Battery Tender Plus: Best Battery Tender For Corvettes

Battery Tender Plus: Best Battery Tender For Corvettes

You have a vintage Chevrolet Corvette (aren’t they all classic immediately) and you don’t drive it as often as your daily driver, but youClassic Corvette Song Image still want it to be ready to go when you’re ready to drive. That means that the battery has to have enough juice to crank that awesome engine whether it’s been an 2 hours or two months. That’s where the Battery Tender Plus comes in.

You probably already know that you can’t trust the job to just any battery charger. An average battery charger will charge the battery just fine, but what happens when it’s done? Does it shut off automatically? Does it maintain the battery automatically for you? The Battery Tender Plus from Deltran does all of this and more.

Battery Tender Plus ImageHow do I know it’s the best for your Corvette? It’s the choice of the Corvette Museum in Bowling Green, Kentucky of course. Which by the way you should definitely visit along with the manufacturing plant if you get the chance.  Fly in to Nashville or drive directly to Bowling Green to to satisfy every Corvette-lover’s dream!  Need I say more?

Deltran Battery Tender Plus

For a car as classic as a Corvette, you need a classic battery tender that’s safe to use, safe for your car, and keeps doing its job year after year. After all, you’re keeping that baby forever, right? First choice of the Corvette Museum, the Battery Tender Plus does the job of a quality battery charger and tender all rolled into one.

Battery Tender Plus is an advanced charger/maintainer that has been specifically designed by Deltran for modern sealed lead-acid batteries. The Plus has a “brain” that controls a four-stage charging process that charges, improves, and floats your battery so that it is always ready to go when you are. State-of-the-art technology allow your Corvette’s battery to be fully recharged safely without fear of overcharging and without constant monitoring on your part.

Just check out these great features:


  • The advanced microprocessor technology in every BT Plus insures the safe and effective charge and maintenance of Deltran Battery Tender Logoyour Corvette’s battery. This insures that your classic is ready to go when you are and can actually extend your battery’s life by up to 3X! If the battery voltage drops too far under load, full charger output power resumes thereby maintaining your battery and peak operating power ready when you need it.
  • Battery Tenders have been protecting Corvettes since 1989 when they introduced their first model actually based on the algorithm used on U.S. Navy Nuclear Submarines.
  • Fast forward to today and you will find Battery Tender Plus charging and maintaining Bradley Fighting Vehicles and HUMMV’s fighting the protecting America’s interests in Afghanistan, Iraq, and globally.
  • Reliable and safe enough for our military, but used by the millions in home and professional garages around the world as well, you won’t find a better tender for your classic car.Corvette Z06 LS7 Motor
  • This tender comes with an automatic, microprocessor-controlled, complete 4-step charging program (initialization, bulk charge, absorption mode and float mode). This charging program maintains batteries at full charge without overcharging or the damaging effects of trickle chargers.
  • The Plus is temperature compensated to ensure optimum charge voltage according to the current temperature. Temperature can greatly affect chargers that don’t take temperature into account, but you don’t have to worry about that with the BT Plus.
  • The Plus performs double-duty when it comes to protecting your battery. It protects the battery from discharging during periods when it’s not being used and it promotes long battery life by preventing sulphation and fully recharging and conditioning the battery’s plates.

Convenience and Ease-of-Use

  • You won’t find a more convenient solution to the challenges you face in keeping your Corvette’s battery powered-up and readyCorvette Museum Art to go when not in use. Deltran has designed this tender with 1.25 amps of charging capability that will safely and reliably charge and maintain your 12-volt battery.
  • Don’t worry about having to check on the charger all the time to make sure it’s not overcharging. Just connect and forget until you need to use it.
  • Equipped with easy-to-read, Solid state, two color LEDs, you will always be clear on the current state of the tender.
  • A quick-connect harness, light weight (2.3 lbs.), and compact size (11 x 4 x 11 inches) makes this tender easy-to-use in tight spaces
  • BT Plus is able to charge any lead-acid, flooded, or sealed maintenance-free battery including standard and sealed AGM and Gel Cell battery types

Corvette Museum Front Silver CorvetteSafety

  • The Plus automatically switches to float/maintenance mode voltage after fully charging the battery to maintain proper battery voltage and prevent overcharging.
  • Fully spark proof connections, short circuit, and reverse polarity protected mean the ultimate in safe charging and maintenance.


