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BASEUS 20000mAh Car Jump Starter Pack Battery Booster Charger Power Bank 2000Amp $100.79.
Baseus 1000A Car Jump Starter Power Bank 12000mAh Portable Battery Power Booster $53.59.
Baseus 1600A Car Jump Starter 12V Battery Booster PD 65W Fast Charger Power Bank $83.99 Delivered @ Baseus eBay
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Yes auto start stop doesnt make a difference. Ive used a similar one on mine no dramas
I wonder how it works if your car battery is 100% dead? Can it replace the dead lead acid battery then in order to start the car? And if so, how many times can it do it?
No you cannot do that. it isnt made to be used continuously It can start the car if battery is dead, as it does not charge the battery, it provides alternative power.
The powerbank charges up a huge capacitor, you press a button and it powers the car usually for about 30 seconds and you start it in that time.
Ive used a different brand one to start my car 4 or 5 times and had charge remaining
I understand you can not just replace the lead acid battery with it. What I mean is that - if your completely dead lead acid battery in the car is incapable of charging, can it move the starter directly without any assistance from the car battery? Looks like it can from your reply, and charge lasts for a couple of starts of the car.
Yes, I have done this before.
Ah I misunderstood your question. Yes your interpretation is correct, you can start the car multiple times, with the battery completely flat. :)
Yep you absolutely can. The power bank has high discharge (60C) rated batteries inside. It basically connects directly to the cells, so can provide huge current for a short time.
It's basically doing the same as your car battery, just with lower overall capacity. But starting only takes high current for a very short time, so the total power use is small.
The reason why car batteries are not commonly replaced with lithium batteries is because lead acid batteries are relatively chap, tough, and don't mind higher heat in the engine bay, and are less likely to release their energy in a volatile way in a crash. High output lithium batteries also tend not to last as many cycles as a car battery unless expensive.
@Prong: Thanks, great explanation. I just had a situation where my car battery suddenly died and was not able to charge from a charger, so I had to rush to the store and buy one without a proper study of the market and being unable to wait for delivery. So this thing could have saved me allowing to last for extra couple of days.
While capacitor based jump starters exist, this one uses high discharge rated batteries. 60C, according to the eBay listing.
Still has capacitors I reckon, that's what's in the big fat dongle that plugs into it before the jumper cables.
60C wouldn't make sense anyway, you'd need 26ah cells to output 1600 amps directly from the battery
@Boioioioi: The dongle has the protection circuitry for short circuits or reverse polarity. Likely it uses a relay considering the size. Here's a YouTube teardown of a similar one.
https://www.youtube.com/watch?v=I72Ur09407MThe 800A / 1600A rating is how things like jump starters and jump cables are rated. But it is not a continuous rating. It's a rating for matching to the starter motor inrush current rating. It's the same reason why jumper cables might say 800A, when actually carrying that much current for any length of time would result in them melting.
But inrush current only lasts a fraction of a second, and then actual ongoing starter motor current draw is much lower.
I suspect this power bank has a 14.8V (4x 3.7V), 4,000 mAh battery. At 60C, it is rated for 240A - that may be the burst rating, so only for 10 seconds or so max. Or it may be continuous.
Either way, 240A is fine for actually running a car starter motor.
For the fraction of a second starter motor inrush current, the 60C battery will be able to provide much higher current. 1600A for a few milliseconds, 800A for a bit longer. It's not going to help battery longevity, but it's not meant for starting the battery more than occasionally.
Supplying that initial inrush current is important, because extra torque is needed to overcome friction and inertia and start the engine moving. It's once the motor is moving that current drops.
@Boioioioi: Super capacitors with enough energy to start your car would be bigger than would fit in that dongle (basically the size of the whole starter pack).
You can get batteryless super cap starters, though they cost more than one of these li-ion starters. Good thing is you don't have to worry about going to use it only to find the battery is stuffed and won't start anything. They won't store a charge long term like a battery though, so you need to be able to charge them up before use (though doesn't take long) either from another car etc though sometimes your own half dead battery can be enough. I like to think of them more as a "wireless jumper cable" than a battery pack. (and in relation to the original question, I don't think you can use super cap starters as a replacement for a battery like you can with a li-ion one)
How new (or should I say old) are these models?
I've got an older GOOLOO one that I've never had actually use for the jump starting lol (fortunately) so figure may as well lug around something that can also PD charge a computer something … but these are USB-A outputs so devices it can't do PD protocol?I see USB C at the very top left of linked image.
My concern is more so how reliable these devices are. I’m not game to use cheap chargers on my techI’m not game to use cheap chargers on my tech
Wait until it's full price
Ha!
Cheap as in less reputable brands.
I’ve had a bunch of Heymix and Basseus chargers fail (wall and car chargers - not attached to power bank). I’m cautions now :-)This is tempting however for my USB C soldering iron!
interested to see what the new Gooloo replacement is as Gooloo (the 2000amp) ones are no longer offered on amazon from what I can see.
this seems good at that price point
I noticed the gooloo packs have dissapeared from amazon. I've got a GT3000 and rate it highly, except for the somewhat misleading 22,8000 mAh spec which I later reaslised is @ 3.7V (like this baseus)
Baseus seems decent, but a little lacking compared to the gooloo which has power draw reading in watts, 12V cig socket adapter, and 100W usb c charger. also ~$60 more though.
Power bank capacity is given in mAh at 3.7V, as that is the standard used from when pretty much all power banks only used 3.7V internally.
Any reputable power bank (the GT3000 included) gives the Wh rating, which is the standard way to give rate capacity. Wh can be compared to any other Wh rating.
Wh is just voltage x capacity in amps. So 3.7V x 22.8 Ah = 84.36 Wh.
As a comparison, the Baseus power bank from this deal is 59.2 Wh. This is on the eBay listing, along with a real world capacity rating under load, and an efficiency rating. This is much more info than most companies give.
The main issue with that is that the Wh rating alone of the battery is not what you will achieve in the real world. Mostly because of efficiency losses in voltage conversion circuitry, but also because batteries themselves have reduced effective capacity at higher loads. Often a standard is used - for example, AGMs typically rate capacity at a 20 hour rate - which is the load it takes to drain the battery in 20 hours.
Power banks don't tend to include this sort of detail, though Baseus does. They have a rated capacity at 5V, 6A output - 10,500 mAh, which is 52.5 Wh.
They don't give a figure, but at the full 60C rating when jump starting a car, the effective capacity of the batteries will be even lower. But that does not matter too much, since starting is generally quick enough that the total power use for a start is a few Wh at most.Yeah I do understand the sums (hence the 3.7V comment) but fell into the powerbank marketing trap of mAh speced at a voltage they don't actually deliver at. Wh and 3.7v were in the fine print, if at all.
Probably didn't help that I had recently bought large 12.8V lithium battery, whose Ah spec is at actual voltage delivered not that of the individual cells inside.
Gooloo stopped selling on Amazon. They have their own site now, though prices never seem to get as low as they had been on Amazon.
Do these function as BOTH a powerbank (e.g. to charge a mobile phone) and a jump-starter for your car?
Yes
Prices jacked?
Interesting product…. Any this jump start cars with auto start/stop?