What is the best lithium-ion jump starter on the market today? That’s what we will answer in this top 5 review round up.
There’s certainly a wide range of choices available. And with differing power capacities, budgets and add-ons (flashlights, USB sockets and more) it can be difficult deciding on which model to opt for.
To help you, we have taken 5 top rated chargers to suit all wallets to bring you the ultimate low down.
For our findings at a glance head to the table below. For in depth reviews on each of our choices, plus a detailed buyer’s guide, keep on reading.
Best Lithium-ion Jump Starter
1000A Jump Starter,
LCD Display, Flashlight
BEST BUDGET PICK:
NOCO Genius Boost
1000A, 12V UltraSafe
Lithium Jump Starter
Max 6.5L Gas/
BEST PREMIUM PICK:
400 Amp Lithium Ion
CCA of 400A
Max 5L Gas 2.5L Diesel
CCA of 300A
Lithium-ion Jump Starter Reviews
There are different models, qualities, and types of jump starter LiB in the market today. Even so, they can be rated based on their build quality, materials used, lifespan, added extras and of course overall value for money.
What follows are our top 5 picks, we have an overall winner, a top pick budget option and our best buy premium choice.
1. TOP PICK: Rugged Geek RG1000 Lithium-ion Jump Starter
The Rugged Geek RG1000 is a high-performance, portable lithium-ion jump starter battery that can crank gasoline-powered vehicles with an engine capacity of 7,000cubic centimeters(cc) or 7 liters, as well as diesel cars with engine capacities not exceeding 3.5liters (L).
This smartphone-sized LiB has an extraordinarily high power-to-weight ratio, which allows it to serve as a dual-purpose LiB – as a jump starter battery and a consumer-grade power supply.
It also comes with 2 USB charging ports with each port delivering 5volts at 2.1amperes, which allows for fast charging of mobile phones.
There is also a 12-volt laptop charging port. Likewise, because of its portability, compact build, and high energy density, it can be used to jump start boat engines.
This model is encased in a hard air-tight shell; and is designed and made by Rugged Geek, a company started by technology enthusiasts.
This lightweight portable device weighs about 15.8ounces, and is 6.3inches long, 2.9inches wide, and 1.3inches thick. Its power rating is 39W.h, which is equivalent to 3250mA.h.
It has a CCA of 1000Amps. It can also serve as a battery booster pack to top-up the car LA battery charge. It also comes with a 3-in-1 USB cable that features both USB-C and micro-USB ports.
There is also a digital LCD panel that displays charge level and output voltage.
This model allows one to select the laptop charging port voltage output from 3 options; 12volts, 16volts, or 19 volts.
This model also comes with Intelliboost technology which ensures that power is only delivered to the car battery when it is safe to do so.
This serves to make the jump starting procedure a safe exercise. Intelliboost is enclosed in a smart device that plugs into the LiB, and on the other end issues the 2 jump leads, with each lead terminating into an insulated alligator clip.
Even so, these alligator clips fit poorly on the terminals of some LA starter batteries. The thick jumper cables encase 8-gauge thick electric wire, and to prevent short-circuiting, the wires are well-insulated with safe, spark-proof insulation sheath.
The Rugged Geek RG1000 is a high-performance portable lithium-ion jump starter battery that can crank gasoline-powered and diesel-powered engines with effective total capacities of 7L and 3.5L respectively.
This smartphone-sized LiB has an extraordinarily high power-to-weight ratio, which allows it to serve as a dual-purpose LiB – as a jump starter battery and a consumer-grade power supply for charging mobile phones and laptops.
In our opinion, the reliable high-performance along with its durable build quality, makes the Rugged Geek RG1000 the best lithium ion jump starter on the market today.
2. BEST BUDGET PICK: NOCO GB40 Genius Boost Plus
This budget-priced, high-performance and durable jump starter LiB can deliver 1000A of CCA; and is designed to crank gasoline and diesel engines whose engine capacities are 6L and 3L respectively.
It is a compact, portable model whose high energy density allows it to serve 2 functions; to jump start vehicles and to charge consumer electronics such as mobile phones and laptops.
Its design build is IP65 compliant, and it comes with rubber covers that seal the charging ports when they are not in use.
This model is encased in a hard air-tight shell; and is designed and made by NOCO, (its model number is GB40).
Versatile USB function
There are 2 USB ports, a USB IN that allows the LiB to be charged with a powered USB device, and a USB OUT port that allows this battery to provide steady power to mobile phones and laptops.
