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the size and weight compact have had the opportunity to use it and worked great first time on my 4x4 Patrol in fact i now use it to lengthen my phone life
Verified purchase: Yes | Condition: New
I bought the larger 89800mAh unit as it was recommended it would start a utility diesel engine. I first charged the unit and tried the accessories. When I plugged the phone charger in, it shorted out and turned the unit off. Ended up cutting random plugs off and after 3, found the one with the issue (iphone). New cable needed. Tried the DC adapters and none of them worked (negative side disconnected) - new connectors needed. Once charged, I tried to start a small diesel generator. Eventually it cranked over and started - 66% left of the onboard battery. I did notice the red terminal was hot, so I let it cool before the next test. Next I tried my old Hilux 2.4L petrol - should be no problem. It hadn't been started in a while, but it normally starts the second go after a jump and fuel down the carbie. Connected the unit, fuel and cranked. Tried to kick and failed. More fuel, second go and it tried to kick and ran out of battery. Once again, I noticed the read lead was really hot. So I charged it fully again, let the terminal cool and tried with a full pack. This time however, after the third go I saw smoke and it was the red terminal. The terminal fell of the charger cable! After letting it cool, I opened the plastic protector and all that's in there is a crappy circuit board with 5 or 6 schottkey diodes soldered to the tracks as well as the main in/out wires! No heat sink, no terminals. Just rubbish. As a last ditch effort, I thought I'd test the capacity and yes it was no where near the rated capacity. 89800mAh discharging at 2A should last approx 44.9hrs. I use my Chinese current conversion table (1/10 of any rating) so it will most likely last 4.49hrs. I hooked it up to a constant current load at 2A and sure enough, 4.3hrs at 2A. So not only will it not start a small engine, it wouldn't be anywhere near the rated capacity to start a 3L diesel. Did I mention dangerous? At this point I give it a 1 only because the lights worked. Other than that it's completely missed the markRead full review
Verified purchase: Yes | Condition: New
It works! Instant start. You won't regret buying one! It might save you from getting stuck if you've left your headlights on. Great peace of mind. I bought one of these three months ago, and have only needed to jump start a car once: we had already unsuccessfully tried jump starting the car several times (I think it was a Ford Mondeo or Ford Focus) using a large SUV with its engine revving at 3000 rpm. The Ford didn't start. We then unplugged the SUV and instead tried the power bank. The Ford started *instantly*. I think the power bank used about 10 percent of its charge to do the jump start. ***Make sure you get familiar with the instructions first: a safety procedure is to *not* connect the jumper clips to the power bank until you have _already_ connected the jumper clips to the battery. The reason is that if you do it in the opposite order, you might get big sparks if you connect live jumper clips to the battery, which can be a fire hazard, as car batteries can release hydrogen gas. The socket on the power bank is designed so that the positive and negative contacts are each inside an insulating tube which physically separates them by plastic (not an air gap) before electrical contact is made. [This is the reason that when you use regular jumper cables, the instructions should tell you to connect the red cable first, then connect the black cable to the donor battery, and finally connect the black cable to a metal point on the car away from the battery, so that the spark is not near the battery]. Another reason to read the instructions well is that not all the functions, sockets, and buttons are intuitive, even for technically-minded people. (e.g. the part labelled jump start looks like a button you press to deliver the current. In fact it is a rubber cover which you pull open to reveal the socket for the jumper clips). If you can't start your car, you might be already in a hurry, anxious or flustered. Most people probably won't work out how to use it intuitively, even if they have jump started cars using regular jumper cables many times. Also the instruction booklet is physically small, the printing is very small, and the English grammar is not extremely good. All this means that if you haven't read the instructions, and get into an emergency, you might get quite frustrated. Charge Retention: The percentage charge indicator is very handy. Mine is four months old, and while it's been three weeks since I recharged it after jump starting the Ford, it's still on 100 percent. I think you might expect it to go down by about 5 percent per 2 months when new. Performance will slowly degrade over time, with heat exposure, or by draining its charge to close to zero. I keep my car under cover at home, I use sunshades when parked in the sun, and keep the power bank under a panel in the luggage compartment too keep it as cool as I can. If your car interior gets hot, I suggest keeping it in the coolest part of your car, (e.g. some cars have hidden compartments in the luggage area) or in the spare wheel compartment, as heat degrades batteries over time. What's included: It comes in a handy case, with lots of accessories. Although the wall charger unit has a 2-round-pin wall plug, my unit arrived with an international adaptor for my country (Australia) in the packaging, provided by the vendor, (I bought mine from bg27cyf: I assume that other vendors would also provide the correct international adaptor for you). It has a cigarette lighter plug also. The housing is rugged and waterproof. Extra functions: These are a bonus, as you probably bought this as a jump starter. It works well as a flashlight. It's brighter than a phone flashlight. Reading the instructions first will help, to learn how to operate the different flashlight modes. It is also handy as an emergency phone/tablet charger. It comes with a phone charger cable with multiple plugs: Lightning (iPhone), Micro-USB (Android/Samsung), and the older 30-pin Apple dock (iPhone 3/4). (It does not have the newer USB-C plugs, however). From memory I think my iPhone 5S gained about two percent of charge for every one percent from the power bank. I have not tried out charging a laptop PC with it. It does not have charging plugs for Mac laptops (magsafe or USB-C). ============== SUMMARY Pros: - These units are fantastic and might save you when you're stuck with a flat car battery! - *Instant* jump starting, unlike jumper cables - Retains charge well - Well designed, rugged, waterproof, smaller than jumper cables - Lots of accessories - Flashlight and phone charger also handy Cons: (All of the cons are minor). - Compared to jumper cables, you need to charge it every so often - Using it requires you to have read the instructions. It's not all that intuitive. - The instructions are small and the printing is tiny - The packing foam in the case is not attached and often falls out.Read full review
Verified purchase: No
The unit arrived in a complete package. The unit immediately worked and started a car with a dead battery .There are not too many similar products able to do that. The owner of the car is an elderly woman who simply followed the directions and started her car.
Verified purchase: Yes | Condition: New
Keep it in my car. Living out of town I hate relying on people when things go wrong
Verified purchase: Yes | Condition: New