The Battery Tender® Plus is a 1.25 amp battery charger designed to fully charge a battery and maintain it at proper storage voltage without the damaging effects caused by trickle chargers.

The Battery Tender® Plus battery charger is a desktop, portable, linear power converter that has a true DC output at a maximum power level of approximately 18 or 9 watts, respectively, for the 12V model. This model has a maximum output charging current of 1.25 amps.

Included is a quick-connect harness for hard to reach areas. 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.

Red & green lights alternately flash for reverse polarity, when the battery is sulfated or if the battery terminals or corroded. The following describes the operation of the status indicator lights:

• Red Flashing — When the red light is flashing, the AC power is applied to the charger & the microprocessor circuitry is functioning properly, but the DC output cables are not connected correctly.
• 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 or even days.
• 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 to 8 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.

Perfect for gel BMW motorcycle batteries.

Features & Specs

• Includes one clamp harness and one lug harness.
• Temperature compensated to ensure optimum charge voltage according to ambient temperature.
• Automatically switches from "full charge" to "float charging" modes.
• Battery Tender® at 1.25 amps will charge as fast or faster than any 3 amp charger available.
• Reverse Polarity Protection to ensure user safety.
• Complete, 4-step charging program:
  1. Qualification
  2. Bulk Charge — Red light on, green light off. Constant current = 1.25 amps. Transition to absorption charge when battery voltage reaches 14.4 VDC.
  3. Absorption Charge — Red light on. Absorption voltage = 14.4 VDC. Transition to float charge when battery charging current drops below 0.1 amp or until 6 to 8 hours have elapsed.
  4. Float Charge — Red light off, green light on. Float voltage = 13.2 VDC. If an external load is applied to the battery while the charger is in float charge, and if the battery voltage drops below a range between 12.0 to 12.5 VDC, then the charge cycle restarts.
• BTP microchip technology virtually eliminates battery destroying sulfation.
• Built-in 72 hour timer will protect a marginal battery from over charging.
• Charge/Maintain up to 4 batteries (of similar type / in parallel).
• Spark Proof.
• Size: 4.88 x 3.25 x 2.88"
• Input Power: 115VAC @ 60Hz
• Temperature Range: -20F to 120F
• UL, ETL, CSA listed
• 10 year warranty!

Note: In recent years, the Sealed, GRT (Gas Recombinant Technology), AGM (Absorbed Glass Matte), Lead-Acid battery has enjoyed widespread acceptance in a variety of applications traditionally dominated by flooded battery technology. That Battery Tender® Plus battery charger circuitry provides a superior configuration to accommodate the more demanding recharge requirements of this superior battery technology. Although the original Battery Tender® battery charger will recharge AGM batteries, the full recharge time is longer than with the Battery Tender® Plus battery charger. This is because of the different implantation of the absorption charge mode between these two chargers.

Special Troubleshooting Information

Neither of the charger status indicator lights turn on

1. Disconnect the charger AC power plug from the AC outlet and recheck that the battery charger alligator clips or ring terminals are connected to the correct polarity battery terminals and that they are making a clean, tight connection.
2. Check to make sure that the AC outlet is supplying power by plugging in another appliance like a lamp, or check the outlet voltage with a voltmeter (e.g. multimeter).

The storage/float maintenance status indicator light (green light) goes on immediately when charging a battery known to be discharged

1. The battery may be defective. Take the battery a local shop to be tested.
2. The electrical connections between the charger and the battery may not be completely secured.

After the storage/float maintenance status indicator light (green light) has been on, and the AC power is removed from the charger and then immediately reconnected, it seems to take too much time for the green light to come on again

1. This is NORMAL OPERATION for the Battery Tender® Plus.
2. Whenever AC power is removed from the charger, including momentary AC power outages, the charge cycle resets. Therefore, the battery charge current either has to drop to below 0.1 amp or 6 to 8 hours must elapse before the green light stops flashing.

After the storage/float maintenance status indicator light (green light) has been on, the red light comes on

1. Again, this is NORMAL OPERATION for the Battery Tender® Plus.
2. There has been a momentary AC power outage that reset the charge cycle.
3. There is some other load or appliance drawing power from the battery. When the battery voltage drops below 12.0V to 12.5V, the charge cycle resets.

Products this accessory relates to

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Binetto YTX7L-BS 12-Volt AGM Maintenance Free Battery

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Binetto YTX9-BS 12-Volt AGM Maintenance Free Battery

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Binetto YTX9L-BS 12-Volt AGM Maintenance Free Battery

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Binetto YTZ10S 12-Volt AGM Maintenance Free Battery

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