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Courtland J. Carpenter
2025-08-31 17:58:54
Clever device giving an advantage for using a popular and often cloned generic battery. Dewalt power tools are popular with the brand and many tools and batteries are made using that design. There are chain saws, leaf blowers, robotic sweepers, fans, lights, and other devices. Since I have a number of different sized of their batteries, and this even supports the two most popular voltages 20V and 60V and delivers a 13.5 Volt boost it makes for a convenient jump starter. The device is simple to use much more so than typical jump starters. You simply slip in the battery, and the device lights green. Connect it to the car battery and it will tell you with steady or flashing green lights if it's charging or ready to start. The red lights will tell you if the battery you're using is dead and will also indicate if you connected the jumpers to the wrong polarity. Lithium batteries come in various sizes and the key one here is current or Amperage. I have a fairly large one that delivers 9A at 20V or 3 at 60V. It should be 80 percent charged to provide a good starting current. If the battery is down significantly or it's very cold, you can swap out the Dewalt battery and continue charging.I like the convenience, but you do have to provide the battery which can get expensive, but if you use Dewalt tools you may have one or more in stock. If you do not, you'll have to buy a battery or two, and also a charger. One improvement I could get behind for a bit more money but should be reasonable is to make you able to either use the device as a plug-in charger, or better yet provide a cigar lighter auto type plug in to charge the device when the car is running. Thats just a suggestion for improvement, but it's pretty good right now for those with the Dewalt brand of tools and some extra batteries. If you only want it for at home, you can keep it inside and keep the battery on the charger ready to use. It's as easy to use as a set of jumper cables without needing the second car. Recommended.
Mike Jones (currently still tippin')
2025-08-04 12:17:40
On a fully charged 20V DCB205 5AH 20V DEWALT battery for our small SUV—Will jump start the car's dead battery, from your more common culprits like leaving headlights on overnight.Will slowly revive/jump that same battery when traditional methods with jumper cables are ineffective. This is more of a rare occasion, perhaps a weekend camping trip. When you've overstrained the car battery by charging your electronic devices or using it as a power source for too long :(
sharkey
2025-07-30 12:39:48
I haven't tried this on a car (or needed to thank goodness), but it worked very well on my lawnmower. The battery had enough power to light up the controls, but would not turn over the mower engine. This little jumper cranked it right up. Not sure how effective it would be for a completely dead car and hope I never have to test it.
MyOpinion
2025-07-15 12:07:29
This comes in handy when needing something small in my drill bag. It attaches to the battery with a snack. Easy to disassemble too. I tried this out on my truck and it stated it right up. I haven’t tried on something where the battery is too dead, but I’m sure it’ll do the job. I’m content with it.
T H
2025-06-17 16:05:01
Calling this a jump starter is a misnomer: what this does, it transfers some of the DeWalt tool battery charge to a typical 12V car battery so that, between this device and the car battery’s recovered amperage, the car engine stands a chance to start. The instructions describe how this device signals there’s enough of a charge to the car battery to attempt a start. Thus, this device relies on a working car battery. On its own, I doubt it provides the jolt needed for a car start – I don’t have enough risk tolerance to test this, as DeWalt batteries are not cheap, nor is the car circuitry.The built of this device looks sturdy, as much as a plastic case can provide in sturdiness. The battery connecting clamps have good, strong springs for a reliable contact. The 11AWG wires are clear give-away that this device on its own cannot crank a car’s starter: these wires take 10Amps, one order of magnitude lower than the current required even by the smallest car starters.The instructions this comes with are brief and clear, written in good English. But there are no technical parameters provided, and the product description on amazon is only stating: “Ideal for mid-size cars, light pickup trucks and light recreational vehiclesâ€. No further tech details like cranking amps nor any technical limitations. For a device one would rely on in an emergency, this lack of technical details is quite bothering. I still feel compelled to rate this device high for its usefulness, and the fact that it does work in the described conditions.
Gabriel
2025-04-28 16:17:37
La verdad no funciona lo conecto y no pasa la corriente necesaria para encender el carro
Nate
2025-03-15 09:02:15
For the price point it’s great. Works on my Harley 103†and my Land Rover V-8..
Tim Bowsher
2024-12-23 15:11:06
Always have Dewalt batteries on the truck, figured this would be a better idea for jumpstarting than a regular pack that tend to get forgotten about and are dead when you need them. From the initial looks I figured it was just a battery holder with a pair of leads off it. When I got it I noticed an LED light. Figured that was a simple polarity light, I was wrong. There is some circuit board in this. Put a volt meter on a battery, attached it and checked the leads. There are safeties built into this. The leads are not hot unless connected to a battery.There are 2 ways to use it according to the instructions. Either just hook it up and go. Given the light gauge of the leads for this I am going to say this will give a tiny boost. The other is connect and wait 3-5 minutes. I'm sure this is where it is charging the battery to bring up a low battery. Both of these are going to be for an otherwise good battery that is low. If you have a truely failed battery, I don't see this working for you.
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