Battery tender 4.5 amp battery charger and maintainer

Quickly re-charge and maintain your battery with The Battery Tender® 5 Amp charger. Fully automatic and easy to use. With a 4-Step Fully Automatic Charging (Initialization, Bulk, Absorption, Float) sequence this charger switches to a float / maintenance voltage after the battery has reached 100%. Perfect for all lead-acid, flooded or sealed maintenance free batteries (AGM and Gel Cell) which is versatile for a variety of applications. It is completely safe and includes a 72 hour timer to prevent further damage to marginal batteries.

  • Input: 120VAC @ 60 Hz
  • Output: 12 Volts DC @ 5 Amps
  • 4-Step Fully Automatic Charging (Initialization, Bulk, Absorption, Float) Automatically switches to float / maintenance voltage after fully charging the battery.
  • Perfect for all lead-acid, flooded or sealed maintenance free batteries (AGM and Gel Cell)
  • Spark Proof
  • Short Circuit Protected
  • Reverse Polarity Protected
  • Safety timer: 72 hrs
  • Listed in California Appliance Efficiency Database
  • Agency Approvals: UL / CSA / BC / FCC
  • Dimensions: 3.99W x 8.26L x 2.34H
  • AC Power Cord Length: 6 ft. - 18AWG
  • DC Output Cord Length 4.5 ft. - 18AWG
  • DC Accessory Length 1.5 ft.
  • Weight: 3.0 lbs.
  • Warranty: 5 Years

California Residents
WARNING: Cancer and Reproductive Harm - P65Warnings.ca.gov

APO/FPO, Afghanistan, Africa, Alaska/Hawaii, American Samoa, Anguilla, Antigua and Barbuda, Armenia, Aruba, Azerbaijan Republic, Bahamas, Bangladesh, Barbados, Belize, Bhutan, British Virgin Islands, Cayman Islands, Cook Islands, Costa Rica, Dominica, Dominican Republic, El Salvador, Fiji, French Guiana, French Polynesia, Georgia, Grenada, Guadeloupe, Guatemala, Haiti, Honduras, India, Iraq, Jamaica, Kazakhstan, Kiribati, Korea, South, Kyrgyzstan, Libya, Maldives, Marshall Islands, Martinique, Mexico, Micronesia, Mongolia, Montserrat, Nauru, Nepal, Netherlands Antilles, New Caledonia, Nicaragua, Niue, Oman, Pakistan, Palau, Panama, Papua New Guinea, Reunion, Russian Federation, Saint Kitts-Nevis, Saint Lucia, Saint Vincent and the Grenadines, Solomon Islands, South America, Sri Lanka, Tajikistan, Tonga, Trinidad and Tobago, Turkey, Turkmenistan, Turks and Caicos Islands, Tuvalu, US Protectorates, Ukraine, Uzbekistan, Vanuatu, Venezuela, Vietnam, Wallis and Futuna, Western Samoa, Yemen

$79.99

$79.99

Price when purchased online

Free shipping, arrives by Tue, Nov 22 to

Want it faster? to see options

Free Holiday returns until Jan 31

Battery tender 4.5 amp battery charger and maintainer

Sponsored

Powerowl Rechargeable Battery Charger with 4 AA and 4 AAA Rechargeable Batteries NiMH

4.5 out of 5 Stars. 166 reviews

2-day shipping

Battery tender 4.5 amp battery charger and maintainer

Notice unusual marketplace activity?

Report

The fully automatic Battery Tender® 4 Amp is a top-of-the-line 12V or 6V switchable battery charger, 12V Lithium(LiFePO4) perfect for automotive, motorcycle and marine repair and maintenance shops. With 3x the power of the Battery Tender® plus this charger is versatile and powerful. Equipped with a simplified 4-Step Automatic charge process. All Battery Tender® chargers automatically switch from full charge to float charge mode. Reverse hook-up protection makes connecting your charger safe and easy to do. LED light indicators make selecting your charge mode simple.

  • 12V or 6V switchable @ 4 Amp
  • Selectable for AGM/Standard/GEL or Lithium (LiFePO4) *12V only for Lithium
  • ISM™ (Infinite Sequential Monitoring) of the fully automatic 4-step charge process (qualification, bulk charge, absorption, float)
  • Microprocessor controlled
  • Spark proof even when output leads touch.
  • Reverse Polarity Protection - no charge or battery damage
  • State of charge LED indicators
  • Includes Rings & Clips
  • Shipping Weight: 3.15lbs
  • Dimensions: 6.8” x 3.68” x 1.96” (charger only)
  • Lead acid safety timer: 25 hrs.
  • Lithium safety timer: 15 hrs.
  • Agency approval: BC / FCC
  • 5 year warranty

California Residents

WARNING: Cancer and Reproductive Harm - P65Warnings.ca.gov

Is a battery tender the same as a maintainer?

The main difference between a battery charger and a battery maintainer is that a charger applies a constant charge until it's done, which means it needs to be disconnected once the battery has been fully charged. This means battery chargers cannot be left connected and unattended for long periods of time.

Is it OK to leave a battery tender on all the time?

So the short answer is 'Yes, you can leave the Battery Tender® Plus (BT Plus) battery charger connected to a battery even when it is being used to provide power to another appliance.

What is better a battery maintainer or a trickle charger?

Trickle chargers are meant to be disconnected when they're done charging, while battery maintainers can be left plugged in. Remember, since all battery maintainers are "smart," they won't deliver any charge to a battery that's already full.

What is the best amperage for a battery tender?

A more-than-enough solution for the majority of batteries would be the Battery Tender 10 AMP, 5 AMP, and 2 AMP selectable current and selectable chemistry WiFi-connected battery charger.