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Battery Tender 021-0128 | Battery Tender Plus 12v 1.25 Amp 4 Stage Smart Charger and Maintainer by Deltran

PART NUMBER: 021-0128
zoom photos Battery Tender 021-0128 | Battery Tender Plus 12v 1.25 Amp 4 Stage Smart Charger and Maintainer by Deltran
Battery Tender 021-0128 | Battery Tender Plus 12v 1.25 Amp 4 Stage Smart Charger and Maintainer by Deltran Battery Tender 021-0128 | Battery Tender Plus 12v 1.25 Amp 4 Stage Smart Charger and Maintainer by Deltran Battery Tender 021-0128 | Battery Tender Plus 12v 1.25 Amp 4 Stage Smart Charger and Maintainer by Deltran Battery Tender 021-0128 | Battery Tender Plus 12v 1.25 Amp 4 Stage Smart Charger and Maintainer by Deltran Battery Tender 021-0128 | Battery Tender Plus 12v 1.25 Amp 4 Stage Smart Charger and Maintainer by Deltran Battery Tender 021-0128 | Battery Tender Plus 12v 1.25 Amp 4 Stage Smart Charger and Maintainer by Deltran
Battery Tender 021-0128 | Battery Tender Plus 12v 1.25 Amp 4 Stage Smart Charger and Maintainer by Deltran Battery Tender 021-0128 | Battery Tender Plus 12v 1.25 Amp 4 Stage Smart Charger and Maintainer by Deltran Battery Tender 021-0128 | Battery Tender Plus 12v 1.25 Amp 4 Stage Smart Charger and Maintainer by Deltran Battery Tender 021-0128 | Battery Tender Plus 12v 1.25 Amp 4 Stage Smart Charger and Maintainer by Deltran Battery Tender 021-0128 | Battery Tender Plus 12v 1.25 Amp 4 Stage Smart Charger and Maintainer by Deltran Battery Tender 021-0128 | Battery Tender Plus 12v 1.25 Amp 4 Stage Smart Charger and Maintainer by Deltran Battery Tender 021-0128 | Battery Tender Plus 12v 1.25 Amp 4 Stage Smart Charger and Maintainer by Deltran
Battery Tender 021-0128 | Battery Tender Plus 12v 1.25 Amp 4 Stage Smart Charger and Maintainer by Deltran Battery Tender 021-0128 | Battery Tender Plus 12v 1.25 Amp 4 Stage Smart Charger and Maintainer by Deltran Battery Tender 021-0128 | Battery Tender Plus 12v 1.25 Amp 4 Stage Smart Charger and Maintainer by Deltran Battery Tender 021-0128 | Battery Tender Plus 12v 1.25 Amp 4 Stage Smart Charger and Maintainer by Deltran Battery Tender 021-0128 | Battery Tender Plus 12v 1.25 Amp 4 Stage Smart Charger and Maintainer by Deltran Battery Tender 021-0128 | Battery Tender Plus 12v 1.25 Amp 4 Stage Smart Charger and Maintainer by Deltran Battery Tender 021-0128 | Battery Tender Plus 12v 1.25 Amp 4 Stage Smart Charger and Maintainer by Deltran
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Battery Tender 021-0128 | Battery Tender Plus 12v 1.25 Amp 4 Stage Smart Charger and Maintainer by Deltran

PART NUMBER: 021-0128
★★★★★ (7) Leave a review →
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  • Temperature-compensated!
  • Reverse Polarity Protection
  • 4-Stage Charging
  • Safety timer: 72 hrs.
  • Certification: UL/CSA. FCC.
  • Part Number: 021-0128

Overview

The Battery Tender Plus 021-0128 is the original 12v 1.25 Amp smart charger with the iconic metal housing. This 12v 1.25 amp smart charger is ideal for smaller starting batteries often found in motorcycles, ATVs, UTVs, snowmobiles, and lawnmowers!

The Battery Tender Plus is compatible with Flooded, AGM, and Gel cell batteries. It features several safety protections, such as fused cable accessories, spark-free hookup, reverse polarity protection, and a built-in safety timer to prevent overcharging!

The 021-0128 also features a low voltage detection down to 3 volts! And, just like the original unit, this unit comes with a 10-year warranty!

