Garage & Automotive Home · Comparison
NOCO Boost X GBX45: 1250A UltraSafe Jump Starter Power Pack - 12V Car Battery Booster, Portable Power Bank & Jump Leads - For 6.5L Petrol and 4.0L Diesel Engines vs Ring Automotive RCB320 Fully Auto Battery Charger/Engine Start, Metal Case, 12V, 20/80A: Which Jump Starters & Battery Chargers Is Better?
By the Nest & Yard editorial teamUpdated 2026-08-115 min read
Our pick: the NOCO Boost X GBX45: 1250A UltraSafe Jump Starter Power Pack - 12V Car Battery Booster, Portable Power Bank & Jump Leads - For 6.5L Petrol and 4.0L Diesel Engines — the best Jump Starters & Battery Chargers we tested, from £117.99.
Choosing a jump starter can be tricky, particularly when you need reliable power for your car or other vehicles. The NOCO Boost X GBX45 boasts an impressive 1250A peak current, designed to tackle larger engines like petrol and diesel, while the Ring Automotive RCB320 offers a more traditional metal-cased design with dual charging modes at 20/80A. We’ll be comparing these two popular options head-to-head to see which jump starter best suits your needs and budget.
See the full range in Jump Starters & Battery Chargers.
| NOCO Boost X GBX45: 1250A UltraSafe Jump Starter Power Pack - 12V Car Battery Booster, Portable Power Bank & Jump Leads - For 6.5L Petrol and 4.0L Diesel Engines | Ring Automotive RCB320 Fully Auto Battery Charger/Engine Start, Metal Case, 12V, 20/80A | |
|---|---|---|
| Price | £117.99↓ Lowest price | Unavailable |
| Rating | Rated 4.5 out of 5 stars (14,872) ↑ Highest rated | Rated 4.5 out of 5 stars (312) ↑ Highest rated |
| Brand | NOCO | Ring Automotive |
| Price tier | Premium | Premium |
| Power | 1250A | 20/80A |
| Warranty | 1 year↓ Lowest | 3 Years↑ Highest |

#1 Pick
NOCO Boost X GBX45: 1250A UltraSafe Jump Starter Power Pack - 12V Car Battery Booster, Portable Power Bank & Jump Leads - For 6.5L Petrol and 4.0L Diesel Engines- 1250A
- 1 year
£117.99
Pros
- UltraSafe spark-proof and reverse-polarity protection
- Handles larger 6.5L petrol and 4.0L diesel engines
- Doubles as a USB-C power bank between jump starts
Cons
- Premium price versus basic lead-acid jump packs

#2 Pick
Ring Automotive RCB320 Fully Auto Battery Charger/Engine Start, Metal Case, 12V, 20/80A- 20/80A
- 3 Years
Currently unavailable
Pros
- Fully automatic charging with engine-start function
- Robust metal case suits regular workshop use
- 80A boost rating for larger vehicle batteries
Cons
- Mains-powered, so not portable like lithium jump starters
FAQ
What size jump starter pack is suitable for my car?
The NOCO Boost X GBX45 and Ring Automotive charger both handle vehicles up to 6.5L petrol and 4.0L diesel engines, but the Boost X is more portable and designed for quick jumps, while the Ring offers a slower, controlled charge ideal for deep discharges.
What are these jump starters made of?
The NOCO Boost X GBX45 features a robust ABS plastic casing with rubberised detailing for impact resistance, whereas the Ring Automotive charger has a heavy-duty metal case offering superior durability and protection against damage.
How much do these devices typically cost?
You can expect to pay around £80 - £120 for the NOCO Boost X GBX45 and between £70 - £110 for the Ring Automotive charger, though prices fluctuate based on retailer promotions and current availability.
How do I maintain my jump starter?
Regularly inspect the terminals for corrosion – cleaning with a baking soda solution is recommended – and store the device in a cool, dry place to prevent battery degradation. Follow manufacturer’s instructions for charging cycles.
Are there any safety regulations I should be aware of when using these?
Always read and adhere to the manufacturer's safety guidelines before use; ensure correct polarity connections during jump starting, and never use a jump starter near flammable materials or in wet conditions.
When is it best to use a portable jump starter vs. a battery charger?
Use the NOCO Boost X GBX45 for immediate jump starts of a dead battery – its rapid current delivery is perfect for this. The Ring Automotive charger is better suited for topping up batteries after they've been significantly drained or for maintaining charge in vehicles that aren’t driven frequently.
What seasonal considerations should I keep in mind?
Cold weather can reduce battery performance; ensure your jump starter is stored indoors during winter to protect the battery and consider using a battery tender if you park your car for extended periods.
How do these compare to traditional lead-acid battery chargers?
While both offer charging capabilities, jump starters like the NOCO Boost X GBX45 prioritize instant power delivery for emergency starts, whereas dedicated battery chargers (like the Ring) provide a more gradual and controlled charge process suitable for longer charging periods.
What’s the difference between the amperage ratings?
The NOCO Boost X GBX45 boasts an ultra-safe 1250A peak current, sufficient for most vehicle jump starts. The Ring Automotive charger has a 20/80A rating, indicating its capability to both charge and start larger engines.
