Compact Car Battery Chargers That Fit Any Glovebox
The NOCO Boost Plus GB40 leads our list for most drivers because it packs 1000 amps into a pocket-sized unit that can jump start a V6 or V8 engine, and it doubles as a power bank for phones and tablets. Its main limitation is that it is not a full battery charger; it only provides a boost to get you running, not a slow recharge to fully top off a depleted battery.
A dead car battery always happens at the worst time. Whether you left your lights on or the battery is just old, a compact jump starter or charger can save the day. These small devices fit in your trunk or under the seat, and they are much safer than traditional jumper cables.
We compared seven of the most popular portable compact battery chargers on Amazon. Each one is small enough to take with you, but they differ in power, features, and price. Read on to find the one that fits your vehicle and your habits.
What we recommend
NOCO Boost Plus GB40
The NOCO Boost Plus GB40 is a compact lithium jump starter that can start dead batteries on cars, trucks, and SUVs with gas engines up to 6 liters. It also charges phones and tablets with its USB port. Owners report it holds a charge for months and is easy to use with its simple clamps and LED status indicator.
Pros
- Compact and lightweight at 2.4 pounds
- Built-in LED flashlight with emergency modes
- Safe to use with spark-proof and reverse polarity protection
Cons
- Not a full charger, only provides boosts
- Clamps feel a bit cheap
Schumacher SL1313
The Schumacher SL1313 is a compact and affordable jump starter that is perfect for motorcycles, lawn mowers, and small cars. It delivers 300 peak amps and includes a USB port for charging devices. Its small size makes it easy to store in a saddlebag or glovebox, and it has a built-in light for emergencies.
Pros
- Very low price for a jump starter
- Tiny footprint fits almost anywhere
- Simple one-touch operation
Cons
- Only suitable for engines up to 3 liters
- No case included
GOOLOO GP2000
The GOOLOO GP2000 is a powerful yet compact jump starter with 2000 peak amps, capable of starting diesel engines up to 8 liters. It features a rugged design with a dust and water resistant housing. Owners appreciate the large LCD screen that shows battery status and the multiple safety protections.
Pros
- Can jump start large trucks and diesel engines
- LCD screen with battery level and voltage
- Includes 12V port and USB ports for accessories
Cons
- Heavier than other compact models
- Not as pocketable
NOCO Boost HD GB70
The NOCO Boost HD GB70 is a larger version of the GB40, with 2000 amps of peak current. It can jump start gas engines up to 8 liters and diesel engines up to 6 liters. It is still portable enough to fit in a backpack, but it is heavier. It has a robust design with a built-in work light and advanced safety features.
Pros
- High power for larger engines
- Rugged construction with water resistance
- Can charge two devices simultaneously
Cons
- Price is on the higher side
- Bulkier than smaller models
DBPOWER 800A
The DBPOWER 800A is a very small and lightweight jump starter that still packs 800 amps of peak current. It can start up to 6.5L gas or 5.0L diesel engines. Its slim profile makes it easy to store in a door pocket or under the seat. It also has a fast charging USB-C port and a bright LED flashlight.
Pros
- Extremely compact and lightweight
- Fast charging via USB-C
- Includes a storage pouch
Cons
- Lower peak current than others
- Not for very large engines
Battery Tender 022-0201
The Battery Tender 022-0201 is a compact 4.5 amp battery charger and maintainer that is designed for motorcycles, ATVs, and small vehicles. It is not a jump starter, but it fully charges and maintains your battery. It is small enough to mount on a wall or store in a drawer. Owners use it to keep seasonal vehicles ready to go.
Pros
- Fully charges and maintains batteries
- Automatic shut off prevents overcharging
- Works with AGM and flooded batteries
Cons
- Requires a wall outlet
- Not for emergency jump starting
Beatit BT-D11
The Beatit BT-D11 is a compact jump starter with 800 amps of peak current. It features a wireless charging pad on top, so you can charge compatible phones by placing them on the unit. It also has multiple USB ports, a 12V port, and a bright LCD screen. It is a good all in one emergency tool.
Pros
- Wireless charging for phones
- Multiple output ports
- Clear display shows battery level
Cons
- Charging pad can be slow
- Not as rugged as some competitors
Side by side
| # | Model | Peak current | Best for | Score | Price |
|---|---|---|---|---|---|
| 1 | NOCO Boost Plus GB40 | 1000 amps | Most drivers | 9.4 | Check price |
| 2 | Schumacher SL1313 | 300 amps | Motorcycles and small cars | 8.7 | Check price |
| 3 | GOOLOO GP2000 | 2000 amps | Trucks and large SUVs | 9.2 | Check price |
| 4 | NOCO Boost HD GB70 | 2000 amps | Heavy duty use | 9.1 | Check price |
| 5 | DBPOWER 800A | 800 amps | Compactness | 8.5 | Check price |
| 6 | Battery Tender 022-0201 | 4.5 amps | Maintaining battery health | 8.8 | Check price |
| 7 | Beatit BT-D11 | 800 amps | Value with extras | 8.3 | Check price |
How to choose
Frequently asked questions
Can a compact jump starter fully charge a battery?
No, a jump starter only provides enough power to start the engine. It does not recharge the battery. After a jump start, drive the vehicle for at least 20 minutes or use a proper battery charger to fully recharge the battery.
How long does a portable jump starter hold its charge?
Most lithium-ion jump starters lose some charge over time. They typically hold a charge for 3 to 6 months when not in use. It is a good idea to recharge your jump starter every few months to keep it ready.
What size jump starter do I need for a V8 engine?
For a V8 gas engine, look for a unit with at least 1000 peak amps. The NOCO GB40 is often sufficient for V8s. For larger or diesel engines, consider 2000 amp models like the NOCO GB70.
Are portable chargers safe to use?
Yes, when used correctly. Modern units have safety features such as reverse polarity protection and spark proof technology. Always connect the clamps to the correct terminals and follow the manufacturer’s instructions.
Can I use a battery charger on a lithium battery?
No, most standard battery chargers are designed for lead-acid batteries. If you have a lithium battery, you need a charger specifically designed for lithium chemistry. Check your battery type before using any charger.
How long does it take to charge a car battery with a compact charger?
A compact charger like the Battery Tender 022-0201 outputs 4.5 amps. A typical car battery has 50 amp hours. It can take up to 12 hours to fully charge a depleted battery. Smaller batteries take less time.
Can a jump starter charge my phone?
Most jump starters come with USB ports that can charge phones, tablets, and other USB devices. They act like a power bank. Check the output current to ensure it is compatible with your devices.
What is the difference between peak amps and cranking amps?
Peak amps is the maximum current the device can deliver in short bursts. Cranking amps is a measure of how much current a battery can supply at 32 degrees Fahrenheit for 30 seconds. Jump starter ratings are not directly comparable to battery cranking amps, but higher peak amps generally mean more starting power.
The verdict
For most people, the NOCO Boost Plus GB40 is the best choice because it offers a great balance of size, power, and reliability. If you drive a large truck or diesel vehicle, step up to the NOCO Boost HD GB70 for extra power. If you primarily need to maintain a battery, the Battery Tender 022-0201 is a solid charger. For a budget option, the Schumacher SL1313 is adequate for small engines. Choose based on your vehicle’s requirements and how you plan to use the device.
