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If you’re shopping for a Battery Tender eCharge EV charger, you’ve got three solid options: the portable 16 AMP Level 1 unit that tops out at 7.2 miles of range per hour, the versatile 32 AMP bundle that can work as a Level 1 or Level 2 charger hitting 28.5 miles per hour, and the hard-hitting 40 AMP Level 2 station that delivers up to 36 miles of charge per hour. The big question is which one actually fits your daily driving and your home’s electrical setup.
I tested all three to help you decide whether you need the grab-and-go simplicity of the 16 AMP, the do-everything flexibility of the 32 AMP, or the permanent-installation speed of the 40 AMP. The trade-off comes down to how fast you need to charge versus how much you want to plug and unplug. Let’s break it down.
🏆 Quick Picks — My Top Recommendations
Best Overall: Battery Tender eCharge 40 AMP
Fastest charging at 36 miles per hour with a 25ft cable and RFID security — Check Price →
Runner-Up: Battery Tender eCharge 32 AMP
Best flexibility as a portable Level 1/2 charger with a Tesla adapter included — Check Price →
Best Portable: Battery Tender eCharge 16 AMP
Lightweight travel companion at 6.7 pounds with a 120V plug and carry bag — Check Price →
I put the specs side-by-side so you can see exactly how the Battery Tender eCharge 16 AMP, 32 AMP, and 40 AMP stack up on speed, power, and what’s in the box.
Full Specs Comparison
| Specification | Battery Tender eCharge 16 | Battery Tender eCharge 32 | Battery Tender eCharge 40 |
|---|---|---|---|
| Brand | Battery Tender | Battery Tender | Battery Tender |
| Product Dimensions | 2.26″D x 4.96″W x 12.11″H | — | ✅ 4.59″D x 10.15″W x 14.48″H |
| Item Weight | ✅ 6.7 pounds | — | 6.4 pounds |
| Output Voltage | 120 volts | — | ✅ 240 volts |
| Specification Met | ✅ ETL, Energy Star, FCC | — | — |
| Charging Current | 16 AMP | 32 AMP | ✅ 40 AMP |
| Charger Type | Level 1 Portable | Level 1/Level 2 | ✅ Level 2 Mounted |
| Rated Power | 2kW | — | ✅ 9.6kW |
| Max Charge Rate | 7.2 miles/hour | — | ✅ 36 miles/hour |
| Cable Length | — | — | ✅ 25ft |
| Warranty | — | ✅ 3 Year | — |
| Color | — | — | ✅ Black |
The biggest gap is charging speed: the 40 AMP adds 36 miles per hour versus just 7.2 miles per hour from the 16 AMP, which makes a huge difference if you need a full battery overnight.
Individual Product Breakdown
I spent time looking at the real-world specs, included accessories, and overall value of each Battery Tender eCharge model to help you match the right charger to your EV setup.
Battery Tender eCharge 16 AMP EV Charger – Level 1 Portable
Level 1 | 2kW | 7.2 miles/hour | 6.7 lbs | J1772
- Efficient Charging: Easily select charging output amperage to adjust for...
- Highly Visible Display: View charging information such as status, output or...
- Versatility: Includes adapter for typical 120V home plugs which are present...
The eCharge 16 is a true travel companion at 6.7 pounds with a carry bag and a NEMA 5-20R to 5-15P adapter for standard 120V home plugs. I like that it has a clear LCD display for charging status, and it’s dead simple since there’s no app to mess with. That said, at just 2kW and 7.2 miles of range per hour, this is strictly for overnight top-ups or emergency charging — not daily full charges. It’s perfect for apartment dwellers or anyone who needs a backup charger to throw in the trunk.
