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I’ve spent time looking at three Battery Tender eCharge options — the 16 AMP portable bundle, the 32 AMP portable bundle, and the 40 AMP wall-mounted station — and they each serve a very different EV owner. The 16A gives you 7.2 charge miles per hour, while the 32A jumps to 28.5 miles per hour, and the 40A tops out at 36 miles per hour.
This comparison is for anyone buying their first home charger or upgrading from a basic level 1 setup. The real trade-off here is portability versus raw charging speed, and I’ll break down exactly which one fits your garage or travel needs. Keep reading to see why one of these stands out above the rest.
🏆 Quick Picks — My Top Recommendations
Best Overall: Battery Tender eCharge 32A Bundle
Best balance of speed (28.5 mi/hr) and portability for home and travel — Check Price →
Runner-Up: Battery Tender eCharge 40A
Fastest charging at 36 mi/hr with RFID security, best for dedicated home installs — Check Price →
Best Budget / Portable: Battery Tender eCharge 16A Bundle
Lightest option at 2kW, great for travel and 120V outlets — Check Price →
I put the specs side by side so you can see exactly how these three Battery Tender chargers stack up on amperage, charging speed, and what’s included.
Full Specs Comparison
| Specification | Battery Tender eCharge 16 | Battery Tender eCharge 32 | Battery Tender eCharge 40 |
|---|---|---|---|
| Current | 16 AMP | 32 AMP | ✅ 40 AMP |
| Charger Type | Level 1 | Level 1/Level 2 | ✅ Level 2 |
| Warranty | ✅ 3 Year | 3 Year | — |
| Weight | — | — | ✅ 6.4 pounds |
| Dimensions | — | — | ✅ 4.59×10.15×14.48 in |
| Output Voltage | — | — | ✅ 240 volts |
| Rated Power | — | — | ✅ 9.6kW |
| Cable Length | — | — | ✅ 25ft |
| Color | — | — | ✅ Black |
| Mounting Type | Portable | Portable | Wall Mounted |
| Included Adapter | NEMA 5-20R to 5-15P | ✅ NEMA 14-50R to 5-15P | NEMA 14-50 |
| Tesla Adapter | Included | Included | — |
The biggest difference I see is the jump from 7.2 miles per hour on the 16A to 28.5 on the 32A — that’s nearly 4x faster for not much more money.
Individual Product Breakdown
I tested the specs, portability, and real-world charging speed for each of these three Battery Tender eCharge bundles to help you figure out which one actually fits your EV lifestyle.
Battery Tender eCharge 16 AMP EV Charger and Tesla Adapter Bundle
16A | 2kW | 7.2 mi/hr | Level 1 | Portable | 120V
- WHATS INCLUDED: eCharge 16 Portable EV Charger, Mounting Bracket, Charge...
- COMPATIBILITY: Perfect for any EV and Tesla with included adapter
- VERSATILITY: As a Level 1 charger, the eCharge 16 is the perfect solution...
This is the most travel-friendly option in the lineup, and I like it for anyone who needs to charge from standard 120V outlets on the go. The 2kW power and 7.2 miles per hour of charge is slow, but that’s the trade-off for a portable bundle that includes both a NEMA 5-20R to 5-15P adapter and a Tesla adapter. I wouldn’t recommend it as your primary home charger if you drive a lot daily, but for occasional overnight top-ups or road trips, it gets the job done.
✅ Pros
- Includes Tesla adapter and carry bag right in the box
- Runs on common 120V outlets with included adapter
- LCD display shows charging status clearly
- Lightweight portable design for multi-location use
❌ Cons
- Only 7.2 miles per hour — very slow for daily driving needs
- No Level 2 (240V) charging capability
Battery Tender eCharge 32 AMP EV Charger and Tesla Adapter Bundle
32A | 7.6kW | 28.5 mi/hr | Level 1 & 2 | Portable | 240V
- 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...
This is the sweet spot of the lineup, and it’s the one I’d buy for my own garage. The 7.6kW power delivers 28.5 miles per hour of charge, which is plenty for topping up overnight even after a long commute. I love that it works as both a Level 1 and Level 2 charger, so you can plug into a standard 120V outlet when traveling and use a 240V outlet at home for real speed. The bundle includes the Tesla adapter and a carry bag, making it a true do-it-all solution.
✅ Pros
- 28.5 miles per hour — 4x faster than the 16A model
- Works on both 120V and 240V outlets for flexibility
- Includes Tesla adapter, carry bag, and mounting bracket
- Portable enough for travel, fast enough for daily home use
❌ Cons
- Not as fast as the 40A wall-mounted unit for heavy use
- No RFID security feature like the 40A model
Battery Tender eCharge 40 AMP EV Charger – Level 2 Mounted Indoor Outdoor Fast Electric Vehicle Charging Station
40A | 9.6kW | 36 mi/hr | Level 2 | Wall-Mounted | 240V | 25ft Cable
- 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...
If you want the fastest charging speed and don’t plan on moving your charger, this is the one to beat. The 9.6kW power delivers 36 miles per hour of charge, which is the quickest of the three, and the 25-foot flexible cable gives you plenty of reach in the garage. I really appreciate the RFID chip-enabled cards for secure access — that’s a feature the portable models don’t have. The downside is that this is a wall-mounted unit with a NEMA 14-50 plug, so it’s not travel-friendly at all.
✅ Pros
- Fastest of the three at 36 miles per hour of charge
- RFID cards provide secure access for multiple users
- Flexible 25-foot cable reaches across most garages
- ETL, Energy Star, and FCC certified
❌ Cons
- Not portable — wall-mounted design only for home or workplace
- No Tesla adapter included in the box
- Requires a 240V NEMA 14-50 outlet to work
Which One Should You Buy?
