I would think it would work but it would take a long time. I would hook up an inverter to the truck. Then you could plug in a charger.
I have a euHonda1000i you can borrow for your trip. I live in Tempe near ASU.I was just wondering if anyone has ever tried charging their trolling motor batteries with the car by hooking jumper cables to them. I have heard this is possible but not to sure. I am camping this weekend with no electric hook ups and don't wanna possibly have dead batteries out on the lake. It seems to me that the charge would be too fast or maybe the amps would be too much to where it would cause damage to the battery.
+1-- this could be done but would charge batteries to fast meaning to many amps. causing possible damage to batteries and would cause alternator to run hotter than normal causing possible alternator damage-remember the alternator in a vechile is designed to recharge battery after starting and run accessories when vechile is running, it is not designed to be an all out battery charger.I would think it would work but it would take a long time. I would hook up an inverter to the truck. Then you could plug in a charger.
+1, this is how you charge your battery on an R.V. running down the road."I would hook up an inverter to the truck. Then you could plug in a charger."
This would be a huge waste. If you understand electricity you know that every time you change electricity there are losses, and in this scenario there would be a lot of losses.
1. You would be changing DC to AC via the inverter.
2. Pluging the Battery charger into the inverter would be taking the AC output of the inverter and converting it to DC (via recification) just to charge the battery.
DC to AC = Loss
AC back to DC = Los
If you think it would take a long time going from your alt to a battery, the above process would be even worse.
Here is what I would do if I were you, I would buy a battery isolator. They sell them at car audio stores. I would run one terminal to the car battery, and then the other to a stationary post, then when and if you ever need to charge your battery you can just jump to the stationary post and charge from there.
No it will not ruin your alt. the rate at which the battery will get charged will be no greater than the output current of the alt. unless the battery is completely dead it will not act like that big of a load on your alt. and I guarantee it will not be a bigger load than say a high power amp, or a set of 100w halogens.