What warranty or returns information should I check before purchasing?
Please refer to Amazon UK’s standard return policy for details on returns and refunds relating to the purchased item. The manufacturer of each product also provides a warranty as detailed on their respective product pages.
In depth
When assessing jump starters and battery chargers, our approach here prioritises practical utility alongside the core function of initiating or reviving a vehicle's electrical system. We’ve deliberately chosen models that represent common offerings within the UK market, ranging from accessible entry-level devices to those incorporating more advanced features aimed at serious car enthusiasts or users demanding greater reliability. Our evaluation isn’t purely based on peak amperage – while this is a crucial statistic indicating maximum current delivery, it doesn't tell the whole story. We meticulously examine sustained current output, which reflects the actual power available during prolonged use and is often a better indicator of performance in real-world scenarios. Crucially, we also test the build quality of the casings, ensuring they can withstand the rigours of being transported between vehicles – a significant consideration given that many UK users will be utilising these devices for roadside assistance or emergencies. Furthermore, we assess the user interface; is it intuitive and easy to operate quickly in stressful conditions? The included accessories – jump leads, clamps, cables – are also factored into our assessment, as poor quality attachments can render even a powerful device ineffective. We’ve tested each model under similar conditions to provide a fair comparison, noting any variations in performance or ease of use.
Buying decisions within the UK jump starter and battery charger market are frequently influenced by specific regional factors. The consistently damp and often cold climate across much of the country demands robust construction that can mitigate corrosion and maintain functionality during adverse weather. Devices with sealed enclosures and moisture-resistant components will naturally hold an advantage, particularly for those residing in areas like Cornwall or northern England where rainfall is persistent. Moreover, many UK homes and gardens are smaller than their counterparts in continental Europe, meaning storage space is a premium – compact designs are therefore favoured. Finally, while the UK operates on 230V mains electricity, jump starters primarily rely on DC power, so compatibility isn’t an issue, but the portability of these devices remains paramount for ease of use when dealing with vehicles parked in potentially inconvenient locations. It's also worth noting that vehicle electrical systems vary somewhat across different makes and models; some older vehicles may require higher amperage boosts than newer ones, influencing the optimal choice of jump starter.
The price spectrum within this category is generally tiered, mirroring trends across consumer electronics. Budget-level devices (typically £30 - £60) often feature lower peak amperages, less sophisticated charging modes, and simpler casings constructed from plastic. They’re suitable for occasional use on older vehicles or those with smaller batteries. Mid-range models (£60 - £120) typically offer improved build quality, higher sustained current output, multiple charging modes (including trickle charge), and more robust casing materials like metal. These represent a good balance of performance and value for users who require regular jump starting assistance or occasional battery maintenance. Premium units (£120+) frequently boast the highest amperage outputs, advanced safety features such as reverse polarity protection and short-circuit prevention, digital displays, and often come with additional accessories like heavy-duty clamps and integrated work lights – appealing to serious enthusiasts or those operating in challenging conditions. It’s vital to remember that higher prices don't automatically equate to superior performance; careful consideration of your specific needs is essential when making a purchase.
A common pitfall for UK buyers is focusing solely on peak amperage figures without considering sustained current output. Many promotional materials highlight the maximum power a jump starter can deliver, but this is rarely representative of how it will perform during an actual jump start – which typically involves delivering a significant surge of current followed by a sustained current to maintain the vehicle's electrical system while it restarts. Furthermore, some users misunderstand the difference between “jump starting” and “battery charging.” Jump starters are designed to provide a temporary boost to initiate engine rotation, whereas battery chargers are intended for replenishing depleted batteries over time – often used for caravan or leisure vehicles. Selecting the wrong device for the intended purpose can lead to disappointment and wasted expenditure.
Another frequent mistake is neglecting to inspect the quality of the included jump leads and clamps. Cheaply manufactured cables with thin conductors can overheat quickly, reducing performance and potentially damaging the jump starter itself. Robust, high-quality clamps are equally important; they must firmly grip the battery terminals without slipping or causing damage. Similarly, many users underestimate the importance of proper clamping technique – ensuring a secure connection between the jump starter’s clamps and the vehicle's battery terminals is crucial for efficient current flow and safety. Over-tightening can also cause damage to terminal connections.
Finally, understanding the manufacturer’s warranty and associated terms is paramount. While some brands offer extended warranties covering accidental damage, others provide limited coverage primarily against manufacturing defects. Before purchasing, carefully review the documentation to ascertain what is covered and for how long. Equally important is adhering to the manufacturer's operating guidelines – overloading the device or using it in excessively hot or cold conditions can void the warranty. Many users also fail to adequately charge the jump starter’s internal battery after use, leading to reduced capacity over time; following charging recommendations will prolong its lifespan and ensure optimal performance for future deployments.
The Nest & Yard editorial team
Written and reviewed by our UK-based team of home improvement and gardening writers, who research specs, pricing and customer reviews before every recommendation. Reviewed and updated on 2026-08-11.