What’s in the Battery Tender Plus Box:

  • Battery Tender Plus Charger (Part# 021-0128)
  • Alligator Clips with integrated fused Ring Harness
  • User Manual


Features

  • Temperature-compensated!
  • Automatically Maintenance mode.
  • Reverse Polarity Protection
  • 4-Stage Charging
  • Suitable for flooded or sealed maintenance-free batteries (AGM and gel cell).
  • Safety timer: 72 hrs.
  • Certification: UL/CSA. FCC.
  • AC Power Cord Length: 6 ft. - 18AWG
  • DC Output Cord Length 4.5 ft. - 18AWG
  • DC Accessory Length 1.5 ft. - 18 AWG
  • 10 year Warranty!

This Product Replaces These Other Products

Works In

Vehicles that 021-0128 works in

Technical Specifications

  • Dimensions (LxWxH): 4.875 x 3.25 x 2.875 in
  • Weight: 2.75 lb
  • DC Output Amps: 1.25
  • Absorption Voltage: 14.6 V
  • AC Input Volts: 115 V
  • AC Input Volts Freq.: 60 Hz
  • Max Inrush Current, Single Cycle: 0.36 A
  • Float Voltage: 13.3 V
  • 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/FCC
  • Shipping Weight: 3.0 lb
  • UPC: 734357001280
  • Made in: Vietnam
  • Manufacturer: Deltran
  • Manufacturer’s Part Number: 021-0128
  • Model: 021-0128

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Reviews

5.00 Average
5 Stars 7
4 Stars 0
3 Stars 0
2 Stars 0
1 Stars 0
Rated 5.00/5 Stars from 7 customer reviews.

Do you own the 021-0128? 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.

★★★★★
tender

works like my other battery tenders that are great

Is this review helpful?
Written by on Nov 14, 2019. Verified Purchase — (2 of 3 customers found this review helpful)
★★★★★
Great Product

This product works just as described and is working perfectly. The only thing that surprised me was that it took a couple of days for the tender to completely charge the system before the light turned green. Of course, this was on my dodge diesel truck that has two batteries. Everything is now working as it should.

I am really happy with the Tender Plus.

Is this review helpful?
Written by on Jun 01, 2020. Verified Purchase — (6 of 6 customers found this review helpful)
★★★★★
Worry free battery maintainer

The battery tender just works. It completes the whole charge cycle and finishes in a “storage maintenance state”. With the recent stay home orders, I use the charger on both cars to keep the batteries up with the infrequent vehicle usage. Newer cars tend to deplete the battery quicker with all the on board electronics and computers. So if the vehicle sits for a while, the battery will be discharged and eventually ruined. The battery tender is a 1.25 amp model so it takes about a day to fully charge a 60A/hr 450CCA car battery from a 75% charge. Over all a great product. This product is mainly a maintainer, so if you need a fast “jump charge” a higher amperage model would be more suitable.

BatteryStuff processed my order quickly and I had the unit in a few days. Order process was easy and no problems with the website.

Is this review helpful?
Written by on May 26, 2020. Verified Purchase — (6 of 6 customers found this review helpful)
★★★★★
Excellent product

I own 3 battery tenders and they have never failed to keep my batteries topped off ready to go

Is this review helpful?
Written by on Jun 29, 2020. Verified Purchase — (4 of 4 customers found this review helpful)
★★★★★
Outstanding

The Battery Tender Plus 12v 1.25 Amp 4 Stage Smart Charger is outstanding. I have 3 of them and just purchased 2 more. They will not let you down. The 3 that I have are almost 10 years old and still work great. The price is very good and the customer service I received from batterystuff.com was ourstanding.

Is this review helpful?
Written by on Sep 20, 2022. — (2 of 2 customers found this review helpful)
★★★★★
Good product

Does what it is advertised to do, simple to use. I'm satisfied. Batterystuff.com seems to be a good source.

Is this review helpful?
Written by on Jun 04, 2020. Verified Purchase — (2 of 2 customers found this review helpful)
★★★★★
Excellent

I bought this tender in 2012 as I travel frequently on business and my vehicles sit for weeks at a time. I have used this on my BMW motorcycle AGM battery, My Ford F-150 AGM battery and a conventional (flooded) battery in my older Chevy. Had zero issues or complaints and I get 7-8 years out of automotive batteries by using this tender as needed.

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Written by on Oct 30, 2022. — (1 of 1 customers found this review helpful)

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Write a Review Do you own the 021-0128? 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.

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Battery Tender 021-0128 | Battery Tender Plus 12v 1.25 Amp 4 Stage Smart Charger and Maintainer by Deltran
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