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Battery Tender 4-Amp 6/12-Volt Car Battery Charger

20 Reviews
  • STAY CHARGED: The 4 amp charger provides a full charge to your machine’s battery before automatically switching to float mode to maintain proper voltage levels for your battery without overcharging
  • FULLY SELECTABLE: With the push of a button, easily switch between charging AGM or flooded and lithium ion (LiFePO4) batteries to provide and maintain an optimal charge level for 6 and 12 volt batteries alike
  • HIGH POWERED: 4 amp switchable charger delivers a powerful charge to keep your car, SUV, pickup truck, or boat battery at peak performance by providing reliable engine starts and extended battery life

$59.48

SKU:734357220957
Battery Tender® 4 AMP Battery Charger and Maintainer, 6V/12V, Lead Acid and Lithium Selectable smart battery charger is versatile and powerful! The ideal battery charger for automotive, marine, powersports and maintenance repair shops. Equipped with a 4-Step Automatic charge process which will fully charge and maintain your battery indefinitely. Battery Tender® Battery Chargers won’t overcharge or discharge your battery, it will charge and maintain your battery so it’s ready when you’re ready to go. This 4 amp will allow you to select between 6-volts and 12-volts, lead acid or lithium charging and assign the proper voltage. Connecting and Charging is as Easy as 1-2-3
  • STAY CHARGED: The 4 amp charger provides a full charge to your machine’s battery before automatically switching to float mode to maintain proper voltage levels for your battery without overcharging
  • FULLY SELECTABLE: With the push of a button, easily switch between charging AGM or flooded and lithium ion (LiFePO4) batteries to provide and maintain an optimal charge level for 6 and 12 volt batteries alike
  • HIGH POWERED: 4 amp switchable charger delivers a powerful charge to keep your car, SUV, pickup truck, or boat battery at peak performance by providing reliable engine starts and extended battery life
  • EASY TO USE: A low maintenance design that’s quick and simple to use, our switchable automobile charger and maintainer easy to use, just connect it and forget it
  • SAFE AND SECURE: Our battery charger and maintainer is spark-proof during lead connection and automatically detects reverse polarity to ensure a correct, locked-in connection before providing power
  • Dimensions: 6.8” x 3.68” x 1.96” (charger only), shipping Weight: 3.15lbs
  • Includes Rings Terminal and Alligator Clips
Weight 1.75 lbs
Dimensions 11 × 2 × 8 in

Latest reviews

  1. SCII

    Car battery died several days ago because we left a light on. Bought one of these, plugged it into the wall, connected the clips to the battery and had a fully charged battery in less than 3 hours. I just I was expecting it to take overnight since some reviews of other chargers mentioned having them connected for that long, but I don’t have a lot of knowledge of car batteries.

  2. Butch

    Recently purchased and installed. So far working as advertised; brought battery to full charge and then switched to maintenance. Green lights indicate functional level and easy to read from far side of garage. Be sure to READ INSTRUCTIONS FIRST BEFORE CONNECTING TO BATTERY.

  3. Derick

    It kept a car battery charged for three weeks until the part came in to fix it.

  4. Colonel

    Each trip, each purchase and each Lowe’s employee never disappoint me. Great selection, lovely people there to assist you and exceptional prices, I’m never disappointed in Lowe’s.

  5. Easternkayaker

    Versatile automatic charger that can be used on lead acid and lithium 6/12 volt batteries. I use this charger on my wife’s car, since she only uses it 1 or 2 times a week. It keeps the battery healthy by automatically charging the battery when the battery charge level starts to drop. I use a smaller Battery Tender unit on my motorcycle’s battery, since I only ride it on weekends. It is not good for a lead acid battery to sit for extended periods of time, since it becomes weaker via the process of sulfation.

  6. VirtualJay

    I’ve owned a few of these from various manufacturers, including the 3 Amp version of this battery tender. I liked the 3 Amp best, so I went looking for another and found this 4 Amp version. Works perfectly and price was good. Highly recommended.

  7. TTom

    It does what it is advertised to do. One bonus i did not see when i bought it, it will charge and maintain the new 12VDC lithium ion batteries as well.

  8. sconi

    Had it on my battery all winter after purchasing it in the fall of 2020, the green lights were on indicating that it was maintaining the battery and everything was fine. Just tried to start it and the battery was dead…. apparently I bought a box with cables attached and has green led’s that light up but does nothing else. Don’t waste your money on this.

  9. JohnRR

    This charger is fast and can do both Lithium and conventional batteries. Battery Tender Chargers are long lasting and reliable! Unlike other brands I have recently thrown away.

  10. Spaz

    Works exactly how it is supposed to. Perfect for the newer auto batteries as well as older ones.

  11. SCII

    Car battery died several days ago because we left a light on. Bought one of these, plugged it into the wall, connected the clips to the battery and had a fully charged battery in less than 3 hours. I just I was expecting it to take overnight since some reviews of other chargers mentioned having them connected for that long, but I don’t have a lot of knowledge of car batteries.

  12. Butch

    Recently purchased and installed. So far working as advertised; brought battery to full charge and then switched to maintenance. Green lights indicate functional level and easy to read from far side of garage. Be sure to READ INSTRUCTIONS FIRST BEFORE CONNECTING TO BATTERY.

  13. Derick

    It kept a car battery charged for three weeks until the part came in to fix it.

  14. Colonel

    Each trip, each purchase and each Lowe’s employee never disappoint me. Great selection, lovely people there to assist you and exceptional prices, I’m never disappointed in Lowe’s.

  15. Easternkayaker

    Versatile automatic charger that can be used on lead acid and lithium 6/12 volt batteries. I use this charger on my wife’s car, since she only uses it 1 or 2 times a week. It keeps the battery healthy by automatically charging the battery when the battery charge level starts to drop. I use a smaller Battery Tender unit on my motorcycle’s battery, since I only ride it on weekends. It is not good for a lead acid battery to sit for extended periods of time, since it becomes weaker via the process of sulfation.

  16. VirtualJay

    I’ve owned a few of these from various manufacturers, including the 3 Amp version of this battery tender. I liked the 3 Amp best, so I went looking for another and found this 4 Amp version. Works perfectly and price was good. Highly recommended.

  17. TTom

    It does what it is advertised to do. One bonus i did not see when i bought it, it will charge and maintain the new 12VDC lithium ion batteries as well.

  18. sconi

    Had it on my battery all winter after purchasing it in the fall of 2020, the green lights were on indicating that it was maintaining the battery and everything was fine. Just tried to start it and the battery was dead…. apparently I bought a box with cables attached and has green led’s that light up but does nothing else. Don’t waste your money on this.

  19. JohnRR

    This charger is fast and can do both Lithium and conventional batteries. Battery Tender Chargers are long lasting and reliable! Unlike other brands I have recently thrown away.

  20. Spaz

    Works exactly how it is supposed to. Perfect for the newer auto batteries as well as older ones.

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  • FULLY SELECTABLE: With the push of a button, easily switch between charging AGM or flooded and lithium ion (LiFePO4) batteries to provide and maintain an optimal charge level for 6 and 12 volt batteries alike
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