Product Description

Battery Tender Plus is the most advanced charger/maintainer on the market specially designed for today's sealed lead acid batteries. The Battery Tender Plus uses micro-processor technology in a four-stage charging profile to charge, improve, and float your battery so it is ready when you are. Constant current charging and regulated voltage patterns allow the battery to be recharged fully and safely without the fear of overcharging.

Product Details

• Amazon Sales Rank: #23 in Automotive
• Color: Black
• Brand: Deltran
• Model: 021-0128
• Released on: 2006-12-01
• Dimensions: 11.00" h x 4.00" w x 11.00" l, 4.00 pounds

Features

• Temperature compensated for optimum charge voltage
• Automatically switches from full charge to float charging mode for top performance
• Reverse polarity protection to ensure user safety
• 10-year warranty
• Safe operation

Customer Reviews

Top off
The constant small drain from the many electronics on some cars will slowly discharge the battery in a car that is not used for a couple of weeks at a time. The battery tender prevents this. It shuts off when the battery is full so as not to overdo it. I had a question and phoning Deltram solved it.

A must buy for Motorcycles
I have owned a Deltran BT Plus for over 12 yrs now for my motorcycles. I keep the bike plugged in 24/7 to maintain the battery at peak level. I use the quick connect and have always connected it to the battery permanently. I will say all my batteries have lasted 5-6 years, which I eventually changed them out of guilt...never lost a battery! This unit has been used on my past 3 bikes and now is on the new #4. Fantastic accessory for any vehicle.

Good, but it needs to catch up with newer battery tech.
The Deltran charger does exactly what it should, which is charge Lead-acid and AGM batteries. The only issue is that this model isn't quite right for 'GEL' type batteries, used on some cars (BMWs) and motorcycles.

GEL batteries require slightly different charging voltages than lead-acid and AGM batteries. Deltran makes a different model (021-0156) for GEL batteries, but with all the software and tech the claim to bring to the game I'd think they could combine the functionality into one charger.