The USB OUT port delivers 5volts at 2.1amperes which allows for fast charging of mobile phones. This model can also be used to jump start boat engines.
This compact, portable LiB weighs about 2.4pounds, which makes it much heavier than the Rugged Geek RG1000. The NOCO GB40 is 8.3inches long, 4.6inches wide, and 4.1inches thick.
It is can also serve as a battery booster pack to top-up the car LA battery charge. There is also 4 indicator lights that notify one on the state of charge of the battery. Its color scheme is black.
Its thick jumper cables feature safe, spark-proof insulation sheaths. The unit It also benefits from a 12-months warranty.
The NOCO GB40 Genius Boost Plus is a favorably-priced, high-performance and durable jump starter LiB that can deliver 1000A of CCA; and is designed to crank gasoline and diesel engines whose engine capacities are 6L and 3L respectively.
Its high power-to-weight ratio allows it to serve two purposes: to jump start car batteries, and to operate as a consumer-grade power supply for charging mobile phones and laptops.
It has a CCA of 1000A. Its great features and power without the price, makes it the best budget LiB model in our top 5.
3. NoOne KPJS001-3 Lithium-ion Jump Starter
This jump starter has a CCA of 800A and a capacity rating of 12600mAh.
It comes with 7 protection features which include protection against overcharge, over-discharge, short circuit, high temperature, low temperature, and wrong connection protection, as well as reverse current protection.
Operationally, it is designed to crank gasoline and diesel engines whose engine capacities are 6.5L and 5.2L respectively.
This portable packs a high energy density that allows it to serve 2 functions; as a jump starter LiB and as a power-bank for charging consumer electronics such as mobile phones and laptops.
As a jump starter battery, it can also crank both vehicle and boat engines.
As a power-bank, it comes with a single USB charging port which can deliver 5V at 2.1A which makes it suitable for fast-charging mobile phones and power banks.
Its hard exterior shell has a smooth finish. This LiB model is designed and made by NoOne.
This affordable model weighs 3.18 pounds; and is 11inches long, 4.9inches wide, and 4.9inches thick. This makes larger and heavier than NOCO GB40, though without providing as much cold cranking amperage.
Nonetheless, this NoOne model is suited to serve as a battery booster pack as it can to top-up the charge in a partially-discharged car LA battery.
It features 5 LED indicator lights for notifying the user about the state of LiB charge. There is also a LCD display for showing the voltage level. Its color scheme is blue and black.
The thick jumper cable feature safe, spark-proof insulation sheaths, which also extend to the handles of the battery clamps.
This LiB also benefits from a 12months warranty.
The NoOne KPJS001-3 is an affordably-priced, high-performance and durable jump starter LiB with a CCA of 800A and a capacity rating of 12600mAh.
It comes with 7 protection features. It is designed to crank gasoline and diesel engines whose engine capacities are 6L and 5.2L respectively.
Its high power-to-weight ratio allows it to jump start car batteries, as well as serve as a consumer-grade power supply for charging mobile phones and laptops.
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4. BEST PREMIUM PICK: Battery Tender, 400 Amp Lithium Ion Jump Starter
This is a high-grade lithium-iron-phosphate jump starter battery with a CCA of 400A, and a battery capacity of 12000mAh.
This is a premium-grade model that can be used in ice-cold (temperature) environments, and sun-baked desert environments (as long as the ambient temperature does not exceed 40 degrees Celsius).
Its cigarette lighter plug supports a maximum current draw of 15A. Its extraordinarily high power-to-weight ratio allows it to operate as a dual-purpose LiB – as a jump starter battery and a consumer-grade power supply.
Even so, it lacks a dedicated USB port, and one needs to use an adapter provided with the battery pack to charge mobile phones and laptops.
It is encased in a hard air-tight shell, which allows it to be used in moist environments, for instance, when charging a boat engine.
This model is designed and manufactured by Deltran Battery Tender as part of its Jump Starter 400 series.
This portable LiB weighs about 6.45pounds, and is 12.6inches long, 10inches deep, and 8.3inches tall. This makes much larger than Rugged Geek RG1000.
Even so, it can serve as a battery booster pack for topping up the charge in partially-discharged LA car battery.
There are indicator lights that show the charging status, as well as notify the user if the jumper leads are connected improperly to the LA battery. Its color scheme is green and black.
The thick jumper cables encase thick electric wires in a safe, spark-proof insulation sheath. This model comes with a 12months guarantee.
