Battery Tender Jr: 5 Best Reasons To Buy

You are looking for a battery tender/maintainer for your motorcycle, garden tractor, classic car, etc. and you wonder what’s the best choice for you. It’s a very common question and this article is designed to show you why a Battery Tender Jr may be your best choice.

Battery Tender Jr Reasons

Take a look at our 5 best reasons below and keep them in mind when making your choice:

Battery Tender Jr Logo

#5 – Deltran Battery Tenders Name:

Deltran Battery Tenders are the official authorized manufacturer of these battery charger /battery maintainer brands:

BMW, Harley-Davidson, Lotus, Mini, A-A-A, CAA, National Corvette Museum, Drag Specialties, Parts Unlimited

#4 – Microprocessor Controlled and Fully Automatic

Like its bigger brother, the Battery Tender Plus, the Battery Tender Jr has a built-in computer or brain that completely controls the charge process and makes it fully automatic. It is not simply a maintainer. It will correctly charge your battery and then automatically switch to a maintenance/float mode.

#3 – Compact, Lightweight, and Easy To Use

If you have a small space in which to do your charging or don’t want to lug around 14 lbs of charger and then try to find a place to locate it, the Battery Tender Junior is perfect for you. You need to think about where you are going to locate the charger and how much space you have for it. Chargers can be simply a pain underfoot in a garage or storage facility. If you don’t have a lot of room, you should definitely consider the Jr. Great as a car, truck, or motorcycle battery tender, it also has a 12 ft output cable for easier placement. Do you want a charger that you have to do a lot of steps in order to monitor the charging process or requires complicated setup with many decisions? The answer is almost always an emphatic no! Battery Tender Jr is fully automatic including all of its steps so that you don’t have to think about it. Just connect and forget!

Battery Tender Jr Video

#2 – Complete 4-Step Charging Program

Even in this small package, your Deltran Battery Tender Jr microprocessor controls a 4-Step Charging program that includes Initialization, Bulk Charger, Absorption Mode, and Float Mode.

battery tender jr

This 4-Step process will completely, reliably charge and then maintain your lead-acid, flooded or sealed maintenance-free battery (including AGM and Gel Cel).


#1 – Safe and Protected

The charger comes with solid state two-color LEDs to indicate the stage that the charger is in so in case something were even to go wrong you have an indication. If the battery voltage drops too far under load, the full charger output resume to bring the battery back to full charge. The Battery Tender Jr is spark proof and provides reverse polarity protection. The charger is protected by a 5 year warranty giving you the confidence that the company backs up what they sell.


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Battery Tender Jr Comparison Chart

TitleBattery Tender 021-0123 Battery Tender Junior 12V Battery ChargerBattery Tender 021-0128 Battery Tender Plus 12V Battery ChargerBattery Tender 800 Waterproof 12V Battery ChargerNOCO Genius G750 6V/12V 750mA Amp Smart Battery Charger and MaintainerBlack & Decker BM3B 6V and 12V Battery Charger / MaintainerCharge Master Automatic Battery Charger, Maintainer & Conditioner
FeatureSpark 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
Solid state two color LED indicates stage of charger; a quick connect harness for use in hard to reach areas
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) that maintains batteries at full charge without overcharging via its 4-step charging system
Automatically switches to float/maintenance mode voltage after fully charging the battery
Temperature compensated to ensure optimum charge voltage according to ambient temperature, and spark proof and reverse polarity protected; 10-year limited warranty
Spark proof and reverse polarity protected; protected by a 3-year limited warranty
Designed for use on all AGM sealed maintenance free, lead calcium, and flooded batteries
100% waterproof and ultraportable at a size not bigger than a computer mouse
Complete 3-step charging program (initialization, bulk charge, and float mode) for maintaining optimal performance levels without over charging
Automatically switches to float/maintenance voltage after fully charging the battery
.75 Amperes Smart Battery Charger for 6-volt and 12-volt batteries; charges and maintains all types of lead-acid batteries from 1.2-30Ah, including Wet, Gel, MF, and AGM
Designed for safety; safe for anyone to use; does not generate sparks, and protects against reverse battery hookup, short circuit, open circuit, overheat, overcurrent and does not overcharge the battery
Keeps batteries charged and maintained; constantly monitors the battery to provide optimal battery performance, and extend battery life
Auto-Memory; Returns to the last selected charge mode when restarted for continuous charging
The most advanced charger ever; it features innovative and advanced technology that makes charging easy and simple. the vosFX Processor built inside every charger makes important charging decisions so you don't have to; it is the safest, most effective charger you may ever use
Battery Maintainer for use on 6V & 12V battery systems
Easy connection to vehicle battery using the included battery clips, O-ring terminals or vehicle DC plug
High-frequency smart charging technology keeps batteries at optimal charge
Automatically switches between charging mode and float mode monitoring
Built-in mounting bracket
Selectable amperage: 2, 4, 6 Ah
Battery thermal run away & overload protection
Soft start, gentle ramp-up constant current rate during bulk charge
Plug-N-Play connectors
Selectable battery type: WET, GEL, AGM, Calcium Battery rejuvenation (desulfation) function
Warranty5 year material and workmanship10 year material and workmanship3 year material and workmanship5 Year Limited Warranty
Height9 inch11 inch10 inch4 inch9.75 inch6.5 inch
Weight1.8 pound2.3 pound3.2 pound1.9 pound1.95 pound2 pound
Width4 inch4 inch4 inch10 inch3 inch2 inch
Length8 inch11 inch10 inch10.5 inch5 inch3.5 inch
Rating4.7 out of 5 stars4.7 out of 5 stars4.6 out of 5 stars4.6 out of 5 stars4.4 out of 5 stars5.0 out of 5 stars
ReviewsRead ReviewsRead ReviewsRead ReviewsRead ReviewsRead ReviewsRead Reviews
LinkMore InfoMore InfoMore InfoMore InfoMore InfoMore Info

Product prices and availability are accurate as of Jul 8 0:14:27 UTC but are subject to change. Any price and availability information displayed on the merchant site at the time of purchase will apply to the purchase of this product.

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I hope this article has been helpful to you! I have tried to give you some great reasons for choosing the Battery Tender Jr but, ultimately it’s just information to help you make a decision.

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  1. Mark Ridgeway

    Yes, if it’s a Battery Tender Jr, it’s fine to leave it connected as long as you need to.