in parallel on my workbench for my 12 week stay in Barbados. It works at keeping them charged but mainly to eliminate sulfation which equals longer battery life.
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Must have!

0 out of 0 people found this review helpful.
July 01, 2009
We use these all the time on our motorcycles, riding lawn mowers, tractors and more recently on our RV batteries. It is a must have if you have any battery operated equipment that sits unused for a period of time (like RV in storage, winter storage of riding mowers, etc).
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Q & A

Product Question & Answer

2 questions : 2 answers
Expand All
Does the Battery Tender Plus charge deep cycle RV batteries?
1 answer(s)
Can this maintain systems with dual 12v batteries?
1 answer(s)

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