The Battery Tender 400A is a high-performance, durable, and reliable lithium-iron-phosphate jump starter battery with a CCA of 400A, and a battery capacity of 12000mAh.
This is a premium-grade model that can be used in extreme environmental tempratures. Moreover, its cigarette lighter plug supports a maximum current draw of 15A.
Its extraordinarily high power-to-weight ratio allows it to operate as a dual-purpose LiB – as a jump starter battery and a consumer-grade power supply. This is the best premium lithium ion jump starter in this review.
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5. WEEGO N22S Jump Starter
This is a compact jump starter with a CCA of 300A and a peak amperage of 1700A.
It comes with built-in protection features including surge protection, anti-spark protection, reverse-polarity, overcharge, over-discharge, and short circuit protection.
It is designed to crank gasoline and diesel engines whose engine capacities are 5L and 2.5L respectively.
Its high energy density that allows it to serve 2 functions; as a jump starter LiB and as a power-bank for charging consumer electronics such as mobile phones and laptops.
In fact, it comes with a micro-USB charging port. Its hard exterior shell has a smooth finish. This model is designed and made by WeeGo.
This durable model weighs 1.63 pounds which makes it lighter than all the models reviewed above, with the exception of Rugged Geek RG1000.
WeeGo N22S is 5.5inches long, 3inches wide, and 0.6inches thick, which makes it a compact, smartphone-sized jump booster.
Even so, this model can serve as a battery booster pack as it can to top-up the charge in a partially-discharged car LA battery. It features 5 LED indicator lights for notifying the user about the state of LiB charge.
On the downside, it comes without an inbuilt flashlight, and this necessitates one to always carry a portable rechargeable torch. This DC torch can even be charged by this LiB.
This LiB also benefits from a relatively long guarantee provided by its 18months warranty.
The WeeGo N22S is a high-quality, high-performance and durable jump starter LiB with a CCA of 300A and comes with inbuilt protection features.
It is designed to crank gasoline and diesel engines whose engine capacities are 6L and 5.2L respectively. On the downside, it lacks an inbuilt flashlight.
Nonetheless, its high power-to-weight ratio allows it to jump start car batteries, as well as serve as a consumer-grade power supply for charging mobile phones and laptops.
Lithium-ion Jump Starter Buyer’s Guide
Push Start or Jump Start, Which is the Better Option?
So what happens when the battery is discharged when one turns on the ignition key? The answer is simple, the starter motor does not run, and neither the spark plug can produce a spark.
Understanding the stroke cycles of the four-stroke IC engine allows one to appreciate why some people push their car so as to crank them up. This procedure is called push starting .
Push start simply means to manually push the vehicle so that the wheels can turn.
These turning wheels can then transfer their rotation motion to the flywheel via a manual transmission system; and the turning flywheel can then rotate the crankshaft which then pushes the engine through the intake to power strokes which allows the engine to start running.
The system for newer vehicles
Even so, this is not applicable to latest vehicles which use automatic transmission whose hydraulic torque converter prevents one from push starting the vehicle as the turning wheels cannot drive the engine. So what can one do in this instance? The most viable option in this case is to jump start the vehicle.
Jump starting (colloquially called boosting) is the method of cranking an engine by connecting the discharged (or dead) battery to another functional battery, which allows for the starter motor and the spark plug to be provided with electrical energy.
As expected, the process of connecting 2 batteries together requires one to use special cables, called jumper cables, that allow the functional battery to charge the dead battery.
This method is more effective than push starting, and it can also be used in vehicles that use automatic transmission.
Even so, the process of jump starting a vehicle requires the car battery to be viable and functional.
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Jump Start Batteries
Now that the merits of jump starting have been described, which batteries can one use to jump start a vehicle.
There are 2 main options; lead acid (LA) starter battery, and a portable starter battery. The LA starter battery is the same as the one in the car, and it is usually cumbersome for one to always carry a fully-charged LA battery whenever (s)he is traveling.
The most viable alternative is to have a compact, lightweight, and portable jump starter battery, and one of the best types of this battery is the lithium-ion battery.
Lithium-ion Jump Starter Battery
This is a secondary, rechargeable starter battery whose positive electrodes are made of intercalated lithium compounds that can accept lithium ions during discharge as the battery jump starts a vehicle.
It is this movement of lithium ions across the electrolyte medium during the charging and discharging process that allows for charge to be stored, and for engines to be jump-started respectively; and for this reason, the battery is designated as a lithium-ion battery (LiB).
