do you have to disconnect the positive battery cable or can you leave them attached?
1997266
If you are talking about starting the car, then yes you leave the cars battery cables attached to the car's battery. Word of warning: The one thing that will kill this unit is if you leave it attached to the car for more than a few seconds AFTER the engine starts. The alternator in the car will go to full charge which is more charging current than this unit can handle. One of the guys in my shop left one attached and went to the parts dept. It was physically destroyed when he got back. So start the car, and disconnect the unit.
1997267
Sometimes the PowerAll will stop working because of its protection/safety circuits. You certainly SHOULD disconnect it quickly after jump starting a car. Once disconnected, press the PowerAll's button and see if the blue charge lights come on (or test the flashlight). If they DON'T come on, plug it in (car or house) and the PowerAll will quickly run through startup self check and reset itself. Once the blue lights start animating, you can unplug and use it right away (just check the charge level). The trick is to CHECK it immediately after a jump start to see if you need to perform this reset. :) Sometimes the PowerAll will stop working because of its protection/safety circuits. You certainly SHOULD disconnect it quickly after jump starting a car. Once disconnected, press the PowerAll's button and see if the blue charge lights come on (or test the flashlight). If they DON'T come on, plug it in (car or house) and the PowerAll will quickly run through startup self check and reset itself. Once the blue lights start animating, you can unplug and use it right away (just check the charge level). The trick is to CHECK it immediately after a jump start to see if you need to perform this... » Read More Sometimes the PowerAll will stop working because of its protection/safety circuits. You certainly SHOULD disconnect it quickly after jump starting a car. Once disconnected, press the PowerAll's button and see if the blue charge lights come on (or test the flashlight). If they DON'T come on, plug it in (car or house) and the PowerAll will quickly run through startup self check and reset itself. Once the blue lights start animating, you can unplug and use it right away (just check the charge level). The trick is to CHECK it immediately after a jump start to see if you need to perform this reset. :) « Show Less
664332
There is a small piece of plastic across the power input terminals under the battery. This must be removed for operation.
1784846
Mine is connected all of the time to the two 12V batteries that are connected in series. It keeps the batteries desulfated and has even restored a battery that I had given up on..no worries in leaving it connected all of the time!
528085
Since you're disconnecting the air bag, you should disconnect the battery NEGATIVE terminal first. If you can replace a disc drive or a hard drive you've got it made. Two covers and screws (just above steering column) removes airbag then two screws each for buttons. The cable disconnects should be studied first, a small flat blade is needed on one side before pulling. The harness routing was tricky for my huge hands. Reassemble and cruise.
220838
There's no need to disconnect the jumper cable between the batteries. The Guest 2611A comes with four terminals; two per battery. Simply connect each battery to the charger and start charging.
1979199
It's generaly a good practice to disconnect the battery before any electrical work (unless required for testing)
1166437
I have left mine connected without being plugged in for a few hours without a problem. But I don't know about permanently I have never done that.
421587
You can leave them in without causing any damage since the charging current is stopped once he green light goes out. This is a handy feature for those of us that like to start eneloop pro cells charging on several of these chargers before going to bed. No need to babysit these eneloop batteries or chargers, when you see they're done feel free to take them out, but they can indeed be left in if you're not at home or sleeping when they finish charging.
350440
You can do both. I usually charge them, when not using them, in the off position. When I am using them for long periods of time and I notice they are starting to die I will plug them in. Either way is fine though.
1417771
Actually, with what these pull. You could leave it plugged in for years. Matter fact, your battery is more likely to drain of natural drain before this takes anything out of it. I own a battery terminal with a LED voltage display and I leave my race car untouched for a year or two and it doesn't drain it a bit. BTD048 Caliber Positive Battery Terminal Post with Digital Voltage Meter Display accepts (2) 8Ga Inputs, (1) 4Ga Input, (1) 0Ga Input
2066308
NO. The power supply is not interrupted. If your vehicle port charges when it is off, you should be fine. But also consider that leaving it for extended times can drain your battery.
1567075
You can leave the batteries on the charger to no detriment.I've left mine on for days, even. Do disconnect them if it stays in "charging" for entirely too long (I'd say over 24 hours) as that might blow your batteries up. I've never seen this though.
351248
The instructions do not indicate that that the keyboard switches off the current once the batteries are fully charged, so unplugging the cable to avoid overcharging and battery damage is advisable. All the LED's remain steadily illuminated indicating charging is completed, but current is still flowing to the batteries.
220973
You should disconnect them because it won't read it properly. If you have 1 bad battery it may read that one or read the good one... seperately would give a better charge.
1724285
No its better to leave it in so it will be ready to roll when unfolded. You never need to unplug the battery.
787696
I did not have to disconnect battery. worked fine. Be sure key is in off position.
88507
Yes,remove the batt.pack from the battery cable-disconnect the 2 spades (black and red wires)disconnect the electronics module by releasing tabs-leave valve body in place then momentarily connect the + terminal of the battery to the -terminal of the solenoid and the -terminal of the battery to the + terminal of the solenoid. Or you can remove the entire module and just connect the tubes.