Best Jump Starter Under £100
Finding a reliable jump starter under £100 is easier than ever, with modern lithium-ion packs offering enough punch to restart a dead battery without breaking the bank. We've analysed specs, owner feedback, and brand reliability to find the five best options for UK drivers.
Quick answer
The best jump starter under £100 is the NOCO Boost Plus GB40 for its proven reliability, safety features, and ability to start engines up to 6.0L petrol. For a budget-friendly option, the Stanley J5C09 is a solid choice with a useful battery voltage indicator.
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- Tested on specs (power, torque, PSI)
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Research updated June 2026.
NOCO Boost Plus GB40
Compact, powerful, and packed with safety features.
| Product | Best For | Peak Amps | Rating | Price |
|---|---|---|---|---|
| NOCO Boost Plus GB40 | Best Overall | 1000A | 4.7/5 | Under £100 |
| Stanley J5C09 | Budget Pick | 500A | 4.4/5 | Under £100 |
| Antigravity XP-1 | Compact Design | 600A | 4.5/5 | Under £100 |
| Beatit BT-D11 | Safety Features | 800A | 4.3/5 | Under £100 |
| Audew 2000A | High Power | 2000A | 4.4/5 | Under £100 |
NOCO Boost Plus GB40
Best OverallPros
- Spark-proof technology and reverse polarity protection
- Compact and lightweight design
- High owner satisfaction ratings
Cons
- Only one USB port for charging devices
- Case can feel a bit slippery
The NOCO Boost Plus GB40 is a benchmark in the portable jump starter market. It delivers 1000 peak amps, enough to start a 6.0L petrol or 3.0L diesel engine multiple times on a single charge. Its safety suite is comprehensive, including spark-proof technology, reverse polarity protection, and an integrated LED flashlight with emergency strobe modes.
Owner reviews consistently highlight its reliability, with many users reporting successful jumps on cars, SUVs, and even some light trucks. The build quality is robust, and the included micro-USB charging cable is a standard convenience. It is a proven performer that justifies its status as the top pick.
Stanley J5C09
Best Budget PickPros
- Very affordable price point
- Built-in battery voltage indicator
- Includes a storage case
Cons
- Lower peak current limits engine size
- Plastic build feels less premium
The Stanley J5C09 is a no-frills jump starter that focuses on the essentials. With 500 peak amps, it is best suited for smaller petrol cars and compact diesels. The integrated battery voltage indicator is a helpful feature for checking your car battery's health without a multimeter.
Owner feedback notes that it works reliably for its intended use, but it may struggle with larger engines or in very cold conditions. The included storage case is a nice touch for keeping it tidy in the boot. For the price, it offers good value for drivers with smaller vehicles.
Antigravity XP-1
Most Compact DesignPros
- Extremely small and lightweight
- High quality build with a soft-touch finish
- Can jump start without a battery (dead battery mode)
Cons
- Lower peak amps than some rivals
- Premium price for the size
The Antigravity XP-1 is designed for maximum portability. It is one of the smallest jump starters on the market, easily fitting in a glovebox. Despite its size, it packs 600 peak amps and features a unique "Dead Battery Start" mode that allows it to jump a battery with zero voltage.
Owner reviews praise its build quality and convenience, though some note that it is better suited for smaller to mid-sized cars. The soft-touch casing feels premium, and the integrated LED light is bright. It is the perfect choice for drivers who prioritise saving space.
Beatit BT-D11
Best Safety FeaturesPros
- Multiple safety protections (spark-proof, reverse polarity)
- Good power output for the price
- Large LED display shows battery level
Cons
- Bulky compared to other models
- Clamps feel a bit cheap
The Beatit BT-D11 is built with safety as a priority. It features 10 built-in safety protections including spark-proof technology, reverse polarity alerts, and over-current protection. The large LED display clearly shows the remaining battery level, which is more informative than simple LED indicators.
With 800 peak amps, it can handle most petrol and diesel engines up to 6.0L or 3.0L respectively. Owner reviews are positive about its reliability, though some mention the clamps could be sturdier. It is a strong contender for those who want extra peace of mind during a jump start.
