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.

Product Details

• Amazon Sales Rank: #1 in Automotive
• Color: Black
• Brand: Deltran
• Model: 021-0123
• Released on: 2006-12-01
• Dimensions: 9.00" h x 4.00" w x 8.00" l, 1.80 pounds

Features

• Switches to float/maintenance voltage after fully charging the battery
• Battery voltage drops, full charger output power resumes
• Two color LED indicates stage of charger
• 12-foot output cord for better mobility
• Five year warranty

Customer Reviews

excellent gadget & easy to use
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.

Not temperature compensated. Watch out for old 3-step unit.
There are two things you need to consider when purchasing this item.

First, unlike its big brother, the Plus, the Junior is not temperature compensated. To find out more about that, go to batterytender.com, click on the FAQs link on the left and read item #18: "What is Temperature Compensation and how important is it?"

I was concerned about this, as living in the desert as I do, the temperature in my garage is 90 to 130 degrees most of the year and can drop to the 50s in the winter. I inquired about this to Battery Tender support and received this answer: "The Junior is not a temperature compensating unit, however, when the temperature is hotter, the unit will actually charge the battery a bit faster and it will not harm the battery." I don't know what to make of this, especially since compensation is so important according to their FAQ.

The other is to make sure you get the 4-step Junior which replaced the 3-step over a year and a half ago. On the back side of the packaging on the left side look for the reference to "Complete 4-step."

That being said, I've been using a Junior for almost 6 months on my motorcycle so I can't post up my experience as well as others here. I'm hoping it will provide my batteries with more service than the 14-16 months I'm used to.

By popular acclaim and editorial content, the Junior and the Plus have garnered untarnished reputations and withstood the test of time. For maintaining your battery, there really isn't anything else out there.

Great motorcycle battery tender
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.