Can I leave this all wired up and "ON" when I start my engine and the alternator starts charging the same battery?
1874259
This is a question to ask of the manufacturer. I would think their is protection in the charge controller to prevent any damage, but I have no knowledge of that.
1001717
This unit does not have that circuitry as far as I know. The unit only allows charging to both batteries with the engine running. If your cranking battery is below the minimum charge to crank, you're S.O.L. If you install a switch to redirect the current of your aux batt to your starter then you are golden.
2252474
Can't answer as I sent unit back right away as soon as I read don't use if engine is on - and that's the only way my power outlet have power.
1549442
They do consume more power but your alternator keeps your battery at the highest charge possible. Maybe your Battery's old and the charge from the alternator wasn't enough to keep it charged? Get your battery tested
964461
Yes, I use mine for that on occasion. Be careful when the car is running, the alternator could pop the fuse or drain the 9V battery in the multimeter rather fast. There's not a whole lot you can learn about the battery with a multimeter, but they are quite useful for testing devices in cars/trucks. e.g. you can test your coil packs using the Ohm-Meter (resistance) functionality.
704650
Yes, you can leave it connected all of the time. It'll automatically stop charging when the battery is full. But why would you want to? The charger is always converting 110v AC house current to 12v DC battery charging current. That produces heat and wastes electricity (aka $$$). I unplug mine when the light goes green meaning the battery is charged.
996746
Yes I believe it will although it would be good to keep your engine running while using it-some people think it charges up and you don't have to keep it in tact with the engine current-but we have found it works best when still charging. Don't really know otherwise, if assuming it will work otherwise.
704132
It usually starts with one or two pulls of the starter cord so it's really not an issue. It will re-charge itself when running. If it's an issue any trickle charger will do but is really unnecessary.
780565
The alternator has an internal voltage regulator that controls the charging process according to the needs of your battery and your bike's electrical system. It will not overcharge the battery.
2059782
I did not put it on a "charger" because i dont trust the one i have. I just let it sit and build a charge overnight then tightened it up and let the alternator charge on my commute. Not the right way to do it but it worked and registered correctly on the multimete .
312063
This is not one of those that plug into the cigarette lighter. This should be wired directly to the battery. For best results, use heavy cables like on a good set of jumper cables, but shorter (up to 3 feet). Such cables are available separately. As for running the engine, I think that is best. Otherwise, your battery will be used up soon.
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.
440915
It should work with any 12v starter battery and alternator to charge accessory batteries when the main engine and alternator are running.
1958754
Yes, that's what this design. When generator starts should not be connected all the charging at the same time. Why generator may be damaged.
1528836
Yes, if you use it with your car turned off. As long as the engine's running your battery won't be drained.
1536770
That would be my big problem. If your car doesn't turn off that plug when the car is off it will stay on and run your battery down. So I've had to have my car jumped a few times when I forgot to turn it off. And that's bad for your battery.
1630717
When switched to on and you start your boat your alternator will charge that starting battery. After three minutes the batteries will be combined by the ACR and your alternator will charge both batteries. When you shut off your engine the ACR will isolate your starting battery so it can not be discharged. So listen to that favorite song track for hours till the battery is dead if it's that good. There will not be any issues with 11 volts it treats both batteries the same as far as voltage charging is concerned. Start your boat and your good to go. I would suggest both batteries be in good condition. This product is an install and for get. Best money you will ever spend. When switched to on and you start your boat your alternator will charge that starting battery. After three minutes the batteries will be combined by the ACR and your alternator will charge both batteries. When you shut off your engine the ACR will isolate your starting battery so it can not be discharged. So listen to that favorite song track for hours till the battery is dead if it's that good. There will not be any issues with 11 volts it treats both batteries the same as far as voltage charging is concerned. Start your boat and your good to go. I would suggest both batteries be in good... » Read More When switched to on and you start your boat your alternator will charge that starting battery. After three minutes the batteries will be combined by the ACR and your alternator will charge both batteries. When you shut off your engine the ACR will isolate your starting battery so it can not be discharged. So listen to that favorite song track for hours till the battery is dead if it's that good. There will not be any issues with 11 volts it treats both batteries the same as far as voltage charging is concerned. Start your boat and your good to go. I would suggest both batteries be in good condition. This product is an install and for get. Best money you will ever spend. « Show Less