NOCO Boost GB70 review
NOCO Boost GB70: 2000A UltraSafe Jump Starter Power Pack – For 8.0L Petrol and 6.0L Diesel Engines
By Tom Calder
The GB70 is NOCO's mid-large Boost size: built to the same spark-proof, reverse-polarity-protected standard as the smaller GB40 but rated for meaningfully bigger engines. It costs more than most drivers need, so it's worth checking your engine size against the GB40 before paying the difference.
- Best for
- Drivers who need to cover a bigger diesel - a van, 4x4 or larger family car - as well as ordinary petrol cars, in a pack that still fits in a glovebox.
- Skip it if
- Your only vehicle is a small petrol car
as of 4 Nov 2026, 20:07 GMT · Details
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.We earn a commission if you buy through the retailer links on this page. It doesn't change our verdict. How we make money →
Researched, not used. We haven't used this product. This review is built from the maker's specifications, owner reports and our own sizing.
What we like
- NOCO states coverage up to 8.0L petrol and 6.0L diesel engines - enough for most vans and 4x4s, not just small cars
- Spark-proof clamps and reverse-polarity protection make it safe for a non-mechanic to connect correctly in the dark
- Doubles as a USB power bank (via USB-A out) and 400-lumen, 7-mode LED torch with SOS/strobe
Worth knowing
- Noticeably dearer than NOCO's entry GB40, which is enough jump-starter for most single petrol cars
- 56Wh lithium pack shouldn't be left in a hot car through summer or a cold shed over winter - keep it somewhere temperate between uses to protect battery lifespan
ⓘ As an Amazon Associate, PreparedBritain earns from qualifying purchases. We may earn a commission when you buy, or a fee when you request a quote, through our links. When two products are close, commission can decide which one we pick. A clearly better product always wins. Amazon prices come from Amazon's own product data and show the date and time they were retrieved. Prices at other retailers are checked by us, less often. Prices and stock can change at any time, so always check the retailer's price before you buy.
Our review
The GB70 is a 1.9kg lithium jump pack, by NOCO's spec sheet, with a 56Wh battery, rated by the maker for petrol engines to 8.0 litres and diesels to 6.0 litres on 12-volt lead-acid batteries. What matters most is that engine coverage in a door-pocket case: it reaches van and 4x4 diesels that the small Boosts do not, without stepping up to the bigger GB150. It suits a household running a larger diesel beside a petrol car.
What the numbers mean
2,000A is NOCO's peak current. The figures to match to your vehicle are the engine ratings, petrol to 8.0 litres and diesel to 6.0 litres, stated on NOCO's product page and spec sheet. Behind them sits a 56Wh lithium-ion battery, good for up to 40 jump starts on one charge by NOCO's count. It works on 12-volt lead-acid batteries only: no 24V lorries and, NOCO's guide says, no other battery chemistry. The Boost detects a battery down to 2 volts and lights a white LED when ready; below 2 volts a three-second press on Manual Override forces it on, with the protections switched off.
In a UK power cut and on the road
The USB-A output is 5V at 2.1A, about 10W, which NOCO says is good for up to six smartphone recharges. More useful is the 12V XGC socket, rated at 15A, which NOCO says will run a tyre inflator or a small inverter; see our tyre inflators. In a power cut that socket can feed a 12V broadband router through the right barrel lead: by the site's planning method (90% depth of discharge, 85% efficiency, 10W self-draw) a router averaging 8.5 to 14.1W runs for 2 to 2.5 hours, and a CPAP on blower alone for 1.5 to 3 hours. That is an evening's reserve, not a night's; see running medical equipment in a power cut. The 400-lumen torch has seven modes, including SOS and strobe.
How it compares
Within NOCO's range the Boost X GBX75 is the modern alternative: 2,500A peak, rated to 8.5-litre petrol and 6.5-litre diesel engines, a 74Wh battery and 60W USB-C Power Delivery in and out, so it charges a laptop. The GB150 goes bigger, 3,000A peak, 9.0-litre petrol and 7.0-litre diesel from 88Wh, for engines past the GB70's limit. The Boost+Air AX65 carries the same engine ratings with a built-in compressor on a 31.8Wh battery. The 1,000A GB40 covers 6.0-litre petrol and 3.0-litre diesel engines from 24Wh; all are on the comparison.