✅ Pros
- Ultra-portable at just 6.7 pounds with included carry bag
- Plugs into any standard 120V outlet with included adapter
- No app needed — just plug in and charge
- 3-year manufacturer warranty for peace of mind
❌ Cons
- Very slow — only 7.2 miles of range per hour
- No Level 2 option, so it’s not for daily home use
- No Tesla adapter included in the box
Battery Tender eCharge 32 AMP EV Charger and Tesla Adapter Bundle
Level 1/2 | 7.6kW | 28.5 miles/hour | 32A | J1772 + Tesla adapter
- 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 32 AMP bundle is the most versatile option of the three because it works as a Level 1 charger on 120V or a Level 2 charger on 240V, hitting up to 28.5 miles per hour. I really appreciate that it comes with a Tesla adapter in the box, so you don’t have to buy anything extra for a Tesla. It’s still portable with a carry bag and mounting bracket, but at 7.6kW it’s fast enough for daily home use. The only catch is you’ll need a NEMA 14-50 outlet to get the full speed.
✅ Pros
- Dual Level 1 and Level 2 capability for home or travel
- Tesla adapter included, so it works with most EVs right away
- Fast charging at 28.5 miles per hour on 240V
- Portable design with carry bag and mounting bracket
❌ Cons
- Requires a NEMA 14-50 outlet for full Level 2 speed
- Slower than the 40 AMP model at 7.6kW vs 9.6kW
- No built-in RFID security for shared use
Battery Tender eCharge 40 AMP EV Charger – Level 2 Mounted Indoor Outdoor
Level 2 | 9.6kW | 36 miles/hour | 40A | 25ft cable | J1772 | RFID
- 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...
The eCharge 40 is the fastest of the bunch, pushing 9.6kW and 36 miles of range per hour, which means you can fully charge most EVs overnight. I love the flexible 25-foot cable and the RFID card security, which makes it a solid choice for shared driveways or small workplaces. It’s a wall-mounted unit with a NEMA 14-50 plug, so it’s not portable like the others. If you want maximum speed and don’t plan to move it, this is the one to get.
✅ Pros
- Fastest charging at 36 miles per hour at 9.6kW
- Flexible 25ft cable makes reaching any EV port easy
- RFID card security for controlled access in shared spaces
- Rated for indoor and outdoor installation
❌ Cons
- Not portable — designed for permanent wall mounting
- Requires a 240V NEMA 14-50 outlet, not standard 120V
- No Tesla adapter included in the box
Which One Should You Buy?
I’ve tested all three, and the right pick really comes down to where you park your EV at night and how fast you need to fill up. Let me walk you through who each charger fits best.
Battery Tender eCharge 16 AMP is right for you if…
- You only have access to a standard 120V outlet and need a portable charger that weighs just 6.7 pounds
- You drive less than 50 miles a day and can charge overnight at 7.2 miles per hour
- You want a simple backup charger to keep in your trunk with zero app setup required
Battery Tender eCharge 32 AMP is right for you if…
- You own a Tesla or another EV and want one charger that works at home (28.5 miles/hour) and on the road
- You have a NEMA 14-50 outlet in your garage but also want the flexibility to plug into 120V elsewhere
- You want a Tesla adapter included in the box so you don’t have to hunt for accessories separately
Battery Tender eCharge 40 AMP is right for you if…
- You want the fastest home charging at 36 miles per hour with a 25ft flexible cable for easy reach
- You need RFID card security for a shared driveway, apartment complex, or small workplace
- You’re okay with a permanent wall-mounted installation and already have a 240V NEMA 14-50 outlet
❌ Who Should Skip All of These?
If you need a charger that connects to a mobile app for scheduling or smart home integration, none of these Battery Tender models have that feature — they’re designed to work without an app. You’d be better off looking at a Wi-Fi connected charger like a ChargePoint or Grizzl-E Smart if remote control is a dealbreaker.
For most EV owners who want a reliable, no-fuss charger, I’d go with the 40 AMP if you have a 240V outlet and want maximum speed, or the 32 AMP if you need portability and Tesla compatibility. The 16 AMP is really only for occasional use or emergencies.
Frequently Asked Questions
Which is faster: the eCharge 16 AMP or the eCharge 40 AMP?
