view large photo

Swipe Photo to View More

Battery Tender Plus 6v 1.25 Amp 3 Stage Smart Charger BT6v021-0144

$55.00 - No Tax
This item qualities for
$7.50 Flat Rate Shipping *
Out of Stock

This Item Has Been Discontinued. Please See The Battery Tender Jr 6v 1.25 Amp Charger – 022-0196

Share this item with your friends

Product InformationStore Part Number: BT6v021-0144


This is a very popular 6 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. #021-0144

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
  • Over Voltage Protected
  • Short Circuit Protection
  • Line Regulation
  • Load Regulation
  • 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 3.875 in
  • Weight: 2.7 lb
  • Shipping Weight: 3.0 lb
  • Max Current, During Bulk Charge: 1.25 A
  • Absorption Voltage: 7.2 V
  • AC Input Volts: 115 V
  • AC Input Volts Freq.: 60 Hz
  • Max Inrush Current, Single Cycle: 0.18 A
  • Float Voltage: 6.6 V
  • Manufacturer: Deltran
  • Power Factor: 0.8
  • Maximum Power (+/- 3%) @ 25°C: 9 W
  • Charge Reset: Battery Voltage Threshold: 6.2 V
  • Working Temperature: -20 ° to 60 °C
  • Enclosure: Powder Coated Aluminum Chassis
  • Output Banks: 1
  • Warranty: 10 Year
  • Temperature Compensation: Yes
  • Regulatory Approval: UL/CSA/CE/
  • Manufacturer Part #: BT6v021-0144

Customers who bought this product also bought:

Reviews and Ratings

5.00 Average
5 Stars 1
4 Stars 0
3 Stars 0
2 Stars 0
1 Stars 0
Rated 5.00/5 Stars from 1 customer reviews.

Do you own the BT6v021-0144? Please, tell us what you think about it. It helps us provide you with better products. Please note that it may take up to 72 hours for your review to appear.

Owned one for years...
Pros: I Have been using this charger on my 49 Chevy for nearly 10 years. The battery is always charged and ready to go, no matter how long I go between starts!
Cons: Battery Tender could switch to the standard accessory plug that they use on the rest of their 12 volt products..
Is this review helpful?
Written by Steve on Aug 15, 2011. Ownership: Use regularly. Knowledge Level: I know what an outlet is — (87 of 171 customers found this review helpful

See More Reviews

Manuals & Tutorials

Warranty Information

Trouble Shooting Instructions

Product Instructions

Product Information

Chargers Tutorial

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
Buy Veteran, SEMA Member, and Blueribbon Coalition Blueribbon Coalition SEMA Member Buy Veteran