Living with it
Charging is slow by current standards. The USB-C input is 5V 2.1A, about 10W: NOCO's table gives 7 hours from a 2A source and 14 from 1A. The 12V XGC lead in a car socket charges at 3A (36W): NOCO's spec sheet says 3 hours and its guide 2 to 3. A full charge is 0.056kWh, about 1.5p at the Ofgem price cap unit rate of 26.32p per kWh for October to December 2026. It measures 222 by 152 by 70mm, is IP65 with the port covers closed, and comes with the XGC 12V adapters, an extension cable, a USB-C cable and a storage bag. NOCO's warranty is one year, though its guide says UK buyers may be covered for at least two.
Safety
NOCO's 2025 guide sets operation at -20°C to 50°C, charging at 0°C to 40°C and storage at -20°C to 50°C with a daily average of 0°C to 25°C, and says the unit is meant to be stored indoors. A boot in July or a shed in January can fall outside it. Manual Override disables the spark-proof and reverse-polarity protection, and NOCO warns that improper use can cause injury and voids the warranty, so use it only with the clamps confirmed on the right terminals. Do not jump a frozen or damaged battery, and wear eye protection. Our lithium battery fire safety guide and how to jump start a car cover the rest. At 56Wh it flies as hand luggage without airline approval under CAA rules.
Our verdict
Buy it if your biggest engine is a diesel between about 3 and 6 litres, a van, 4x4 or large estate, in a pack you will actually keep in the car. Buy the GBX75 instead if you want USB-C charging both ways, and the GB40 if everything you own is a petrol car. Skip it if you have a 24V vehicle; the GB70 is 12V only.
A researched review, built from the maker's specs, manual and UK listings; facts checked 21 Oct 2026. Sources: NOCO — Boost GB70 product page; NOCO — GB70 tech specs; NOCO — GB70 User Guide & Warranty (PDF, 2025); Rotronics (UK distributor) — NOCO Boost GB70 product information (PDF); UK Civil Aviation Authority — items allowed in baggage (lithium batteries and power banks); Ofgem — energy price cap unit rates and standing charges (1 October to 31 December 2026).
Who shouldn't buy this
Don't buy it if your only vehicle is a small petrol car - NOCO's cheaper GB40 (1000A, up to 8.0L petrol claim scales down accordingly, realistically small-to-mid petrol cars and diesels to ~3.0L) covers that job for less. Step up to the GB70 only if you regularly need to start a larger diesel, van or 4x4.
Key specs
| Peak current | 2000A peak (manufacturer figure) |
| Engine coverage | Petrol ≤8.0L · diesel ≤6.0L |
| Capacity | 56Wh lithium-ion, 1.9kg, 222 x 152 x 70mm |
| Extras | 400-lumen 7-mode LED torch |
This is a Researched review: we haven't used this product. We check every specification against at least two independent sources, re-check the UK price on a schedule where we can track it automatically, and say plainly who it isn't for. Commissions never change a rating.
If this isn’t the one
Best for A compact glovebox backup that gets a flat petrol car or small diesel going without waiting for a breakdown van.
as of 4 Nov 2026, 20:07 GMT · Details
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.
Best for Drivers who want one mid-size jump starter that covers most family cars and small diesels, rather than buying NOCO's biggest (and priciest) unit just in case.
as of 4 Nov 2026, 20:07 GMT · Details
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.
Best for Households with a bigger petrol car, 4x4, van or light diesel, who want one unit that both starts the car and doubles as a genuinely useful USB-C power bank.
as of 4 Nov 2026, 20:07 GMT · Details
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.Questions
Can the NOCO GB70 start a diesel van?
NOCO rates it for diesel engines up to 6.0 litres on a 12-volt lead-acid battery, which takes in ordinary UK panel vans and pick-ups. 24V trucks are outside its range.
How long does the NOCO GB70 take to charge?
About 7 hours from a 2A USB source and 2 to 3 hours from a car's 12V socket through the XGC lead, by NOCO's figures. The USB-C input is limited to 5V 2.1A, so a fast phone charger will not speed it up.
How many jump starts does the GB70 give per charge?
Up to 40, according to NOCO, from its 56Wh battery. NOCO also says no more than five attempts in fifteen minutes, then a fifteen-minute rest.
Can the GB70 jump start a 24V lorry or a lithium battery?
No. NOCO's guide says the GB70 is for 12-volt lead-acid batteries only and is not suitable for any other type. For 24V vehicles see the VTOMAN V-Truck or SIP Rescue Pac on our comparison page.
Free alerts for your home
Home Alerts emails you when a power cut, a Met Office warning or a flood warning covers your postcode. Free for your own home. Sign up in a minute.
Start free →