Battery Tender 021-0123 Battery Tender Junior 12V Battery Charger

More Images +	Product Rating (321 reviews) Read / Write	Model #: 021-0123 Brand: Battery Tender Best Price: $15.90

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Product 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

Product Description

Battery Tender Junior 12V Battery Charger is much more than a trickle charger. It has a brain, is lightweight, compact, fully automatic and very easy to use especially in small spaces. This battery charger will keep the battery fully charged so that it is ready to go always. It has a microprocessor controlled fully automatic charger and maintainer and is designed to extend the life of any lead acid battery commonly used in automobiles, motorcycles, ATVs, personal watercraft, RVs, boats, airplanes, golf carts, back-up generator systems, etc. Any vehicle or battery-operated piece of equipment not used on a daily or regular basis is a candidate for a Battery Tender charger. The advanced technology will bring the battery back to a full charge without overcharging and then float or maintain the battery for an indefinite period of time. The Battery Tender Junior comes equipped with alligator clips and ring terminals for easy hook up. An optional 25 feet extension cord (part number 081-0148-25) is sold separately.

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.

The Deltran Battery Tender Junior 12V Battery Charger with alligator clips, ring terminal, output cord

4-step charging with automatic float mode.
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Charge any lead acid battery, including AGM and gel cell.
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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
Charger Models	(Volts)	(Amps)	Charging Software*/ Battery Type	AC Voltage/ Frequency Input
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.

	Product Reviews Write a Review Total Reviews: 321 Review Page: 1 of 65 Next
	Very Good Product I previously owned the larger amperage unit that I used for many years. It worked flawlessly. But it lacked the output protection the newer unit has. When it was accidentally destroyed by a shorted battery I opted for the smaller capacity replacement. So far, I'm not disappointed. The Battery Tender Jr has performed exactly as specified, and has been working continuously for almost two months. I have two vehicles and switch back and fourth driving each. Sometimes one vehicle might sit for three or four weeks without being started. So I connect the tender and let it run continuously to keep the battery charged. This is especially important in winter when Northern Ohio temperatures can hover around Zero for many days. The tender takes just minutes to remove or attach using the battery clips, and my unused vehicles battery is always fully charged and ready to go. I also have a Yamaha Big Bear ATV. The battery on the Bear is difficult to get at, so I permanently attached the extra spade lug cable that comes with the tender to the Bears battery. To charge, I just unplug the cap on the free end of the cable, attach the tender, and let it run. I would not hesitate to recommend this unit for the purpose it was designed. Excellent Battery Tender I bought this for my motorcycle to use during the winter season when I don't ride that much. I bought it based on popularity and many local autoparts stores carry them. They work great to keep the small battery fully charged at all time and ready to go. This is much cheaper than keep replacing the battery which cost 2-3 times more. I don't not believe they are designed for automobile battery, so you will be disappointed if you're going to use on the car. I would highly recommended this product for motorcycles, quads, mopeds. Good Charger for the money I recently purchased a 1977 Honda CT90 that had been restored. Since it is 6 Volt system I needed a charger. These bikes will not run w/o a properly charged battery. I worked well. Battery tender does the job This is a nicely made device. I rest assured that the cars will start. It takes the headache and embarrassment of trying to jump the motor in front of a them. Now I rest assured that they will start. I have a 1974 Ford Mustang that are in my driveway waiting to be driven. My problem was keeping the car batteries in them charged. If I didn't start them like once a week, then the batteries would not have enough charge in them to start the motors. So to fix the problem I bought one of these Battery Tenders, one for each car, and hooked them up to extension cords running to my garage. Because they are out in the weather I also put drip-loops on each Tender which are sitting inside the engine bays) to shed any water that may drip down the extension cords and onto the Tenders themselves a good note on safety.I have had the Tenders hooked up since the summer and they work perfectly. They have a multi-color flashing light on them to inform you of the charge status of the battery. When it is steady red it is charging, when it is steady green it is maintaining, and when it is orange it means that the battery is either bad or that there is a bad connection. There is a written key to the LED embossed on the Tender as well as in the instruction manual. The manual is very informative and explains the charging modes The Tender comes with two kinds of hook-up leads, a alligator clip type, and a top-post terminal type ( that can be attached under the terminal nut. The five year warranty is a bonus. When I am showing either of my cars to a prospective buyer and they want to hear the motor. Works Satisfactorily I have an old sports car that gets dirven occasionally and needed a way to conveniently keep the battery charged. In this car the battery is located in the trunk and has a cover held on with two knirled plastic nuts. It's a pain to take the cover off every time you need to charge the battery, so I was very interested in the leads that are included with this unit that allows you to keep the leas on the battery and disconnect the charger. This lets me keep the plastic cover on the battery and the leads just stick out on one side, a very neat arrangement. The usnit seems to be working fine, after a couple of days the light on the unit went from Red (charging) to green (maintaining fully charged battery) mode. My only real dissapointment is that the unit was made in China.

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