This battery has an exceptionally high (electrical) energy density, high energy-to-weight ratio, low self-discharge, and tiny memory effect.
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Self-discharge occurs when internal chemical reactions cause the battery to lose stored charge, and this is minimized in lithium-ion batteries by using a stable electrolyte.
The memory effect describes the phenomenon observed when recharging a partially-discharged battery which causes the battery to hold less electrical charge than its maximum energy capacity.
This is thought to occur because the battery ‘remembers’ the previous charge level and considers it to the maximum energy capacity.
A tiny memory effect means that one can recharge partially-discharged lithium-ion batteries for many cycles without the batteries substantially losing their maximum energy capacity.
Its high energy-to-weight ratio allows it to comfortably generate 3 volts-per-cell as compared to the LA battery cell and the Zinc -carbon dry cell which generate 2.1volts and 1.5volts respectively.
There are different types of LiB and their performance, cost and safety profile varies depending on their construction, functional design, and most importantly, the chemistry of its electrodes and electrolytes.
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Utility of Jump Start LiB
Jump starting a vehicle only allows the engine to start running, but it does not mean that the jump starter battery can be used to power the other electrical devices in the car.
This is usually left to the alternator which generates the required electricity, as well as charges the car LA starter battery.
Likewise, this means that the portable lithium ion battery cannot serve as the sole substitute for a bad battery.
It is therefore advisable that one connects the portable battery to the car battery so that it charges it, and then the car battery can start the vehicle.
A key advantage of using a portable jump starter battery is that it does not transmit alternator issues of one car to another car.
Nonetheless, internal LiB battery issues can affect the quality of jump starting, and in worse case, it can be manifested in the vehicle if it impairs the mechanics of engine start-up and power transmission from the crankshaft to the transmission system via the clutch.
Another important fact to keep in mind is that the lithium ion jump starter battery cannot be used to salvage the situation whereby the car has a bad alternator.
The reason for this is that these lithium ion batteries are not designed to work as deep-cycle batteries but rather to complement starter batteries when starting a vehicle.
Considerations During Jump Starting
As mentioned earlier, for one to jump start any vehicle, there is need to connect to batteries together and this is done by a pair of heavily-insulated jumper cables (also called jumps leads or booster cables) with copper or steel alligator clips attached at either ends of each cable.
The key consideration to keep in mind here is to ensure that the positive terminals of the LiB is connected to the positive terminal of the car starter battery.
The second consideration is to ensure that the jump start LiB has the same voltage rating as the starter LA battery.
The third consideration is that one should never use an LiB to jump start a discharged battery whose electrolyte is frozen as this can result in an explosion; as hydrogen gas that is produced during charging is trapped inside cavities in the frozen electrolyte till it attains sufficient pressure to break through the ice, and this pressure is usually so high as to heat up the flammable hydrogen hence the explosion.
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Most high-quality jump starter LiB are designed as portable jump boxes. A jump box is a single unit that encases the battery that is attached to the jump leads and charging port.
Therefore, one only needs to connect the jump cables to the starter LA battery, and when the LiB charge is low, one only needs to connect it to its charger which is then plugged to the power socket.
Moreover, the jump leads can sense the polarities of the LA battery terminals hence reducing the chances of short-circuiting the starter battery.
The power of jump start LiBs are measured in ampere-hours. This allows one to determine whether the LiB can jump start an engine.
The power needed to jump start an engine is determined by 2 construction factors – the engine type and size – along with an operational factor – the engine temperature. Naturally, as the engine temperature drops, then more cranking power is needed.
Therefore, it is advisable that one checks the cranking power that is listed for starting a cold engine.
This is usually rated as Cold Cranking Amperes (CCA) which describes the current that the battery can provide for 30seconds at 0 degrees Fahrenheit without the voltage dropping below a set value, which is usually 7.2 volts in 12-volt LiB.
For example, a CCA of 400A means that the LiB can sustain a burst of 400amperes for 30seconds at 0°F without its voltage charge dropping below 7.2volts.
How to Choose a Jump Start LiB
Apart from the aforementioned construction, design, and operational descriptions of LiB, one also needs to consider its durability and reliability.
Even though build design and cost are usually the overriding considerations, there is also need for one to consider the features that come with the LiB jump starter.
These features include an inbuilt USB port for charging phones, a flashlight for illuminating in dark environments, and emergency indicator lights that notify one if the jump leads are connected incorrectly or if the charge in the LiB is running very low.