Any1 Jumpstart before using cables?

[Kb27]

21 hours ago, Volvobrick said:

Powerbank, spare lithium batteries cannot be checked in. They are afraid it would explode or catch fire! And make sure the Powerbank capacity is clearly visible to avoid being forced to throw away at the security (at least in some China airports). 

This one can checked in. No batteries, just ultracaps.

I used it a few times already. No problem. Yeah, it even started a 216D (diesel)

[Hamburger]

Strange. How different is that thing from power banks?

[Soundphile]

On 4/10/2020 at 7:30 PM, Volvobrick said:

The capacity is too big to bring on board planes. Max 14000 mAH I think for the 5v power banks. 

This is good info. Didn't know there is a size limit on the powerbank rating. But I did brought 2X 10000mAH ones up on the plane before. never got rejected. I wonder how they do the enforcement..

[Volvobrick]

16 minutes ago, Soundphile said:

This is good info. Didn't know there is a size limit on the powerbank rating. But I did brought 2X 10000mAH ones up on the plane before. never got rejected. I wonder how they do the enforcement..

In Chinese airports (some) they will look at the labels on the power banks. If not indicated, then straight into the bins together with mineral water and lighters. 

[Kb27]

14 hours ago, Hamburger said:

Strange. How different is that thing from power banks?

Power banks use lithium-ion batteries, with its accompanying risks.

Batteryless jump starters use supercapacitors/ultracapacitors. No lithium-ion battery inside.

Typically, you hook the clamps onto the weak battery. As long as the weak battery has min 8v, it will start charging the supercaps until 14V (indicated by LED). Then you crank the engine, and the supercaps dump huge amount of current in a short time, to turn the engine.

https://en.wikipedia.org/wiki/Supercapacitor

Quote

Supercapacitors compete with electrolytic capacitors and rechargeable batteries, especially lithium-ion batteries. 

Supercapacitors can store 10 to 100 times more energy than electrolytic capacitors, but they do not support AC applications.

With regards to rechargeable batteries, supercapacitors feature higher peak currents, low cost per cycle, no danger of overcharging, good reversibility, non-corrosive electrolyte and low material toxicity.

Batteries offer lower purchase cost and stable voltage under discharge, but require complex electronic control and switching equipment, with consequent energy loss and spark hazard given a short.

 

[Hamburger]

Thanks for the info.

 

Did not know jump starters uses different tech all together .

[Hamburger]

So another dumb question.

 

If theoretically there is no battery in a jump starter,  able to bring up plane as it's  basically all capacitors? Unless capacitors of such is also deemed as unsafe in the cargo area.

[Kb27]

4 hours ago, Hamburger said:

So another dumb question.

 

If theoretically there is no battery in a jump starter,  able to bring up plane as it's  basically all capacitors? Unless capacitors of such is also deemed as unsafe in the cargo area.

Airplanes/airlines specifically banned lithium-ion battery of certain power.

Since this has no batteries, it's all capacitors, it's a matter of judgment by them, and arguing about it probably.

If you search ebay, there's no restriction in shipping overseas, by freight forwarders, unlike lithium cells.

[Achtung]

On 4/7/2020 at 2:10 PM, Beregond said:

i saw a hummer starter pack with power bank. like iphone + size.

got the fool prove connector, mean how u connect also wont be wrong. ( but i dun understand the theory ) 

100+sgd i didnt buy, my cable serve me well all these years lol

Ive got cables but sometimes, I am caught in situations depending on how my car is parked. One of my car has vattery in front and the other has battery at the back. If there are cars parked around the weak batt car, it is quite hong kan liao. Thats why batt pack like hummer is useful. Got one and I love it. Did not drive my second car for a week and batt went dead. 

[Volvobrick]

I didn't use my car for a few days. And the battery went flat. My newly bought (less than 2 weeks ago) lithium jump starter did the job well! 

Edited April 20, 2020 by Volvobrick

[Ahseng]

on this topic of jump starting, i got the portable batt that successfully jump start.

After 3 days flat again, my qn is can i just keep kiap the cables from portable batt to car batt (car is not on) like that possible to transfer the charge from the portable batt to car batt?

 

 

[Soundphile]

2 hours ago, Volvobrick said:

I didn't use my car for a few days. And the battery went flat. My newly bought (less than 2 weeks ago) lithium jump starter did the job well! 

 

Wow! You achieved your ROI very fast! 

[Hamburger]

48 minutes ago, Ahseng said:

on this topic of jump starting, i got the portable batt that successfully jump start.

After 3 days flat again, my qn is can i just keep kiap the cables from portable batt to car batt (car is not on) like that possible to transfer the charge from the portable batt to car batt?

 

 

I believe it's a no. 

You either need to recharge your battery or change one totally.

 

I highly recommend you recharge it if it's not an old battery.

[Ahseng]

32 minutes ago, Hamburger said:

I believe it's a no. 

You either need to recharge your battery or change one totally.

 

I highly recommend you recharge it if it's not an old battery.

Bro how to do this recharge battery? Just let car engine run n idle or drive around? My battery is from Sept 2019, consider new right?

Edited April 20, 2020 by Ahseng

[Hamburger]

16 minutes ago, Ahseng said:

Bro how to do this recharge battery? Just let car engine run n idle or drive around? My battery is from Sept 2019, consider new right?

Got this online at alixpress.  Dismoint battery from car and slow recharge  for more than 10hrs depending on size of battery.

 

Battery would be almost as good as new.

 

Wait...this my batt analzer

Edited April 20, 2020 by Hamburger

[Hamburger]

[Kb27]

38 minutes ago, Ahseng said:

Bro how to do this recharge battery? Just let car engine run n idle or drive around? My battery is from Sept 2019, consider new right?

Your battery is new. Electrolyte (specific gravity, or SG) may be weak, which means it can go flat quite fast, when not charged. Weak means it's more like water instead of acid. SG can be checked with a hydrometer.

To restore SG you need to do an equalizing charge typically for a couple of days. That's what I do. It's a charging voltage of 15.8V...and monitoring the battery to make sure it does not overheat.

Your alternator (typically output 14V) does not do that. So no point you run the engine around.

Edited April 20, 2020 by Kb27

[Ahseng]

20 minutes ago, Hamburger said:

Waseh..  hardcore. Batt man.

 battery shop have this service of recharging or not?