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Battery Tender 021-0134 10-Bank 12V Battery Management System

4.2 out of 5 stars 24 customer reviews
| 3 answered questions

Price: $531.56 & FREE Shipping. Details
Only 6 left in stock (more on the way).
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  • Simultaneously charges and/or maintains up to 10 12-volt batteries, providing 12 volts/2 amps per charging bank
  • Includes six foot lead with aligator clamps and a 3-year warranty
  • Complete 4-step charging program (initialization, bulk charge, absorption mode and float mode) that maintains batteries at full charge without overcharging via its 4-step charging system
  • Spark-free design via microchip circuitry that will not activate output voltage until clips are correctly connected to battery
  • Reverse polarity protection and a built-in 72-hour safety timer ensures batteries attain float mode status
23 new from $489.60 1 used from $449.68
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$531.56 & FREE Shipping. Details Only 6 left in stock (more on the way). Ships from and sold by Amazon.com.

Frequently Bought Together

  • Battery Tender 021-0134 10-Bank 12V Battery Management System
  • +
  • Ten (10) Battery Tender 081-0148-25 25' Quick Disconnect Extension Cable
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  • Ten (10) Battery Tender 081-0069-6 Ring Terminal Harness with Black Fused 2-Pin Quick Disconnect Plug
Total price: $651.75
Buy the selected items together


Product Information

Size:--  |  Color:Black

Technical Details

Brand Battery Tender
Model 021-0134
Item Weight 51.6 pounds
Product Dimensions 25 x 13 x 13 inches
Item model number 021-0134
Discontinued by manufacturer Yes
Manufacturer Part Number 210134
OEM Part Number 021-0134
ABPA Partslink Number 13
Amperage 2 A
Voltage 12

Additional Information

ASIN B000NCOKVU
Customer Reviews
4.2 out of 5 stars 24 customer reviews

4.2 out of 5 stars
Best Sellers Rank #86,207 in Automotive (See top 100)
#203 in Automotive > Tools & Equipment > Jump Starters, Battery Chargers & Portable Power > Battery Chargers
#866 in Automotive > Replacement Parts > Batteries & Accessories
Shipping Weight 29.4 pounds (View shipping rates and policies)
Domestic Shipping This item is also available for shipping to select countries outside the U.S.
International Shipping This item is not eligible for international shipping. Learn More
Date First Available December 1, 2006

Warranty & Support

Warranty, Parts:Parts
Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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Product Description

Size: -- | Color: Black

Product Description

The Battery Tender 10-Bank charger is a top-of-the-line 12 volt 2.0 amp per circuit charger, perfect for automotive, motorcycle and marine repair and maintainence shops. The 10-Bank uses micro-processor technology in a four-stage charging profile to charge, improve, and float the battery so it is ready when you are. Constant current charging and regulated voltage patterns allow the battery to be recharged fully and safely without the fear of overcharging. The lights above each station indicate the stage of charge so there is no guesswork in the shop. The 10-Bank BatteryTender is used in battery rotation, when a battery is removed from service during repair or in preparing batteries for sale.

Amazon.com

The Battery Tender 12-volt/2-amp 10-Bank Battery Management System is designed for commercial use in keeping up to 10 12-volt batteries simultaneously charged and maintained, each at its proper storage voltage without the damaging effects caused by some trickle chargers. Compatible with all AGM (absorbed glass mat), sealed maintenance free and flooded batteries commonly found in everything from some automotive/farm equipment to motorcycles, ATV’s, and personal watercraft, this lightweight, microprocessor controlled unit provides safe, constant, 4-step charging current for every vehicle stored in your shop.

The Deltran Battery Tender 12-volt/2-amp 10-Bank Battery Management System with alligator clips and output cords
Simultaneous charging of up to 10 separate batteries.
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Graph and detail of the 4-step charge cyle for the Deltran Battery Tender 12-volt/2-amp 10-Bank Battery Management System
The 4-step charge cycle detailed.
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Smart, Commercial Grade 4-step Battery Charging
The first fully automatic, constant-current battery charger designed to charge and/or maintain up to 10 12-volt batteries simultaneously at 2 amps, the Battery Tender 12-volt/2-amp 10-Bank Battery Management System utilizes a 4-step charging program (initialization, bulk charge, absorption mode and float mode), that allows users to connect the charger to up to 10 batteries, either in or out of a vehicle, with the confidence that all are being maintained at optimal performance levels. This makes it extremely useful for battery rotation, where a battery is removed from service during repair or in preparing batteries for sale. It is also safe for your batteries, with the built-in ability to automatically switch its output voltage to a storage or float level that eliminates the need to worry about the damaging effects of overcharging, and the resulting need to check on the condition of a charging battery. If or when the battery voltage drops too far under load, this same smart technology resumes output power and the charging cycle begins again. The unit also features sparkproof connectors, reverse polarity protection, a 72-hour safety timer that ensures batteries attain float mode status during charging, an easy to understand charging status LED indicator for each charging bank, durable construction and almost no current draw from batteries connected to it.

