I just received this unit but can not charge it. There is just a clicking noise when the charger is plugged in. Is the AC switch suppose to be on? If I turn the AC switch to on, it looks like it is charging. However, no where in the manual does it say to do this. So, if AC switch is not on, all its doing is a clicking noise and the charging indicator blinks red/green constantly. However, with the AC switch on, it seems to charger. I just received this unit but can not charge it. There is just a clicking noise when the charger is plugged in. Is the AC switch suppose to be on? If I turn the AC switch to on, it looks like it is... » Read More I just received this unit but can not charge it. There is just a clicking noise when the charger is plugged in. Is the AC switch suppose to be on? If I turn the AC switch to on, it looks like it is charging. However, no where in the manual does it say to do this. So, if AC switch is not on, all its doing is a clicking noise and the charging indicator blinks red/green constantly. However, with the AC switch on, it seems to charger. « Show Less
1791373
I have two of these devices, one for each of my cars. I have never had this problem on either one. I would probably suggest to check if the jumpstart switch or the air compressor switch are turned on. If any of the output switches are on while you're trying to charge it may produce an effect like this.
1791374
I forgot where I bought this from but now I know. This thing only lasted one year and doesn't keep the charge for too long. It also wouldn't start my truck. Only good for small cars or lawn mowers. The charging; you just plug it in. There's 3 or 4 lights indicating the status of the unit. When you see all green lights in its done. You then have to turn the switch to on in order to use it. Lesson learned. Don't buy a cheap jump box. The Amos are too little. It's really a motorcycle battery inside, a small battery can't provide the necessary Amps to turn over a V10.
1791375
I started having the same problem with mine. I think the unit needs to be returned.
1591260
I've had this happen occasionally with mine, particularly as the battery has gotten older. It seems to happen only after it has been plugged in for a long time. Unplugging it and letting it sit seems to clear it. If I don't leave it plugged into the charger for more than a day, I don't see the problem. If your's always does it, I think the battery may be getting sick, or the charging circuit is defective.
1039350
I have never experienced what you are, just a guess, I would ck out your charger and cable. It sounds like the charger is not working.
1060328
The first time I plugged in one of these it instantly was blinking the "FL" which is supposed to mean that it's "full". However, I unplugged the AC charger and checked it again where it went to under 10% (showing that the battery was far from charged and the "FL" was a false reading coming just from the charger power while the battery was resisting taking any power). So leave it plugged in for 12+ hours and you'll likely see it go down to 60% after a few hours, then slowly come back up and eventually reach "FL" again. Then it will be charged (and if you pull the plug on the charger and check it, it should still read 99%). The first time I plugged in one of these it instantly was blinking the "FL" which is supposed to mean that it's "full". However, I unplugged the AC charger and checked it again where it went to under 10% (showing that the battery was far from charged and the "FL" was a false reading coming just from the charger power while the battery was resisting taking any power). So leave it plugged in for 12+ hours and you'll likely see it go down to 60% after a few hours, then slowly come back up and eventually reach "FL" again. Then it will be charged (and if... » Read More The first time I plugged in one of these it instantly was blinking the "FL" which is supposed to mean that it's "full". However, I unplugged the AC charger and checked it again where it went to under 10% (showing that the battery was far from charged and the "FL" was a false reading coming just from the charger power while the battery was resisting taking any power). So leave it plugged in for 12+ hours and you'll likely see it go down to 60% after a few hours, then slowly come back up and eventually reach "FL" again. Then it will be charged (and if you pull the plug on the charger and check it, it should still read 99%). « Show Less
1701040
Fortunately I have not had this problem. I would suggest attaching it to the charger one more time to see if you can get it to charge. Otherwise I would return it for an exchange. I bought an extra battery and have had no problems with the charging of either one.
663437
It looks like you have a problem with the assembly of the unit. I went out and bought a jack to plug it into the wall. So I don't have to charge it. You can buy them at Best buy they are about $15.00. I have not had any issues with mine. I use it all the time. You may want to send it back if it is broken.
