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Battery Tender 021-0123 Battery Tender Junior 12V Battery Charger | 
| Brand: Deltran
Category: Automotive Parts and Accessories
List Price: $39.95
Buy New: $15.90
as of 3/11/2010 05:26 CST details
You Save: $24.05 (60%)
New (30) from $15.90
Seller: BUILDORBUST
Rating:  279 reviews
Color: Black
Media: Misc.
Size: 12V Model
Shipping Weight (lbs): 20
Dimensions (in): 8 x 4 x 9
MPN: 210123
Model: 021-0123
UPC: 734357000030
EAN: 0734357000078
Availability: Usually ships in 1-2 business days
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| Features:
| • | Spark proof during lead connection, reverse polarity protected and includes a 12-foot output cord and 5-year warranty | | • | Perfect for charging all 12-volt lead-acid, flooded or sealed maintenance free batteries (AGM and gel cell) | | • | Complete 4-step charging program (Initialization, Bulk Charge, Float Mode) allows for optimization of battery power, without overcharging | | • | Automatic charge cycle functionality switches to float mode after fully charging the battery | | • | Solid state two color LED indicates stage of charger |
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| Editorial Reviews:
Product Description
- Fully automatic two-stage lead-acid battery charger
- Trickle charger assures batteries are maintained after charging
- Ideal for all lead-acid, sealed maintenance-free and gel cell batteries
- On 12V models, after full 14.4VDC charge is reached, converts to float charger and monitors battery at 13.2V; when voltage drops below 12.6VDC, charger resumes charging back to 14.4VDC
- On 6V models, after full 7.2VDC charge is reached, converts to float charger and monitors battery at 6.6V; when voltage drops below 6.3VDC, charger resumes charging back to 7.2VDC
- Two-color LED indicator
- Spark-proof; reverse polarity protected
- 12' output cord and quick-connect harness
- Optional pouch for safe and easy storage or transportation
Amazon.com Product Description
The Battery Tender Junior 12-volt/75-amp battery charger is the small and simple solution to the challenge of keeping vehicle batteries optimally powered when not in use. It is able to charge any lead-acid battery, including standard and sealed AGM and GEL Cell battery types and is also designed to be easy to use in small spaces, to utilize a 4-step charging program and safely function in a fully automatic mode. Taken together this makes the Battery Tender Junior 12-volt charger an excellent means of ensuring that your battery is fully charged and ready to go when you are. 4-step charging with automatic float mode.
View larger. | Charge any lead acid battery, including AGM and gel cell.
View larger. | Safe, 4-step Battery Charging
The Battery Tender Junior 12-volt charger is much more than a trickle charger. It has a "brain". Utilizing a 4-step charging program (initialization, bulk charge, absorption mode and float mode), it allows you to simply connect the charger to a battery, either in or out of a vehicle, and forget about it until you are ready to put the battery to work. Like all Battery Tender chargers, at the end of the regular charger cycle it automatically switches its output voltage to a safe, 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 the battery. If/when the battery voltage drops too far under load, output power resumes and the charging cycle begins again. The unit also features sparkproof connectors, short circuit and reverse polarity protection, an easy to understand charging status indicator consisting of a single LED, and almost no current draw from batteries connected to it. Key Features: - Perfect for all lead-acid, flooded or sealed maintenance free batteries (AGM and gel cell).
- Complete 4-step charging program (initialization, bulk charge, absorption mode and float mode).
- Automatically switches to float / maintenance voltage after fully charging the battery.
- If the battery voltage drops too far under load, full charger output power resumes.
- Solid state two color LED indicates stage of charger.
- Spark proof and reverse polarity protected.
- 12' output cord.