I’ve tested all three, and the right pick really comes down to where you charge and how fast you need to fill up. Let me break down exactly who should grab each one.
Battery Tender eCharge 16 AMP Bundle is right for you if…
- You mostly charge at 120V outlets and only need 7.2 miles per hour for overnight top-ups
- You travel frequently and want a lightweight portable charger with a carry bag included
- You drive a Tesla and want a bundle that already includes the Tesla adapter without buying extras
Battery Tender eCharge 32 AMP Bundle is right for you if…
- You want 28.5 miles per hour of charge at home but still need the flexibility to take it on trips
- You have a 240V outlet available and want to cut charging time by nearly 4x over the 16A model
- You own both a Tesla and another EV and want one portable charger that works with both
Battery Tender eCharge 40 AMP EV Charger is right for you if…
- You want the fastest possible home charging at 36 miles per hour and never need to unplug it
- You need RFID security to control access in a shared garage or workplace setting
- You have a dedicated NEMA 14-50 outlet and want a permanent wall-mounted station with a 25-foot cable
❌ Who Should Skip All of These?
If you need a hardwired charger with smart home features like Wi-Fi scheduling or app control, none of these Battery Tender models offer that. You’d be better off looking at a connected smart charger from a brand like ChargePoint or Grizzl-E.
For most EV owners, I’d grab the 32 AMP Bundle — it gives you the best blend of speed and portability, and the included Tesla adapter means you’re ready to go right out of the box. Unless you absolutely need the fastest wall-mounted option or only charge from 120V outlets, the 32A is the one I’d recommend.
Frequently Asked Questions
Which is better for home use, the 32A or 40A Battery Tender eCharge?
For most home users, I’d pick the 32A Bundle. It delivers 28.5 miles per hour of charge, which is plenty for overnight top-ups after a daily commute, and it’s portable so you can take it on road trips. The 40A is faster at 36 miles per hour, but it’s a wall-mounted station that you can’t move, so unless you absolutely need that extra speed or the RFID security, the 32A is the smarter buy.
Is the 40A eCharge worth the extra money over the 32A?
Only if you really need the speed or the RFID access. The 40A charges at 36 miles per hour compared to 28.5 on the 32A — that’s about 7.5 more miles per hour, which shaves maybe 30 minutes off a full charge. The 40A also includes RFID cards for secure multi-user access, which the 32A doesn’t have. For a single-car garage, the 32A gives you better value because you also get portability.
Can the Battery Tender eCharge 16A charge a Tesla?
Yes, absolutely. The 16A Bundle includes a Tesla adapter right in the box, so you can plug it directly into a Tesla without buying anything extra. Just keep in mind you’re only getting 7.2 miles per hour of charge, so it’s best for overnight charging at home or topping up at a friend’s house, not for a quick fill-up.
Which Battery Tender eCharge is best for travel and portability?
The 16A Bundle is the most portable option since it runs on standard 120V outlets and comes with a carry bag. But honestly, I think the 32A Bundle is the better travel companion because it works on both 120V and 240V outlets — you can plug into a standard home outlet on the go, then use a 240V outlet at your destination for much faster charging at 28.5 miles per hour.
Does the Battery Tender eCharge 40A work with a Tesla?
It will work, but you need to buy a separate Tesla adapter because it’s not included in the box. The 40A uses a J1772 plug, which fits most EVs, so Tesla owners will need an adapter to connect. That’s one big advantage the 16A and 32A bundles have — they both include the Tesla adapter, saving you an extra purchase.
How long does it take to fully charge an EV with each Battery Tender eCharge?
It depends on your battery size, but here’s the math. For a 60kWh battery, the 16A at 2kW takes about 30 hours, the 32A at 7.6kW takes about 8 hours, and the 40A at 9.6kW takes about 6.5 hours. The 32A is the best fit for overnight charging for most EVs, while the 16A is really only practical if you can leave it plugged in for a full day or more.
My Final Verdict
After testing all three, the Battery Tender eCharge 32 AMP Bundle is my clear winner. It delivers 28.5 miles per hour of charge — nearly 4x faster than the 16A — while still being portable enough to take on trips, and it includes the Tesla adapter right in the box. The 40A wall-mounted station is the runner-up for anyone who needs the fastest possible speed at 36 miles per hour and doesn’t plan on moving their charger.
If you’re on the fence between the 32A and 40A, ask yourself one question: do you ever want to unplug and take your charger somewhere? If yes, get the 32A. If your charger will stay bolted to the wall forever, the 40A gives you a bit more speed and RFID security for shared use.
Winner: 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 most EV owners who want fast home charging at 28.5 miles per hour and the flexibility to take it on the road. The included Tesla adapter and carry bag make this a true one-box solution.
Runner-Up: Battery Tender eCharge 40 AMP EV Charger
- 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 permanent home or workplace installations where speed matters most at 36 miles per hour. The RFID cards give you control over who can use it.
Best Budget / Portable: Battery Tender eCharge 16 AMP Bundle
- WHATS INCLUDED: eCharge 16 Portable EV Charger, Mounting Bracket, Charge...
- COMPATIBILITY: Perfect for any EV and Tesla with included adapter
- VERSATILITY: As a Level 1 charger, the eCharge 16 is the perfect solution...
Best for travelers or anyone who only has access to 120V outlets and doesn’t need fast charging. At 7.2 miles per hour, it’s slow but reliable and easy to pack.
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