Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.


View this topic in a long page with up to 500 replies per page Create new topic
1 | 2 
1223 posts

Uber Geek
+1 received by user: 58


  Reply # 603108 1-Apr-2012 00:21
Send private message

Anyone used one of those little cube things which as I understand plug into cig lighter (and left for period of time like 5 - 10 minutes to transfer charge to car battery) to start flat cat?

I'm off to bed now so don't have time to research their name/brand. I wonder if they are lithium technology?

21730 posts

Uber Geek
+1 received by user: 4514

Trusted
Subscriber

  Reply # 603109 1-Apr-2012 00:25
Send private message

Friend had one, and as all japanese and aussie cars need the key on to liven up the lighter socket, it means that stuff all ends up in the battery.

I did jump a car off my 4S lipo pack for RC toy purposes, and it put about 60A into the battery for a while before calming down to about 20A and it was good to go in about 2 mins when I tried it, so there certainly is merit to the idea. But that was from a battery that was only down to about 9V, not totally depleated.




Richard rich.ms

 
 
 
 


646 posts

Ultimate Geek
+1 received by user: 79

Trusted

  Reply # 603116 1-Apr-2012 01:19
Send private message

Correct method for jumpstarting a vehicle.

http://jgdarden.com/batteryfaq/carfaq6.htm

Makes the best sense to me (ive found several articles that disagree) except that i don't have a problem using the negative terminals on both the donor and stalled engines.

Key suggestions.. turn everything off (stereo, lights, etc) and do give it a couple of minutes before trying to start, to let the dead battery grab some volts first. Ive jumped several vehicles, several times, never come close to having a problem. One time I was jumping a very dead Van battery with a really crappy set of jumper leads (they were getting rather warm) but did succeed after about 10 minutes of running my car up to 4KRPM, trying to get enough charge across to wake up a very flat battery (the batteries are parellel, but the voltages can't be toooo dissimilar if you expect things to work (pulling current across jumper leads is obviously not as efficient as direct from the battery is... and my jumper leads were really too thin. I replaced them after that with nicer, surge-protected ones.)




2785 posts

Uber Geek
+1 received by user: 122


  Reply # 603722 2-Apr-2012 12:13
Send private message

I have one, it works well. Haven't had to use it on my own car, but I saved someone else who was stranded at the supermarket. Was $50 or somesuch from one of those daily deal sites about a year back.

I've got a bi-monthly reminder alarm on my phone to plug it into the mains & recharge it. It seems to hold a charge pretty well.

+1 to the AA membership though, has saved me a couple of times - more than paid for itself in potential lost time.






18920 posts

Uber Geek
+1 received by user: 5460

Trusted
Lifetime subscriber

  Reply # 603726 2-Apr-2012 12:16
Send private message

What amp cables should I use? I see 200, 300, 500, 600, 750, and 1000amp cables, varying in price from $10 to $150.

2785 posts

Uber Geek
+1 received by user: 122


  Reply # 603902 2-Apr-2012 15:17
Send private message

networkn: What amp cables should I use? I see 200, 300, 500, 600, 750, and 1000amp cables, varying in price from $10 to $150.


What are you intending on starting? Unless you're starting a particularly large vehicle then 300 should be plenty. If you're starting the sort of thing that has a truck battery under the bonnet, then you may need as big as 500A.

I can't imagine you'd be likely to ever need >500A unless you were doing industrial callouts.
    

  




653 posts

Ultimate Geek
+1 received by user: 20

Trusted

  Reply # 603920 2-Apr-2012 15:34

IlDuce: Anyone used one of those little cube things which as I understand plug into cig lighter (and left for period of time like 5 - 10 minutes to transfer charge to car battery) to start flat cat?

I'm off to bed now so don't have time to research their name/brand. I wonder if they are lithium technology?


I bought one (a "Portajump"), never got it to work successfully and it ended up leaking all over my glovebox a few months prior to its "best before" date.



18920 posts

Uber Geek
+1 received by user: 5460

Trusted
Lifetime subscriber

  Reply # 603943 2-Apr-2012 16:02
Send private message

a 3L BMW and a 4.3L v8 Audi, and a Subaru Impezza 2l

n4

956 posts

Ultimate Geek
+1 received by user: 74


  Reply # 603972 2-Apr-2012 16:19
Send private message

networkn: I think you are misunderstanding what I am after. I am not just after jumper cables, I want a Electronic Starter kit.

http://www.trademe.co.nz/Browse/SearchResults.aspx?searchType=all&searchString=jump+starter&type=Search&generalSearch_keypresses=7&generalSearch_suggested=12


I have one similar. From memory it cost about $100 from Bunnings or something. We keep it at home, only charge it about once every six months to a year, and have never had a problem. Must be 3-4 years old at least. We don't carry it around, but have used it several times on our cars at home (usually due to internal lights running the battery flat). The one time I needed it at work, it turned out we had one here as well! (good investment for any office I would say). They are fairly heavy so would use petrol to lug around.




Huawei Mate 7, on 2degrees

2785 posts

Uber Geek
+1 received by user: 122


  Reply # 603975 2-Apr-2012 16:22
Send private message

It may depend how old they all are as to how efficient their starting systems are. You might want to find a service manual or see if an auto electrician can tell you, the Audi is likely to be drawing some pretty serious juice.

Man, you must be hating the cost of petrol these days ;)





2260 posts

Uber Geek

Trusted

  Reply # 603993 2-Apr-2012 16:36
Send private message

Yeah, 300A will be fine

It's not like you are jump starting a large 4wd, light truck, boat, or a large diesel engine.  The 300A will be fine for all cars, except maybe the older Rolls/Jags from the 70s/80s, some of them have stupidly large batteries


If the 500A amp ones are only a few dollars more, and look like they are better quality/have better shielding, get them instead




I have moved across the ditch.  Now residing in Melbourne as a VOIP/Video Technical Trainer/Engineer. 

21730 posts

Uber Geek
+1 received by user: 4514

Trusted
Subscriber

  Reply # 603999 2-Apr-2012 16:44
Send private message

They are rated based on the cranking amps of the battery in the car, so if you are recommended a 300 CCA battery then get the 300 leads etc - keep in mind in non cold countries that people often downrate the battery with no ill effect so look at what is supposed to be in there, not the $130 cheap peace of junk that is installed in the car.




Richard rich.ms

1 | 2 
View this topic in a long page with up to 500 replies per page Create new topic



Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.


Geekzone Live »

Our community of supporters help make Geekzone possible. Click the button below to join them.

Support Geezone on PressPatron



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.