How long should the jump starter stay connected to the weak or dead battery ?
1783381
It is not supposed to be connected for more than 30 seconds. It does not recharge the battery, it starts the car.
1783382
Remove the jump start immediately after it starts. Definitely under 30 seconds.
1783383
Only 10 to 15 seconds until the car or truck with the weak battery starts. M power jump is a great product with power to start cars with dead batteries.
1783384
Just connect it to the battery then start it up. However, make sure the mpower jump it cables are making a good connection or it might not start. Once it starts remove the cables right away no longer then 30 seconds that is plenty of time. Because the car charging system puts out more current then it can take.
1783385
you can start the car immediately upon connecting - remove cable clips within 30 seconds - no problem!
1783386
Just look up the jump starter. Start the vehicle. And unhook the jump starter. The jump starter should not be hooked up more than 30 seconds after the vehicle is started.
1783387
Depends on what you are trying to start, but with 600 amps at your disposal, it will start most vehicles instantly
1976835
It takes about 4 hours. I let it go overnight, and it's pretty rare that I start with a completely dead battery
1071586
Depends, brand to brand and given age/ cycles of the battery but generally 3-4 minutesis a good rule. Any longer and you risk battery failure and will crash.
698134
No. It's meant for charging and maintenance and only has the options of 2,4 and 8 amps. There is no mention in the manual of using this for jump starting. I don't think the wiring could deliver that amount of current. I have a 40 year old charger starter that I use for jump starting and a portable Schumaker mity-mite as well for that purpose.
1129161
You can use this to jump start your vehicle and if the vehicle's battery is still good then letting your engine run for a while (usually 30 to 45 minutes) should charge the battery. If your battery won't hold a charge then its time to replace it. I don't think you will have good results trying to charge a battery directly off of this. This jump starter is basically just a battery itself that you can recharge by plugging into an outlet.
412124
The short answer is there's no way this battery would serve in an application for a car jump starter. It's designed to provide a very low current draw over many hours as a power failure backup. Any application for a car jump starter requires a massive current draw over a short time frame (seconds). I make no claim as an expert, but your application doesn't fit this battery.
1438760
I have doubts on this (or similar devices) being that reliable for jump-starting any car with a fully drained battery. The battery in this is about 20% the size/weight of most car batteries, so I don't expect but that much power out of them. Most manuals for these say things like "Don't try cranking the engine over 5 seconds or the battery will be damaged". The reason for that is because it's so small a battery and you're expecting so much power from it that cranking the engine seems like creating a short circuit (which could make the battery explode if kept in that state for over a minute). Although the sales people like to put the "400 amp" labels on these to make it seem big, I doubt you can really get 100 amps for cranking an engine. I've seen a fair number of reviews on units like this saying "It didn't work for me", so feel free to look at those (sometimes the negative reviews give more info than a "Works great" one where that's all they say). Also feel free to see my review of the Peak 1 450 jump starter (and that one has a 18 amp/hour battery, this one is only 5 amp/hour). I'm not trying to make you go after a brand (several brands sell virtually the same thing like Clore, Stanley, Black & Decker and more), but realize it's limitations since it's not a full size car battery.
1220454
Unplug it, let it drain conpletely. The recharge it. Make sure it is charging and charge it no less than 6 hours. I found the battery lasts a long time but needs about 30% to power up. Charging for 3 hours wasn't wasn't enough. If it doesn't work ten sed it back . It needs a good but of power to start
1689173
I don't know. I read the instructions and the porta jump wont help if the battery, starter or the generator is bad. it will only work if you left the lights on and the battery drained
2260278
I've never heard such a question. This is a battery charger, therefore you need a battery. A starter would trip the built in fuse as the draw would be greater than 100 amp.Please rephrase your question. IE: Will this unit charge a low battery to start a vehicle engine! The answer would be yes unless the battery is defective
86768
This battery pack could be used as the "source" for some "jump-start" devices that use the lighter outlet for connecting the cars together. However I'll add a few comments about using those lighter connected "jump-start" devices. First, several such devices like the Wagan Jumper item 9796 will draw more power than they deliver to "pump" the power, thus they waste some of the energy being transfered. Also they only work if you have a good battery in the car that accidentally got drained, so if the car battery won't hold enough of a charge to start the car, you'll never get going from the "trickle charge" they provide. Those also can take 15-30 minutes to give you enough charge to start, so don't be expecting to plug it in and 30 seconds later to be turning the key to start. Speaking of the key, you also need to have the key in the "accessories" position while charging the car so the lighter is connected to the battery in the car, but you're not draining power with the cars engine computer running like while in the "on" position. So with all of those issues, most don't like those lighter "jump-start" devices (look at the reviews of such), but that doesn't mean they don't work for some.
248248
As most have already mentioned jumping the battery is ideal, using the trick in the youtube video that a user posted here is the ideal option. However if you find this is happening chances are that cell is giving out. I had one cell that wouldn't jump probably because it's at the end of it's life. Most good cells will recover enough voltage, i never seen a healthy cell resting at 0 volts, maybe unless it was in storage for too long.
2005668
No, mine seems to hold a full charge forever. I actually didnt buy this to start a car. But today I went to start my pickup and the battery was dead. I hauled out the jump starter and was amazed at how well it spun over truck. I dont ever leave plugged in, once its charged I just leave on the bench where its warm.
2219059
With the unit unplugged you can push the test button to check the status of the battery. What did you use it for? We're you trying to start a car? It is best used for small vehicles (4 or 6 cyl) or cars were the battery is not completely dead. Have you used it before to jump a vehicle? Sometimes it is a matter of making proper contact. If you see some sparks when attaching the last cable, it should be good, if not make sure you are making proper contact. I left mine in the car for a couple of months after charging it overnight and it was still good. You might want to charge it overnight.
632958
Wei, the battery arrived charged, but I would still recommend throwing it on a charger for a bit- mine was at 11.8V, which is certainly enough to start most cars, but may cause issues with newer, more electronically controlled cars. Also, it will reduce the load on a starter which likely has been already strained starting on the previous, dying or dead battery- Mark W.
46697
I left my Neuron plugged in to recharge the battery overnight to see if it will power my mower again just to make sure and it started again after I press the start button. So I don't know why it did not start yesterday. I thought it had died. I am so confuse right now. My be the connection between the battery and the mower was loose. I will try to do some mowing just to make sure that it will run OK. Sorry for all the trouble.
2004736
Please forgive my ignorance Arthur. I purchased this to trickle charge my Optima Batteries. I am not sure if you can jump start, but you would need to have it plugged in. There is no battery in the unit. Very light.