This looks like the ultimate all-in-one car gadget. The main feature of the Utrai JS-30 is the jump starter – basically a portable battery that can start your car if the battery’s flat, so you don’t need another vehicle. But it’s also a tyre inflator, a work light, a power bank, and it even includes a little OBD scanner that can read engine fault codes and show basic battery info on your phone over Bluetooth.
It comes in a semi-hard case with a bunch of accessories – the charger itself, jump leads, a DC car outlet adapter, USB-A to USB-C charging cable, the tyre inflator hose and valve adapters, instruction manuals, the OBD scanner, and even a pair of work gloves. There’s no 12V car adapter to charge the unit though.
It’s made from fairly lightweight plastic – perfectly functional, but it doesn’t have the same reassuring, premium feel you get from more established brands. It weighs 1193 g (42.08 oz) and measures 232 x 122 x 57.6 mm (9.13 × 4.80 × 2.27 “).
A long press of the power button turns on the unit. The display is large, clear and bright and shows the battery charge level, measured tyre pressure and tyre pressure preset. The M button cycles through the 5 presets. You can adjust the tyre pressure with the + and – keys which should really be the other way around. Only the fifth custom mode saves any changes you make. And usefully this mode and its custom value is remembered even after the unit has been turned off. You can also change units with a long press of the M button.
The hose screws into the unit and there’s a convenient quick release lever for a standard Schraeder car tyre. You can use this in combination with the supplied Presta adapter on a bike tyre. I did my standard test, inflating a car tyre from 45 to 50 PSI. The PSI reading was within one PSI of my Milwaukee Tyre Inflator and Topeak pressure gauge which is good.
You start the pump with the Pump button. Inflation took 1 minute 42s which is about average compared to several battery tyre inflators I tested in my roundup article and video. There’s a link on screen and down below to that video if you’re interested. You wouldn’t want to inflate a tyre from flat with this pump. At this pressure it’s only rated for 8 minutes of continuous use before a 10 minute rest so you’d be there a while.
There’s also a spotlight that comes on with a single press of the light button, and a white floodlight that comes on with a second press. A third press turns on a white SOS mode, a forth press a white flashing mode and a fifth press a red flashing mode – handy if you break down on a busy road. A final press turns the light off. Or you can press and hold the light button to turn the light off in any mode. You do need to turn the unit on first to use the light.
The flood light folds out 90° – but there’s no rotation which would have been useful to focus the light on your work more easily. There are two handles that fold out to carry the unit as a light. And these can also be used to rest the light tilted backwards.
Utrai claims the floodlight is 2000 lumens. I can’t measure it precisely – it doesn’t fit in my lumen test chamber. But it’s nowhere near 2000 lumens. Comparing it to my Olight Swivel Pro Max floodlight which I always carry in the car for emergencies, it’s somewhere between that light’s medium and high mode – so between 320 and 650 lumens.
You can see just how bright the Olight’s 1600 lumen Turbo mode is in comparison to the Utrai! And the Olight’s lumen output I have confirmed with my own measurements. Still, it’s a useful feature when it’s the only light you have and it should have decent runtimes.
Utrai doesn’t give an output for the spotlight but it’s very dim – I measured less than 30 lumens – comparable to the LED on your phone.
The jump starter also works as a power bank. There are two USB-A outputs – the fast charging port coloured blue, supports QualComm QuickCharge 3.0 up to 18W and the standard USB-A port has a 12W output.
Neither port will fast charge a modern iPhone like my iPhone 15 Pro Max and drops to 7.5W which is very slow by modern standards. It’s not the most impressive power bank, but it could still be useful in an emergency when you have nothing else.
There is a 12V DC output for use with the included car outlet adapter. This supports up to 10A so over 100W at 12V which I tested with my DC load tester. At over 10A the unit shuts off with an E03 or DC Overload error. You could run a portable fridge like this EcoFlow Glacier.
But you could also use this with a capable car charger adapter like this one to fast charge an iPhone and other devices.
There is a USB-C port but this is only for charging the unit and disappointingly the unit only charges at 18W.
I charged the unit from completely flat and it took 4 hours 45 minutes which is painfully slow. With the unit fully charged I measured the real capacity of the integrated battery with a constant 12.5W, 5V 2.5A load. It ran for just under 4 hours and I measured 49.4Wh.
The quoted capacity is 59.2Wh so that’s an efficiency of 83% which was better than I was expecting.
Before I discuss hopefully the star of the show – the jump starter, I’ll briefly mention the OBD scanner. I don’t know whether many people will use this but it’s a nice little bonus and does appear to work.
The scanner plugs into your OBD port which looks a bit like the old TV Scart sockets. You then download the free YNOBD app on iOS or Android which automatically discovers the scanner over Bluetooth. I had to create an account which seemed a little unnecessary and then provide my car details for the most accurate information. You can see the car battery voltage which will prove useful shortly, and you can scan for any fault codes.
Unusually my VW Transporter doesn’t have any fault codes at the moment so I can’t test that feature. It doesn’t look like you can modify any car settings like I can with my Ross-Tech VCDS. But that’s way more complicated to use – and my version doesn’t work wirelessly. So I still might have the occasional use for this. It does have a couple of paid add-ons but I didn’t test those.
To test the jump starter, I did deliberately run down the battery on my van, and used the OBD scanner live battery voltage reading to try and ensure I didn’t get too carried away.
The jump starter on the JS-30 is pretty basic. Unlike my Gooloo jump starter the protection circuitry is built into the jump leads, and there’s no information on the LCD screen to guide you.
You have to go by the LEDs and the tiny accompanying text on the electronics enclosure.
Also the jump leads are very short – so I had to connect both of them to the battery terminals. It’s usually recommended to connect ground to a suitable grounding point on the vehicle but that’s not possible with these leads. Connect the red clamp to the positive terminal of the battery then connect the black clamp to the negative terminal.
The LEDs should go from flashing alternately green and red to steady green. If you mistakenly clamp the terminals the wrong way around the LED will turn red and beep at you.
With the LED steady green, you should be able to start your engine. It’s as simple as that. You can then unplug the black clamp then the red clamp.
If the battery voltage is too low for the jump starter to detect voltage and automatically engage, you can use the Boost mode. With the clamps connected, press and hold the side button on the protection enclosure for 3 seconds. This overrides the safety checks and forces full power out. Use this with care and make sure the clamps are firmly attached before you force it on.
Utrai claims up to 7000A peak current to start up to 12L engines, but I have no way to confirm that. Still it’s enough to start my diesel van so should be ok for most vehicles.
Overall, at the current discounted price on Amazon, I’d say the JS-30 offers good value – if you’ll actually use the extra features. If you don’t need the tyre inflator or the OBD scanner, I’d personally go for a dedicated jump starter with integrated safety electronics instead.
The Gooloo packs I’ve been using, like the GT3000, have the safety electronics built into the unit itself and a proper LCD screen that tells you what’s going on, which I find more reassuring in use. It’s got me – and a few others – out of trouble many times. I’ve just received the upgraded GT6000 as well, which I’ll be reviewing soon, and I’ll compare this Utrai directly to that in the upcoming video.
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Purchase from Amazon – currently (November 2025) has over £40 off:
UTRAI 7000A 12L Car Battery Booster Jump Starters with Air Compressor: https://amzn.to/3JNabb3
Utrai have provided these codes my viewers! Even with any Amazon deals running they’ve said they should give the best prices – let me know!
UK: 35% OFF code: TECHJS30
US: 44% OFF code: YBMMKDT7
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