1232444
Are you sure it is turned OFF when you charge it. If the switch is on it won't charge. Took me forever to figure this out...
1128691
Mine has a red light that comes on and stays on while charging. I will update when it's done charging to let you know what it does. OK, after charging the red light went off. At that point I disconnected from the charger and reconnected it, the light came on for a second and went right back off so it looks like you're fully charged. Hope this helps and enjoy!!
1599227
My husband has had that issue before, keeps jiggling it and moving it until the light comes on. I don't know if it is charging without the light being on or not - but he does not trust that it is charging unless the light is on. Must be a weak connection to the charging light, but keep trying to get it to come on.
1496502
I have not used the one I have in some time as the connection used to charge it broke on the 4th use. Having said that, I believe that when you plug it in there is a red light showing it is charging; when it's done it turns green. Good luck!
2133949
About 2 months ago I purchased 18 of these units. When charging them all, I initially found that only 4 of the 18 green lights on the chargers came on and the rest remained off. However, I verified that although the green light was not on, the battery was still being charged as expected (the charger was working fine, but the Green LED just wasn't working). As time went on more green lights would come on, somewhat sporadically it seemed - but all the chargers were still charging. It's certainly inconvenient. As a result, I measure the voltage on each battery after charging to verify that it reached capacity. About 2 months ago I purchased 18 of these units. When charging them all, I initially found that only 4 of the 18 green lights on the chargers came on and the rest remained off. However, I verified that although the green light was not on, the battery was still being charged as expected (the charger was working fine, but the Green LED just wasn't working). As time went on more green lights would come on, somewhat sporadically it seemed - but all the chargers were still charging. It's certainly inconvenient. As a result, I measure the voltage on each battery after charging to verify that it... » Read More About 2 months ago I purchased 18 of these units. When charging them all, I initially found that only 4 of the 18 green lights on the chargers came on and the rest remained off. However, I verified that although the green light was not on, the battery was still being charged as expected (the charger was working fine, but the Green LED just wasn't working). As time went on more green lights would come on, somewhat sporadically it seemed - but all the chargers were still charging. It's certainly inconvenient. As a result, I measure the voltage on each battery after charging to verify that it reached capacity. « Show Less
897168
The charger shouldn't be making any noise, nor any vibration or buzzing when plugged in. If it is, it may work fine and last a while, or it could fail at any time. Try another outlet just for kicks, but you will likely want to replace the charger to be safe. Mine's been silent and problem free since day one.
295770
Not sure why it's not charging? Mine works fine for over a year now. I'd check your charger first. Make sure all connections are correct & tight. Then, if still no luck, purchase a new charger-the least expensive fix. Make sure the 4(four) metal prongs on the right side of the pass-through box are straight & in-tact. Good Luck!
1843627
usually when you charge it , it should have a blue / red light that pops up. if it doesnt, it can be broken or you didn't charge the charger yet (:
1182053
I purchased the same unit and I had the same difficulty. Connecting the unit to the power source, the indicator light shows power coming in. Might be an internal contact problem or a mechanical design problem, because anything connected to it was not charging. I had to press constantly the plug of the chargeable unit into the charger openings, but after a short time the contact got interrupted and I had to press again and again. Bottom line: not a good unit, I would not recommend it to anybody to purchase.
344816
The charger should blink when plugged in. We use our phone cord and plug to charge it. If it charges you turn it on by the button on front it should turn green. Personally have never had a problem with any of the ones we bought.
770842
I have the exact same problem - Have been searching for a while - but no luck with a solution. I also tried to get a new charger for the car and was told they are not available. When I first began to use the unit, the battery worked fine, then I stored it for quite some time and thought that was the issue. But after having it plugged in constantly, all that happens is the charging light will blink periodically, but the unit WILL NOT function without the power cord regardless of how long it's been charged :(
636327
You are not seating it in the charge properly and the unit has to be turned off when put in the charge. It will start off red and turn green when charged.