  • Deltran provides a limited 10-year warranty on its BT Plus 12-volt/1.25-amp Battery Charger to the original purchaser based on defective material or workmanship.

Battery Tender Comparison

TitleBattery Tender 021-0123 Battery Tender Junior 12V Battery ChargerBattery Tender 021-0128 Battery Tender Plus 12V Battery ChargerBattery Tender 800 Waterproof 12V Battery ChargerNOCO Genius G750 6V/12V 750mA Amp Smart Battery Charger and MaintainerBlack & Decker BM3B 6V and 12V Battery Charger / MaintainerCharge Master Automatic Battery Charger, Maintainer & Conditioner
FeatureSpark proof during lead connection, reverse polarity protected and includes a 12-foot output cord and 5-year warranty
Perfect for charging all 12-volt lead-acid, flooded or sealed maintenance free batteries (AGM and gel cell)
Complete 4-step charging program (Initialization, Bulk Charge, Float Mode) allows for optimization of battery power, without overcharging
Automatic charge cycle functionality switches to float mode after fully charging the battery
Solid state two color LED indicates stage of charger
Solid state two color LED indicates stage of charger; a quick connect harness for use in hard to reach areas
Perfect for all lead-acid, flooded or sealed maintenance free batteries (AGM and gel cell)
Complete 4-step charging program (initialization, bulk charge, absorption mode and float mode) that maintains batteries at full charge without overcharging via its 4-step charging system
Automatically switches to float/maintenance mode voltage after fully charging the battery
Temperature compensated to ensure optimum charge voltage according to ambient temperature, and spark proof and reverse polarity protected; 10-year limited warranty
Spark proof and reverse polarity protected; protected by a 3-year limited warranty
Designed for use on all AGM sealed maintenance free, lead calcium, and flooded batteries
100% waterproof and ultraportable at a size not bigger than a computer mouse
Complete 3-step charging program (initialization, bulk charge, and float mode) for maintaining optimal performance levels without over charging
Automatically switches to float/maintenance voltage after fully charging the battery
.75 Amperes Smart Battery Charger for 6-volt and 12-volt batteries; charges and maintains all types of lead-acid batteries from 1.2-30Ah, including Wet, Gel, MF, and AGM
Designed for safety; safe for anyone to use; does not generate sparks, and protects against reverse battery hookup, short circuit, open circuit, overheat, overcurrent and does not overcharge the battery
Keeps batteries charged and maintained; constantly monitors the battery to provide optimal battery performance, and extend battery life
Auto-Memory; Returns to the last selected charge mode when restarted for continuous charging
The most advanced charger ever; it features innovative and advanced technology that makes charging easy and simple. the vosFX Processor built inside every charger makes important charging decisions so you don't have to; it is the safest, most effective charger you may ever use
Battery Maintainer for use on 6V & 12V battery systems
Easy connection to vehicle battery using the included battery clips, O-ring terminals or vehicle DC plug
High-frequency smart charging technology keeps batteries at optimal charge
Automatically switches between charging mode and float mode monitoring
Built-in mounting bracket
Selectable amperage: 2, 4, 6 Ah
Battery thermal run away & overload protection
Soft start, gentle ramp-up constant current rate during bulk charge
Plug-N-Play connectors
Selectable battery type: WET, GEL, AGM, Calcium Battery rejuvenation (desulfation) function
Warranty5 year material and workmanship10 year material and workmanship3 year material and workmanship5 Year Limited Warranty
Height9 inch11 inch10 inch4 inch9.75 inch6.5 inch
Weight1.8 pound2.3 pound3.2 pound1.9 pound1.95 pound2 pound
Width4 inch4 inch4 inch10 inch3 inch2 inch
Length8 inch11 inch10 inch10.5 inch5 inch3.5 inch
Rating4.7 out of 5 stars4.7 out of 5 stars4.6 out of 5 stars4.6 out of 5 stars4.4 out of 5 stars5.0 out of 5 stars
ReviewsRead ReviewsRead ReviewsRead ReviewsRead ReviewsRead ReviewsRead Reviews
LinkMore InfoMore InfoMore InfoMore InfoMore InfoMore Info

Product prices and availability are accurate as of Jul 8 0:14:27 UTC but are subject to change. Any price and availability information displayed on the merchant site at the time of purchase will apply to the purchase of this product.

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I hope this article has given you some insight into one of the most popular and capable battery tenders for the Chevrolet Corvette; the Deltran Battery Tender Plus. Make sure you get only the best battery tender for your baby!

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