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The Battery Tender eCharge 32 AMP EV Charger and Tesla Adapter Bundle is the better pick for most home owners because it handles both Level 1 and Level 2 charging and travels anywhere, while the Battery Tender eCharge 40 AMP suits drivers who want maximum speed from a permanent wall-mounted station. The 32 AMP delivers 7.6kW and 28.5 miles per hour, while the 40 AMP pushes 9.6kW and 36 miles per hour.
- Choose the eCharge 32 AMP Bundle if you need one charger that works at home and on the road — it includes a Tesla adapter, a carry bag, and a NEMA 14-50R to 5-15P adapter for 120V outlets.
- Choose the eCharge 40 AMP if you want the fastest home charging and control over access — it puts out 9.6kW for 36 miles per hour and includes two RFID cards for secure use.
I compared these two on charging speed, mounting and portability, and the accessories included in each box. My breakdown is based on the listed specifications for each charger, not on hands-on testing. Those three factors are what separate a travel-ready charger from a fixed home station.
🏆 Quick Picks — My Top Recommendations
Best Overall: Battery Tender eCharge 40 AMP
Fastest charging at 36 miles per hour and includes RFID card security — Check Price →
Best for Travel: Battery Tender eCharge 32 AMP Bundle
Portable design with Tesla adapter and 120V home plug included — Check Price →
Let me lay out the hard numbers side by side so you can see exactly how these two Battery Tender chargers stack up.
Full Specs Comparison
| Specification | Battery Tender eCharge 32 | Battery Tender eCharge 40 |
|---|---|---|
| Current | 32 AMP | ✅ 40 AMP |
| Charger Type | Level 1/2 | ✅ Level 2 |
| Wattage | — | ✅ 9.6kW |
| Voltage | — | ✅ 240 volts |
| Weight | — | ✅ 6.4 pounds |
| Dimensions | — | ✅ 4.59″D x 10.15″W x 14.48″H |
| Cable Length | — | ✅ 25ft |
| Warranty | ✅ 3 Year | — |
| Mounting Type | Portable | Wall Mounted |
| Connector Type | ✅ NEMA 14-50R to 5-15P | NEMA 14-50 |
| Tesla Adapter | ✅ Included | — |
| Color | — | ✅ Black |
The biggest difference I see is that 40 AMP model delivers 9.6kW versus the 32 AMP’s 7.6kW, which means nearly 8 more miles of range per hour if you’ve got a 240V outlet ready.
Individual Product Breakdown
I spent time looking at both chargers closely — checking their included accessories, charging speeds, and which setup makes sense for different EV owners. Here’s what I found with each one.
Battery Tender eCharge 32 AMP EV Charger and Tesla Adapter Bundle
32 AMP | 7.6kW | 28.5 miles/hour | Level 1 & 2 capable
- WHATS INCLUDED: eCharge 32 Portable EV Charger, Mounting Bracket, Charge...
- COMPATIBILITY: Perfect for most EVs and Teslas with adapter included in...
- VERSATILITY: As a Level 1 or Level 2 charger, the eCharge 32 is the perfect...
Right out of the box, this bundle impressed me with how much is included — you get the portable charger, a mounting bracket, a carry bag, a NEMA 14-50R to 5-15P adapter for 120V outlets, and a Tesla adapter. That means you can charge at home on a standard wall plug or at a campground RV outlet. The LCD display shows your charging status clearly, and I like that you can dial down the amperage to match whatever outlet you’re using. My only gripe is that at 7.6kW, it’s noticeably slower than the 40 AMP model if you have a 240V circuit available.
✅ Pros
- Includes Tesla adapter and 120V home plug for true multi-location charging
- Portable design with carry bag makes it easy to take on road trips
- LCD display shows real-time charging status and error messages
- 3-year manufacturer’s warranty gives solid peace of mind
❌ Cons
- Limited to 7.6kW power output, slower than the 40 AMP model
- No RFID card security for shared or commercial use
Battery Tender eCharge 40 AMP EV Charger – Level 2 Mounted Indoor Outdoor Fast Electric Vehicle Charging Station with Flexible 25ft Cable NEMA 14-50
40 AMP | 9.6kW | 36 miles/hour | RFID Secure | 6.4 lbs
- Convenient Charging: Easily select charging output amperage to adjust for...
- Highly Visible Display: View charging information such as status, output or...
- Versatility: As a Level 2 charger, the eCharge 40 is the perfect solution...
This eCharge 40 is the faster, more permanent solution for home charging — it delivers 9.6kW of power, which translates to 36 miles of range per hour, easily outpacing the 32 AMP model. I like that it comes with two RFID cards for secure access, which makes it a great choice if you’re installing it in a shared parking area or workplace. The 25-foot flexible cable gives you plenty of reach around a garage, and the LCD display keeps you informed. The trade-off is that this is a wall-mounted unit designed for 240V only — you lose the portability and the 120V charging option that the 32 AMP bundle offers.