Audew 2000A
Highest Peak PowerPros
- Very high peak current for large engines
- USB-C input for faster charging
- Good value for the power output
Cons
- Brand is less established than NOCO or Stanley
- Some units reported with inconsistent charge levels
The Audew 2000A is for drivers who need maximum power without spending over £100. It claims 2000 peak amps, making it suitable for large V8 petrol engines and big diesel trucks. It also features a USB-C port for recharging the unit itself, which is a modern convenience.
Owner reviews are generally positive, with many praising its ability to start large vehicles. However, some users have noted occasional inconsistencies in battery level readings. For the price, it offers an impressive power-to-cost ratio, but brand reliability is not as proven as the top picks.
What to Check Before Buying a Jump Starter Under £100
Choosing the right jump starter involves understanding your vehicle's needs. The most important specification is peak amperage. A small petrol car may only need 400-600 peak amps, while a large diesel van could require 1500 or more. Always check your engine's size and type before buying.
Battery type is also critical. All the units on this list use lithium-ion batteries, which are lighter and hold their charge longer than older lead-acid types. Look for a unit with safety features like reverse polarity protection and spark-proof technology to avoid damage to your car's electronics.
Mistakes to Avoid When Buying a Jump Starter
A common mistake is buying a unit with too low a peak amperage for your engine. This can lead to frustration when the unit fails to start your car. Always aim for a unit that exceeds your engine's minimum requirements by at least 200 amps.
Another mistake is neglecting to check the unit's charge level regularly. A jump starter that has been sitting in a boot for six months may have lost its charge. Make it a habit to recharge the unit every three months to ensure it is ready when you need it.
FAQs
Can a jump starter under £100 start a diesel engine?
Yes, many models like the NOCO GB40 and Beatit BT-D11 can start diesel engines up to 3.0L. For larger diesels, look for units with higher peak amps like the Audew 2000A.
How long does a jump starter hold its charge?
Most lithium-ion jump starters will hold a charge for 6 to 12 months. It is recommended to recharge them every 3 to 6 months for best performance.
Is it safe to use a jump starter in the rain?
No, you should never use a jump starter in wet conditions. Most units are not waterproof and using them in rain poses a risk of electric shock or damage.
Can I use a jump starter to charge my phone?
Yes, most jump starters include USB ports for charging phones, tablets, and other small devices. They can double as a portable power bank.
What does peak amp mean on a jump starter?
Peak amps represent the maximum current the unit can deliver in a short burst. It is the most common rating for comparing jump starter power.
How do I connect a jump starter safely?
First connect the red clamp to the positive battery terminal, then the black clamp to an unpainted metal ground. Start the car and disconnect in reverse order.
Will a jump starter damage my car's electronics?
Modern jump starters with reverse polarity protection and spark-proof technology are safe. They are designed to prevent damage to sensitive electronics.
Can I jump start a car with a completely dead battery?
Some models like the Antigravity XP-1 have a dead battery mode that can start a car with zero voltage. Standard models may require a small amount of residual charge.
What size jump starter do I need for a 2.0L petrol car?
A unit with 400-600 peak amps is usually sufficient for a 2.0L petrol engine. The Stanley J5C09 or NOCO GB40 would be good choices.
Are cheap jump starters worth buying?
Yes, many jump starters under £100 offer excellent value. The key is to choose a reputable brand and check that the amperage matches your vehicle's needs.
How do I maintain my jump starter?
Keep it in a cool, dry place and recharge it every three months. Avoid exposing it to extreme temperatures or dropping it.
Can a jump starter be used as a power source for tools?
No, jump starters are not designed to power tools. They are meant for short bursts of high current to start engines and for charging small devices.
Our verdict
The best jump starter under £100 is the NOCO Boost Plus GB40, offering a proven balance of power, safety, and reliability for most vehicles. For budget-conscious buyers, the Stanley J5C09 provides a solid, no-frills option for smaller cars. Both represent excellent value in this price bracket.