Battery Tenders

Super Smart Battery Tenders - The Most Advanced Battery Chargers

Battery Charging Has Changed!

Battery Tenders & Chargers can be a cost effective approach to battery maintenance.  Chargers are not inexpensive, but neither are batteries.  A battery that is properly maintained will deliver more years of service.  The track record over the past ten years shows that it is not uncommon for consumers, who were using Battery Tenders & Chargers, to double, and in some cases - triple the useful life of their batteries.

All Battery Tender® battery chargers are designed to fully charge and maintain a wide range of styles including lead acid, AGM and Gel batteries.  Tenders manage batteries in ways that avoid the potential damaging effects that can be caused by most trickle chargers. All Battery Tender® battery chargers have the five following characteristics:

    Characteristics of All Battery Tenders:

• Fully Automatic:  At the end of the regular charging cycle, every Battery Tender automatically switches its output voltage to a safe, storage or float level that eliminates the need to constantly check on the conditions of the battery.

• Full Output Power at Low AC Line Conditions: Battery Tender chargers will deliver full output power with input AC line voltages as low as 90 VAC. (Excluding chargers with output current of 2 amps or less.) 

• Zero to Minimal Current Draw from Batteries:  When the AC power is disconnected, most Battery Tender chargers draw zero current from the battery.  A few of the higher power models draw less than 1 milliamp from the battery. 

• Compact, Lightweight Construction:  At any given power level, Battery Tender chargers offer some of the highest charging power density in the industry. 

• Visual Indication of Charge State:  Every Battery Tender charger has some combination of colored lights to indicate the progress of charging.

• Battery Tenders are compact, and have lightweight construction.

• Battery Tenders are microprocessor controlled and fully automatic.

• Most Battery Tenders have temperature compensation to ensure optimum charge voltage according to ambient temperature.

• Automatically monitors battery and switches from charging to storage mode, and provides a visual indication of the charge state.

• Battery Tenders maintain the charge at the optimum float voltage to virtually eliminate destructive sulfation.

• The use of Battery Tenders extends battery life.

• Battery Tender chargers are equipped with a variety of safety features including reverse polarity protection and continuous short circuit protection.

• Spark free operation.

• Interconnection options include: alligator clips, quick disconnect fused ring terminals, and cigarette lighter adapters. 

• Battery Tenders are available in a variety of models for various applications.

• Every Battery Tender has a warranty, ranging from 1 to 10 years. 

Battery Tender Twin

Although trickle chargers often appear to be a better economic choice for the typical consumer, trickle chargers don't have the advantage of sophisticated electronic control.  The Battery Tender® Plus battery charger is able to perform complex switching functions because its electronic circuitry is controlled by an onboard microprocessor.  The Battery Tender® will automatically switch between bulk charge mode and float charge mode as needed by the battery.  The output level of the Battery Tender® during float mode is well below the gassing voltage of a lead acid battery.  After the bulk charge mode, the battery is "topped off" and while in float mode, any detrimental effects due to gassing are minimized.  The output level of a trickle charger can rise above 15 VDC, even to 16 VDC depending upon the trickle charger type.  If the battery is connected to this high level of voltage for a period of time, even less than a day, extreme damage can be done to the battery. 

Many automatic battery chargers turn off when the battery voltage rises or the charge current falls to a preset level.  Then, after a period of time, when the battery self discharge characteristics have reduced its terminal voltage significantly, sometimes to the point where the battery has lost almost 90% of its stored charge, the charger will turn on and recharge the battery.  This type of cycling will dramatically reduce battery life.  The Battery Tender® Plus charger does not turn off, instead, it remains on and switches from bulk charge mode to a safe float voltage level that keeps the battery charged and yet does not do any harm to the battery or cause any reduction in its useful life. 

• RED - When the red light is on, the battery charger is in the process of fully charging the battery.  In order to properly charge large capacity batteries, the charger may remain in this mode for several hours. 
• GREEN FLASHING - When the green light is flashing, and the red light is on, the battery is greater than 80% charged and may be removed from the charger and used if necessary.  Leave the battery on charge until the green light is solid whenever possible.  Once the green light begins to flash, it will remain flashing until either the battery charger output current drops below 0.1 amp, or until 6 hours has elapsed.
• GREEN - When the green light is lit, the battery charger is in the storage mode of charge.  In this mode, the charger will maintain the battery at full charge.

The battery charger DC output cable has a molded, quick disconnect plug.  The ring terminal, alligator clip, and cigarette adapter output cable accessories all contain the mating plug.

• Ring Terminal Harness, White Disconnect, 6V Plus models only
• Alligator Clips, White Quick Disconnect, 6V Plus models only
• Ring Terminal Harness, Black Quick Disconnect, 12V and 6V Junior models only
• Alligator Clips, Black Quick Disconnect, 12V and 6V Junior models only
• Cigarette Lighter Adapter, Black Quick Disconnect, 12V models only

Top of Page