Temperature-compensated to ensure optimum charge voltage according to ambient temperature
Unique Gel Cell battery adjusted software allows for a slightly lower charge voltage and higher store voltage to protect sensitive true Gel Cell batteries
Lower voltage for specific use on GEL batteries only
Complete 4-step charging program (initialization, bulk charge, absorption mode and float mode) allows for optimal constant battery levels without overcharging
Automatically switches to float/maintenance voltage mode after fully charging the battery
The Battery Tender Plus 12-volt/1.25-amp Battery Charger True Gel Cell model is the best way to deal with the challenge
of keeping 12-volt vehicle batteries optimally powered when not in use, especially for users who own true Gel Cell
batteries. It is not only able to charge any 12-volt lead-acid battery, its specially adjusted internal software allows
for a slightly lowered voltage level that protects sensitive Gel Cell batteries from the dangers of overcharging. It is
also designed to be easy to use in difficult spaces, to utilize a 4-step charging program and safely function in a fully
automatic mode. Taken together this makes the special Gel Cell version of the Battery Tender Plus 12-volt/1.25-amp
Battery Charger an excellent means of ensuring that all your batteries are fully charged and ready to go when you are.
The Deltran Battery Tender Plus 12-volt/1.25-amp Battery Charger True Gel Cell model with alligator clips, loop
connectors and cable
4-step charging with automatic float mode.
The 4-step charging cycle detailed for the Deltran Battery Tender Plus 12-volt/1.25-amp Battery Charger True Gel Cell
The 4-step charge cycle detailed.
What's a Gel Cell?
The Gel Cell battery is similar to the AGM (Absorbed Glass Mat) battery in that its contents are sealed, but different
because technically the AGM battery is still considered to be a wet cell. The guts of a Gel Cell contain a silica
additive that causes it to set up or stiffen, first like Jell-O, then after subsequent discharge/charge cycles more like
peanut brittle. Micro-cracks form in this gelled electrolyte that provide paths for the oxygen recombination reactions
between the positive and negative plates. The recharge voltages on this type of cell are lower than the other styles of
lead acid battery making it probably the most sensitive cell in terms of adverse reactions to over-voltage charging, and
thus needing special care. Safe, 4-step Battery Charging for True Gel-Cell Batteries
Powered by BTP microprocessor technology and utilizing a 4-step charging program (initialization, bulk charge,
absorption mode and float mode), the Battery Tender Plus 12-volt/1.25-amp Battery Charger 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 which eliminates the need to worry about the damaging effects of overcharging,
and the resulting need to check on the condition of the battery. This is taken even further with the Gel Cell model,
which possess a higher store rate and lower charge rate, minimizing the chance of mistaken overcharging. The unit also
features sparkproof connectors, short circuit and reverse polarity protection, an easy to understand charging status LED
indicator, a quick connect harness for use in hard to reach areas and almost no current draw from batteries connected
* Unique Gel Cell battery adjusted software.
* 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.
* Temperature compensated to ensure optimum charge voltage according to ambient temperature.
* Solid state two color LED indicates stage of charger.
* Spark proof and reverse polarity protected.
* Includes quick connect harness for use in hard to reach areas.
* 10 year warranty.
Charger Models Output Voltage Output Current Charging Software*/
Battery Type AC Voltage/
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 ( http://www.amazon.com/Battery-Tender-021-0128-Plus-Charger/dp/B00068XCQU/ ) 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 ( http://www.amazon.com/Battery-Tender-Twin-Dual-Charger/dp/B000NCLHLQ/ ) 12V 0.800A 3 Step STD & AGM 100 to 240 VAC,
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
10-Year Limited Warranty
Deltran provides a limited 10-year warranty on its Battery Tender Plus 12-volt/1.25-amp 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.