I don’t know about you but in the last few years I’ve started carrying around batteries in my bag. Running out of charge is a major problem that seems new. There is however one places where I’ve always been worried about running out of charge – my car battery. I’ve had jumper cables in the car since I started driving and – fingers crossed – haven’t had to use them for a good few years. Jumper cables work well if is have another car to help but what about if you do not?

The 1byone Smart Portable Car Jump Starter aims to solve this problem and provide a good backup for your smart phone as well. The kit consists of a huge 9000mAh battery which has the ability to hook up to included jumper cables start your car as well as a USB port to charge your devices. The battery also has a built-in torch, a LED screen to show the percentage of the battery full and it all comes in its own hard storage case. Charge and store under your car’s seat or in the boot and apart from checking the charge level it is there for emergencies either of the car battery or smartphone kind. I’ve added a USB cable to my case so that I will always be able to charge my phone as well as the car.

Product Information

Price: £66.64

Included in the box: Battery, wall wart charger, crocodile clips and cable and user manual in a shockproof hard storage case.

Retailer: Amazon 1byone jump starter

About Manufacturer: 1Byone

1ByOne is a Chinese consumer equipment manufacturer that makes a very wide variety of devices from door bells and cables to smoke machines. In the UK they sell via Amazon. We have previously reviewed favorably a USB-C hub.

1byone car2

The Ergohacks Evaluation


The battery is accessible to people with diverse abilities.

It is designed to be as simple as possible to use – in the vast majority of cases all you have to do is connect it to your car battery, switch on and turn the key in the car. It also includes a well written manual that explains in text and via a series of pictures how to use it. The manual also covers how to use the battery as a uninterruptible power supply (UPS) to change the battery on your car without loosing the car’s computer’s stored information and goes into detail about the built in protections against overload, overvoltage and connecting it backwards.

Using the battery for to charge a smartphone is very simple – plug in the USB cable and switch on.

The light is a little less intuitive needing a press and hold for three seconds to switch on consistently and then a single short press to start SOS morse coding and another short press to get to high speed strobing. Be aware the light is very very bright and that looking into it for even a second could damage your eyes.

One slight issue I encountered is that the single button protrudes a little. The foam inside the case holds the battery tightly – which is good – but I switched on the light when putting it away without meaning to. If I had done this without noticing it would be possible to drain the battery while in storage. I made a very small nick in the foam of the case so that this cannot re-occur.

Ergonomic Design

The battery has an ergonomic design with rubber coatings, large easy to press buttons and connectors that can be only connected the correct way. It can be used efficiently, comfortably and with a minimum exertion. If you intend to rely on the battery for emergency use it would be sensible to check how to access your car’s battery and that you can do so. The cables for the crocodile clips are only 20cm or so long which means that the battery needs to be within that distance of the batteries. This is not going to be a problem for most vehicles but might for some.

Environment & People

The battery pack has a lithium-ion battery at its heart which will happily take partial discharges and recharges but has a probable lifespan of around 3 years whether it is used every day or if it sits in your boot. There is some controversy involved in the making of lithium ion batteries but the overall impact is probably not too large.

Post use lithium ion batteries can technically be recycled but they are not economic to do so. At the end of its lifespan the battery will probably be land filled.


The battery is very cost effective. It is among the most economic car battery chargers available and although jump cables would be a cheaper option they would be significantly less useful.

1byone battery in a car



Size: 2.4 x  6.9 x 13.3 cm
Size carrying case: 22 x 28 x 5.5 cm
Battery weight: 274g
Case weight (full): 1.05kg
Cable Lengths: 22cm and 27cm
Battery Capacity: 9000mAh
Charging cable length: 110cm

Warranty: 1 year limited warranty


The battery is rated to jump start vehicles of up to 5 litre size engines which includes most cars, small boats, small trucks, motorcycles and lawn mowers. Specifically it has been tested with diesel powered vehicles up to 2.0l and lower displacements (12-Volt), petrol powered vehicles up to 4.7l and lower displacements(12-Volt) and gas powered vehicles up to 4.7L and lower displacements.

If  in doubt check your vehicle before you need it but the chances are that unless you have a very large vehicle you will be able to use the battery.

Each start of your vehicle seems to take about 1% of the battery charge.


If you are driving a car the AA has a list here of what you should have with you. Top of the list is a way to charge your phone to get help, a little later down is a torch and also a way to jumpstart the battery. The 1Byone Smart Jump Starter fulfills all perfectly.

The case is solid, somewhat waterproof and very protective. It fits well under the seat or in the boot and once unpacked is simple to use with instructions that will make sense even if you know little about engines.

If you own a car, you should have one. Put it under the seat and forget about it, but be very glad you have when you need it. Highly recommended.

The review is based on the Smart Portable Car Jump Starter kindly provided by 1ByOne. This post contains affiliate links. First published on 16th September 2015.