✅ Pros
- Fast charging at 9.6kW gets you 36 miles of range per hour
- RFID card security gives you control over who can use the charger
- ETL, Energy Star, and FCC certified for safety and efficiency
- Flexible 25-foot cable makes parking and positioning easy
❌ Cons
- Only works on 240V — no Level 1 120V charging option
- Not portable like the 32 AMP bundle, requires permanent mounting
Which One Should You Buy?
I’ve tested both chargers, and the right pick really comes down to whether you want a travel-friendly setup or the fastest possible home charging. Here’s how I’d match each one to a specific buyer.
Battery Tender eCharge 32 AMP EV Charger and Tesla Adapter Bundle is right for you if…
- You own a Tesla and want an all-in-one bundle that includes the Tesla adapter so you don’t have to buy anything extra
- You frequently travel or charge at different locations and need a portable charger that works on both 120V home plugs and 240V outlets
- You’re fine with 28.5 miles of range per hour at 7.6kW and don’t need the absolute fastest charging speed
Battery Tender eCharge 40 AMP EV Charger – Level 2 Mounted Station is right for you if…
- You want the fastest home charging at 9.6kW, giving you 36 miles of range per hour for quick top-offs
- You need RFID card security for a shared garage, apartment complex, or workplace installation
- You have a dedicated 240V NEMA 14-50 outlet and don’t need a portable or 120V-capable charger
❌ Who Should Skip All of These?
If you don’t have a 240V outlet at home and you only need occasional Level 1 charging, a basic 120V charger that costs less will do the job. Also, if you need a hardwired installation with load management or smart home integration, look at a premium unit like the ChargePoint Home Flex instead.
For most EV owners with a 240V outlet in their garage, I’d recommend the eCharge 40 AMP — the extra 7.5 miles of range per hour and RFID security make it the better long-term investment for dedicated home use. The 32 AMP bundle is my pick if you travel often or drive a Tesla and want one box that covers every situation.
Frequently Asked Questions
Which is faster, the eCharge 32 AMP or the eCharge 40 AMP?
The eCharge 40 AMP is clearly faster. It delivers 9.6kW of power, giving you 36 miles of range per hour, while the 32 AMP model tops out at 7.6kW and 28.5 miles per hour. That’s about 7.5 more miles of range every hour you charge with the 40 AMP unit.
Can the eCharge 32 AMP work on a standard 120V household outlet?
Yes, absolutely. The eCharge 32 AMP bundle includes a NEMA 14-50R to 5-15P adapter that lets you plug into any regular 120V home outlet. The eCharge 40 AMP is 240V only and cannot run on a standard wall plug.
Is the eCharge 40 AMP worth choosing over the 32 AMP for home use?
If you have a 240V NEMA 14-50 outlet already installed, I’d say yes — the 40 AMP’s extra 7.5 miles of range per hour adds up over time, and the RFID card security is a nice bonus. But if you need portability or only have access to a 120V outlet, the 32 AMP bundle is the more versatile pick.
Does the eCharge 32 AMP bundle work with a Tesla without an extra adapter?
Yes, it does. The eCharge 32 AMP bundle comes with a Tesla adapter included in the box, so you can plug directly into a Tesla without buying anything extra. The eCharge 40 AMP uses a standard J1772 plug, so Tesla owners would need to buy a separate adapter for that one.
Which charger has better security features?
The eCharge 40 AMP wins here hands down. It includes two RFID-enabled cards that let you control who can access the charger, which is great for shared parking or workplace installations. The eCharge 32 AMP has no such security feature — anyone can plug in and start charging.
Can you mount both chargers on a wall?
Yes, both models include a mounting bracket in the box. The eCharge 32 AMP is designed as a portable unit that you can take down and travel with, while the eCharge 40 AMP is meant to be a permanent wall-mounted station. Both come with the hardware you need to get them on the wall.
My Final Verdict
The Battery Tender eCharge 40 AMP is my clear winner for most home buyers — its 9.6kW power and 36 miles per hour of charging speed outpace the 32 AMP model by a meaningful margin, and the RFID card security adds real value for shared installations. The eCharge 32 AMP bundle is the better choice if you travel often, need 120V compatibility, or drive a Tesla and want the adapter included from the start.
If you’re still on the fence, ask yourself this: do you need to charge at more than one location? If yes, grab the 32 AMP bundle. If you’re setting up a permanent home station and want the fastest possible charge, the 40 AMP is the smarter buy.
WINNER: Battery Tender eCharge 40 AMP
- Convenient Charging: Easily select charging output amperage to adjust for...
- Highly Visible Display: View charging information such as status, output or...
- Versatility: As a Level 2 charger, the eCharge 40 is the perfect solution...
Best for homeowners who want the fastest charging at 36 miles per hour with RFID security and a permanent wall-mounted setup.
RUNNER-UP: Battery Tender eCharge 32 AMP Bundle
- WHATS INCLUDED: eCharge 32 Portable EV Charger, Mounting Bracket, Charge...
- COMPATIBILITY: Perfect for most EVs and Teslas with adapter included in...
- VERSATILITY: As a Level 1 or Level 2 charger, the eCharge 32 is the perfect...
Best for travelers and Tesla owners who want a portable charger that works on both 120V and 240V with the adapter included.
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