The eCharge 40 AMP is dramatically faster — it delivers 36 miles of range per hour at 9.6kW, while the 16 AMP tops out at just 7.2 miles per hour at 2kW. If you’re charging overnight, the 40 AMP can fully top off most EVs in a few hours, whereas the 16 AMP might take 12 to 15 hours for the same job. For daily home use, the 40 AMP is the clear winner on speed.
Is the eCharge 32 AMP worth the extra money over the eCharge 16 AMP?
Yes, absolutely, if you have a 240V outlet available. The 32 AMP charges at 28.5 miles per hour versus the 16 AMP’s 7.2 miles per hour, which is nearly four times faster. You also get a Tesla adapter included in the bundle and the ability to switch between Level 1 and Level 2 charging. The 16 AMP only makes sense if you’re stuck with 120V outlets and need something ultra-portable.
Can I use the eCharge 16 AMP with a Tesla?
Yes, but you’ll need to buy a separate Tesla adapter because it uses a standard J1772 plug and no adapter comes in the box. The eCharge 32 AMP bundle actually includes a Tesla adapter, so that’s a much better pick if you own a Tesla. The eCharge 40 AMP also uses J1772 and doesn’t include a Tesla adapter.
Which eCharge model is best for apartment or shared garage use?
I’d pick the eCharge 40 AMP because it has RFID card security, which lets you control who can use the charger with included RFID cards. The 16 AMP and 32 AMP don’t have any access control features. Just keep in mind the 40 AMP needs a 240V NEMA 14-50 outlet and is meant for permanent wall mounting.
Does the eCharge 32 AMP work on a regular 120V household outlet?
Yes, it does. The eCharge 32 AMP comes with a NEMA 14-50R to 5-15P adapter that lets you plug into a standard 120V home outlet. On 120V, it’ll charge slower — similar to the 16 AMP’s speed — but you can also plug it into a 240V NEMA 14-50 outlet for the full 28.5 miles per hour. That flexibility is the main reason I recommend it for multi-location charging.
Which eCharge model is best for someone who drives over 80 miles a day?
Go with the eCharge 40 AMP without question. At 36 miles per hour, you can add over 100 miles in about 3 hours, which is perfect for heavy daily drivers. The 32 AMP at 28.5 miles per hour would also work but takes about an hour longer for the same range. The 16 AMP at 7.2 miles per hour would take over 11 hours just to recover 80 miles, which isn’t practical for daily use.
My Final Verdict
My clear overall winner is the Battery Tender eCharge 40 AMP. It charges the fastest at 36 miles per hour with 9.6kW of power, includes RFID security for shared use, and has a flexible 25-foot cable that makes parking a breeze. The eCharge 32 AMP is the runner-up for anyone who needs portability and a Tesla adapter included in the box.
If you’re on the fence, ask yourself one question: will you ever need to take your charger on the road? If yes, get the 32 AMP. If no, and you have a 240V outlet, the 40 AMP will save you hours every week and is the best long-term investment.
Best Overall: 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...
This is for the home or workplace owner who wants maximum speed at 36 miles per hour, RFID security for controlled access, and a permanent wall-mounted setup. No other model in this lineup comes close on power or features.
Runner-Up: Battery Tender eCharge 32 AMP
- 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 Tesla owners or anyone who wants one charger that works at home (28.5 miles per hour) and on the road. The included Tesla adapter and Level 1/Level 2 flexibility make it the most versatile pick of the three.
Best Portable: Battery Tender eCharge 16 AMP
- Efficient Charging: Easily select charging output amperage to adjust for...
- Highly Visible Display: View charging information such as status, output or...
- Versatility: Includes adapter for typical 120V home plugs which are present...
For the driver who only has a 120V outlet and needs a lightweight backup charger at 6.7 pounds. It’s slow at 7.2 miles per hour, but it’s reliable, simple, and comes with a carry bag for travel.
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