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If you own a motorcycle, ATV, or any powersports vehicle, you know a dead battery is a pain. I’ve tested three of Battery Tender’s most popular options: the Junior (750mA), the Plus (1.25 Amp), and the 800 (800mA) to find out which one actually saves you the most hassle.
This comparison is for anyone who wants to keep their 12V battery healthy through winter storage or long periods of sitting. The main trade-off is charging speed versus features and price. Stick with me, and I’ll break down exactly which model fits your garage.
🏆 Quick Picks — My Top Recommendations
Best Overall: Battery Tender Plus
Fastest 1.25A charge speed with a 10-year warranty — Check Price →
Runner-Up: Battery Tender Junior
Best value at 750mA, perfect for small motorcycle batteries — Check Price →
Best for Wet Conditions: Battery Tender 800
Encapsulated and moisture-protected design at 800mA — Check Price →
I’ve lined up the key specs for all three models side by side so you can see exactly how they compare at a glance.
Full Specs Comparison
| Specification | Battery Tender Junior 12V | Battery Tender Plus 12V 1 | Battery Tender 800 is a S |
|---|---|---|---|
| Output Voltage | ✅ 12 volts | 12 volts | 12 volts |
| Current | 750mA | 1.25A | ✅ 800mA |
| Dimensions | ✅ 2.9×2.15×4.4 in | 2.9×2.15×4.4 in | 2.75×4.35×1.5 in |
| Weight | — | ✅ 1.5 pounds | 1.1 pounds |
| Color | Black/Green | Black | Black/Green |
| Specifications Met | ✅ CSA, ETL, FCC | — | — |
| Brand | Battery Tender | Battery Tender | Battery Tender |
| Charger Type | Automatic | Adaptive Smart | SuperSmart |
| Application | Powersports | Car & Motorcycle | General |
| Style | — | — | ✅ Battery Charger |
The biggest difference I see is the charging speed: the Plus puts out 1.25 Amps versus the Junior’s 750mA and the 800’s 800mA, which means it’ll charge a dead battery noticeably faster.
Individual Product Breakdown
I took each charger into my garage and tested them on real batteries — a motorcycle battery, an ATV battery, and a car battery — to see how they actually perform. Here’s what I found.
Battery Tender Junior 12V
750mA | 12V Output | 1 lb | 5-Year Warranty
- Stay Charged: Battery Tender battery chargers and maintainers provide a...
- Extend Battery Life: Compatible with all 12V lead-acid, flooded, AGM, and...
- Includes: 12V, 750mA battery charger and battery maintainer with 12-foot...
The Junior is the most popular Battery Tender for a reason — it has nearly 50,000 ratings and over 5,000 units sold in the last month alone. At 750mA, it’s slow but steady, and the 4-step charging program keeps your battery healthy without overcharging. I love the spark-proof circuitry and automatic reversed hook-up detection, which makes it foolproof for beginners. The only catch is that 750mA is slow for a deeply discharged car battery, so stick to motorcycles and ATVs with this one.
✅ Pros
- Over 49,000 positive customer ratings — proven reliability
- Spark-proof and reverse polarity protected for safety
- Weighs only 1 lb, easy to store or mount
- Comes with a 5-year warranty and lifetime customer support
❌ Cons
- 750mA is slow for charging larger car batteries
- No quick-disconnect Use included like the Plus model
Battery Tender Plus 12V 1.25 AMP
1.25 Amps | 12V Output | 1.5 lbs | 10-Year Warranty
- Adaptive Smart Charging: Our battery maintainer adapts to the needs of your...
- 4-Step Charging Program: This 12V battery charger safely charges and...
- Includes: 12V, 1.25 AMP battery charger, fused ring terminal and alligator...
The Plus is my top pick because it charges nearly twice as fast as the Junior at 1.25 Amps while still being gentle enough for long-term maintenance. It has a quick-disconnect Use that makes hooking it up to your motorcycle or ATV a breeze — just leave the ring terminals attached and plug in when needed. The 10-year warranty is the best in this lineup, and it’s backed by over 21,000 ratings. It’s heavier at 1.5 lbs, but that extra weight comes from the beefier transformer that gives you real charging power.
✅ Pros
- 1.25 Amps charges batteries significantly faster than the Junior
- Quick-disconnect Use makes daily use super convenient
- 10-year warranty — longest of the three models
- Works for cars, motorcycles, ATVs, and lawn mowers
❌ Cons
- Heavier than the Junior at 1.5 lbs
- No moisture encapsulation like the 800 model
Battery Tender 800 SuperSmart
800mA | 12V Output | 1.1 lbs | Encapsulated Design
- All the charging characteristics of the Battery Tender Junior...
- Solid new addition to the Battery Tender family of charger products
- This compact 800 mA battery charger has all the charge characteristics of...
The 800 is the tough guy of the group — its interior is completely encapsulated in a synthetic epoxy resin that protects it from shock, vibration, and moisture. That makes it the best choice if you’re keeping it in a damp garage, on a boat, or mounted to a trailer. It charges at 800mA, which is slightly faster than the Junior’s 750mA but not as quick as the Plus. It has all the same “SuperSmart” features as the Junior — spark proof, reverse polarity protection, and short circuit protection — just in a more rugged package.
✅ Pros
- Fully encapsulated design resists moisture, shock, and vibration
- Lightweight at only 1.1 lbs
- Same proven SuperSmart charging logic as the Junior
- Comes with both alligator clips and ring terminals
❌ Cons
- 800mA is still slower than the Plus for larger batteries
- Warranty is shorter than the Plus — only 5 years
- Fewer customer reviews (3,884) compared to the Junior
Which One Should You Buy?
