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Battery Tender Plus 12v 1.25 Amp GEL BATTERY Smart Charger - 021-0156

$51.00 - No Tax
This item qualities for
$7.50 Flat Rate Shipping *
Out of Stock

The Manufacturer has discontinued this charger. Recommending the Battery Tender 021-0128.

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Product InformationStore Part Number: 021-0156


This is a very popular 12 volt unit for battery storage. 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 E-Z quick disconnect harness (1 of each ring ends and alligator clips included) allows you to leave the charger wiring attached to the battery while operating the vehicle. Battery Tender Plus will not overcharge or boil battery when connected long term.

Our most popular battery charger/maintainer, having a 10 year manufacturers limited warranty.

Each Battery Tender ships with one each quick disconnect ring set and alligator clips.


  • Temperature compensated to ensure optimum charge voltage according to ambient temperature.
  • Automatically switches from full charge to float charging mode.
  • Reverse Polarity Protection to ensure user safety.
  • Complete 3-step charging program (Bulk Charge, Absorption Mode, and Float Mode).
  • Optimal 3 Step Charging
  • Built-in Mode Indicators
  • Spark Free Hook Up
  • Demand Sensing
  • Reverse Polarity Protection
  • Short Circuit Protection
  • Thermal Protection
  • Temperature Compensation
  • 10 Year Warranty


* Flat Rate shipping is for the lower 48 states only.

Tech Specs

  • Dimensions (LxWxH): 4.875 x 3.25 x 2.875 in
  • Weight: 2.75 lb
  • Shipping Weight: 3.0 lb
  • DC Output Amps: 1.25
  • Absorption Voltage: variable up to 14.2V
  • AC Input Volts: 115 V
  • AC Input Volts Freq.: 60 Hz
  • Max Inrush Current, Single Cycle: 0.36 A
  • Float Voltage: 13.3 V
  • Model: 021-0156
  • Manufacturer: Deltran
  • Power Factor: 0.8
  • Maximum Power (+/- 3%) @ 25° C: 18 W
  • Charge Reset: Battery Voltage Threshold: 12.5 V
  • Working Temperature: -20° to 60° C
  • Enclosure: Powder Coated Aluminum Chassis
  • Output Banks: 1
  • Temperature Compensation: Yes
  • Regulatory Approval: UL/CSA/CE/
  • Manufacturer Part #: 021-0156
  • Made In: Asia

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Product Information

Installation Manual

Order Line: 1-800-362-5397
M–F 6am–5pm PST
Tech Help: 541-474-4421
Fax: 541-471-6014
276 Tech Way, Suite A
Grants Pass, OR 97526
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