Key Features:

  • Simultaneously charges and/or maintains up to 10 12-volt batteries.
  • 12 volts/2 amps per charging bank.
  • Maintains batteries at full charge without overcharging via its 4-step charging system.
  • Spark-free design via microchip circuitry that will not activate output voltage until clips are correctly connected to battery.
  • Reverse polarity protection and a built-in 72-hour safety timer that ensures batteries attain float mode status.
  • Six foot lead with alligator clamps included.
  • 3-year warranty.
Charger Models
Output Voltage
Output Current
Charging Software*/
Battery Type
AC Voltage/
Frequency Input
(Volts)
(Amps)
Battery Tender Junior 6V Battery Charger 6V 0.750A 3 Step STD & AGM 120 VAC, 60 Hz
Battery Tender Junior 12V Battery Charger 12V 0.750A 4 Step STD & AGM 120 VAC, 60 Hz
Waterproof 800 12V Battery Charger 12V 0.800A 3 Step STD & AGM 100 to 240 VAC, 50/60 Hz
Battery Tender Plus 6V Battery Charger 6V 1.25A 4 Step STD & AGM 120 VAC, 60 Hz
Battery Tender Plus 12V Battery Charger 12V 1.25A 4 Step STD & AGM 120 VAC, 60 Hz
Battery Tender Plus 12V Battery Charger (Gel Cell) 12V 1.25A 4 Step STD & AGM or GEL 120 VAC, 60 Hz
Battery Tender Twin 800 12V Dual Battery Charger 12V 0.800A 3 Step STD & AGM 100 to 240 VAC, 50/60 Hz
Battery Tender 12V 2-Bank Battery Management System 12V 1.25A 3 Step STD & AGM 100 to 240 VAC, 50/60 Hz
Battery Tender 12V 4-Bank Battery Management System 12V 1.25A 4 Step STD & AGM 100 to 240 VAC, 50/60 Hz
Battery Tender 12V 5-Bank Battery Management System 12V 2.0A  4 Step STD & AGM 120 VAC, 60 Hz
Battery Tender 12V 10-Bank Battery Management System 12V 2.0A  4 Step STD & AGM 120 VAC, 60 Hz
*Note: All Deltran battery chargers will charge all types of lead acid batteries: either flooded (standard STD), sealed maintenance free Absorbed Glass Mat (AGM), or sealed maintenance free gelled electrolyte (GEL) batteries. However, for optimum battery performance in deep cycle applications (for example, running a trolling motor), it is best to chose the Deltran charger that has the charging software specifically designed for the battery type. Fortunately, since the technical staff at Deltran has developed charging software that works equally well for both STD & AGM batteries, the only choice to be made is between 2 models: either STD & AGM or GEL software.

Three-year Limited Warranty
Deltran provides a limited three-year warranty on its Battery Tender 12-volt/2-amp 10-Bank Battery Management System to the original purchaser based on defective material or workmanship. Warranty is void in cases of product misuse, disassembly or modification. Other details regarding warranty limitations and procedures are contained in the Deltran Battery Tender Charger's general limited warranty information sheet enclosed with this product.


Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Size: --Color: Black Verified Purchase
Have only owned the product for a month, but am completely satisfied.
Does everything I would have expected. I collect motorcycles and never remove the batteries. I'm too lazy to move a charger from bike to bike. I've plugged in most of the bikes plus a car that I seldom use in the winter and leave them on. No worries.
Only negative I've found is the leads from the charger to the battery are only 6 feet long. If you require more, you need to purchase a 25 foot extension. 31 feet is much more than I need. Wish I could purchase leads of 10 to 15 feet long.
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Size: --Color: Black Verified Purchase
I bought one of these last year and liked it so much, I bought another.
We use these to charge batteries for clay target throwers.
Since we started using them, we do not have the low battry issues we used to have in the middle of a shoot.
The charger even rejuvinated some batteries that were questionable.
I highly recommend it!!!!!!!
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Size: --Color: Black
I live on a small farm and have many pieces of equipment that have batteries. I was able to remove the batteries and place them on a work bench and charge 10 of them at one time. Plus this unit will keep them at peak level until spring arrives.
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Size: --Color: Black Verified Purchase
Have charged many groups of batteries and everything has worked as advertised. However note that if you battery is dead this charger will not start charging unless it senses 3 volts (safety interlock feature to protect against loose cable ends shorting) so you will need to connect another battery or get it started with another type charger first.
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Size: --Color: Black Verified Purchase
I own 75 acres and have a lot of equipment with 12 volt batteries to maintain it. I have 8 or the 10 charging positions going most of the time, I absolutely think this is a must have in the winter too. I've had many batteries go bad because I don't remember to charge them every now and then during cold months. Now, I just keep them on the charger all winter ad haven't lost a single battery.

I now have a charging station in my garage for 12 volt, 6 volt and 40 volt batteries. very convenient for me. This 12 volt charger is the center piece. The other chargers surround it.
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Size: --Color: Black Verified Purchase
This model works great, but it would not turn on when it was taken out of the box. Deltran wasn't interested in helping and suggested sending back to Amazon. I opened the cover and discovered that the hot wire from the plug was not connected. Found the terminal, wired it up, and it is working fine.
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Size: --Color: Black Verified Purchase
This product works great when it does.

But like the other reviews have mentioned a few of the 10 banks WILL go dead and stop working after a while for me it was 8 months. Having to send it back you'll pay a bench fee. For something that's half a grand and seems to be a common problem you'd think it would get waved hopefully when I send it back they can update it or something to prevent this from happening again.
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Size: --Color: Black Verified Purchase
It is awesome, however with time you wiill see the white plastic inserts begin to fail. Then you lose one or 2 or 3 terminals. Sent in for repairs. It cost me over $100 for repairs. Still the best one on the market though
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