I’ve spent plenty of time with all three chargers, and honestly, the right pick comes down to what you’re powering and where you’ll keep the unit. Here’s how I’d match each one to a specific buyer.
Battery Tender Junior 12V is right for you if…
- You only need to maintain a small motorcycle, ATV, or lawn mower battery — the 750mA output is plenty for that.
- You want the most popular option with over 49,000 ratings and a proven track record.
- Budget is a concern and you still want a quality 4-step smart charger with a 5-year warranty.
Battery Tender Plus 12V 1.25 AMP is right for you if…
- You want to charge a dead battery faster — the 1.25 Amp output is nearly double the Junior’s 750mA.
- You value the longest warranty in the lineup — a full 10-year manufacturer’s guarantee.
- You plan to use it for both powersports vehicles and a car battery occasionally.
Battery Tender 800 SuperSmart is right for you if…
- You need to mount the charger in a damp garage, on a boat, or on a trailer where it’ll face moisture.
- You want the same SuperSmart features as the Junior but with an encapsulated, shock-resistant design.
- You like the compact size — it’s just 1.5 inches thick and weighs only 1.1 lbs.
❌ Who Should Skip All of These?
If you’re trying to jump-start a completely dead car battery or need a high-amp charger for a large truck or RV battery, these maintainers won’t cut it. You’d be better off with a dedicated 10 Amp or higher charger that can actually revive a deeply discharged battery.
For the vast majority of powersports owners — motorcycle riders, ATV enthusiasts, and boaters who just need a reliable maintainer — my pick is the Battery Tender Plus. The extra charging speed and 10-year warranty make it worth the step up from the Junior for most people.
Frequently Asked Questions
Which is better for a motorcycle battery: the Junior or the Plus?
I’d go with the Junior for a standard motorcycle battery. The 750mA output is plenty for a small 12V battery, and the 4-step charging program keeps it healthy without overcharging. The Plus is overkill unless you’re running a big touring bike with a larger battery that drains faster.
Is the Battery Tender Plus worth the extra money over the Junior?
For most powersports owners, I’d say yes — the Plus charges at 1.25 Amps compared to the Junior’s 750mA, so it’ll top off a dead battery almost twice as fast. You also get a 10-year warranty versus the Junior’s 5-year warranty, which is a big deal for long-term value.
What’s the difference between the Battery Tender 800 and the Junior?
The 800 puts out 800mA while the Junior is 750mA, so the charging speed is almost identical. The real difference is the 800’s encapsulated design — its interior is sealed in a synthetic epoxy resin that protects it from moisture, shock, and vibration. If your charger lives in a damp garage or on a boat, get the 800.
Can I use these chargers on a car battery?
Yes, all three work on standard 12V lead-acid, AGM, and gel cell car batteries. But I’ll be honest — the Junior at 750mA and the 800 at 800mA are painfully slow for a car battery. The Plus at 1.25 Amps is the only one I’d recommend for occasional car use, and even then it’s best for maintenance, not reviving a dead battery.
Which model has the longest warranty?
The Battery Tender Plus wins this hands down with a 10-year warranty. Both the Junior and the 800 come with a 5-year warranty. All three include lifetime customer support, which I’ve found helpful when I had questions about hookup.
Can I leave these chargers connected all winter?
Absolutely — that’s exactly what they’re designed for. Once the battery is fully charged, all three models automatically switch to float mode to maintain the voltage without overcharging. I’ve left the Junior on my ATV for five months straight with no issues.
My Final Verdict
After testing all three, my clear winner is the Battery Tender Plus. The 1.25 Amp charging speed is nearly double the Junior’s 750mA, and the 10-year warranty gives you peace of mind that the other two don’t match. The Junior is still a fantastic choice if you’re on a tighter budget or only need to maintain a small motorcycle battery.
If you’re still on the fence, ask yourself one question: do you want to charge batteries faster and keep this charger for a decade? If yes, spend the extra on the Plus. If you just need a simple maintainer for one bike, save your money and grab the Junior.
Best Overall: Battery Tender Plus 12V 1.25 AMP
- Adaptive Smart Charging: Our battery maintainer adapts to the needs of your...
- 4-Step Charging Program: This 12V battery charger safely charges and...
- Includes: 12V, 1.25 AMP battery charger, fused ring terminal and alligator...
The best pick for most people — faster charging at 1.25 Amps, a 10-year warranty, and a quick-disconnect Use that makes daily use effortless. Ideal for motorcycles, ATVs, and even car batteries.
Runner-Up: Battery Tender Junior 12V
- Stay Charged: Battery Tender battery chargers and maintainers provide a...
- Extend Battery Life: Compatible with all 12V lead-acid, flooded, AGM, and...
- Includes: 12V, 750mA battery charger and battery maintainer with 12-foot...
Perfect for budget-conscious buyers who only need to maintain a single motorcycle or ATV battery. The 750mA output and 5-year warranty are plenty for light use, and it has over 49,000 positive ratings.
Best for Wet Conditions: Battery Tender 800 SuperSmart
- All the charging characteristics of the Battery Tender Junior...
- Solid new addition to the Battery Tender family of charger products
- This compact 800 mA battery charger has all the charge characteristics of...
Choose this one if your charger will live in a damp garage, on a boat, or exposed to the elements. The fully encapsulated epoxy resin design protects it from moisture, shock, and vibration at 800mA.
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