- 5 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. | Five-year Limited Warranty
Deltran provides a limited five-year warranty on its Battery Tender Junior 12V Battery Charger 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. |
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| Customer Reviews:
Showing reviews 1-5 of 279
 The Tender Jr. Is The Same As The Tender Plus , Just Less Amps! September 21, 2009
Shawn Murphy (Portland, OR USA)
43 out of 46 found this review helpful
In the analysis of buying a Tender Jr. vs. a Tender Plus, the main issues are time to full charge, battery size, & parasitic draw. The Tender Plus (1.25) will get the job done twice as fast as the Tender Jr. (0.75). Both now are exactly the same architecturally, save it be the charging power. They both are temperature compensated, both are 4 stage, both have the same sophisticated computer chip technology running the charging process, etc... I spoke to The Deltran(The Manufacturer) customer service department on 2 different occasions, making sure I had the facts right. The .pdf file descriptions are updated, but their website as of today's date is not updated yet. The Jr. & The Plus are EXACTLY the same architecturally!!! Because The Plus will bring a battery to full charge twice as quickly as The Jr. will, The Plus has a much better chance at overcoming a parasitic draw on your batteries power. Modern cars have sophisticated electronics that require constant power 24/7. Check all your battery connections & your alternator belt!!! If the connections are not clean & tight, clean it with original coca-cola and a rag / brush, make sure they fit snugly. If your alternator belt is too loose it will not charge your battery properly. If you only want to buy one Tender, don't cheap out, buy The Plus if you have the $ to do so. If you want to buy 2 or 3 Tenders to make sure all your batteries are fully charged, The Jr. will probably do just fine. I personally alternate The Jr. between 3 different cars, if I had it to do over again, I would buy The Plus instead as I am not a patient person. Both models will turn off in 72 hours automatically if a full charge is not reached, & neither will start charging without at least 3 volts stored in the battery before initiating a charge. If you left your lights on for 4 days like I did, get a jump, & drive your car around for 20 minutes before hooking up any Tender to charge your dead battery. Either of these 2 Battery Tenders are the best in the world, don't bother doing anymore research, I have done it all for you. Buy one or buy both!!! I suspect I will be buying The Plus model as soon as an awesome hot deal hits The Plus! These babies save you $$$, time & frustration!!! Get the 25 foot extension if you want to charge a car that sits in the driveway, it's only $12.
excellent gadget & easy to use March 9, 2006
A. Flores (CT)
34 out of 36 found this review helpful
The battery Tender Jr. comes with 1 set of permanent mount ring terminals & 1 set of mini jumper cable clamps so you can hardwire 1 car & use the clamps whereever they are needed.The 1-way quick disconnect on the cord makes things very easy to hook up & unhook. And it is maintaining my battery fine, no more dead car.
Great motorcycle battery tender November 3, 2006
Scooter freak
14 out of 14 found this review helpful
This is an easy to install and use battery tender. If you store your motorcycle during the winter you should use one of these to extend the life of your battery.
HIGHLY RECOMMENED July 6, 2007
S. Anderson (New York)
11 out of 11 found this review helpful
Great Product. I needed a way to keep my minivan battery topped off during extended idle time because my electronic rust protection device was draining the battery. This product does the job beautifully! The only trouble that I ran into initially was that the charger would not start charging because my battery voltage had dropped below 3 volts (this is a safety feature built into the unit). Once I got the voltage up above 3 volts (by briefly attaching jumper cables to another vehicle), it charged just fine. It took a few hours initially, but now I keep the battery connected while the vehicle sits in the garage.
What I need for my ATV February 28, 2008
Phil of Halfway
8 out of 8 found this review helpful
This charger is perfect for keeping the charge on my ATV that I use for plowing. I need to be assured I can get my plow accounts taken care of and can't afford a "no start". I had bought a new battery, so I thought I'd not have to worry. Not so. Very cold mornings it just wouldn't have enogh charge to start. Now there is plenty of power for a quick start. Easy to install taking only a few minutes to attach to the battery. The plug-in cord is long enough for my needs (~8') without needing an extension cord. The only way to go to be assured of a start every time.
Showing reviews 1-5 of 279
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