Charging batteries with a small generator
I have been given a 1000w generator for free. If I am boondocking on 1 or 2 12v batteries how long should I run the generator? The trailer has n electric only fridge.
Forum Discussion
Matt_Colie wrote:
Swimmer,
You have a wonderful collection of inadequate information for your responses.
First problem: Lead Acid Flooded batteries can be charged to about 90% State of Charge (SOC) in a couple of hours depending on the battery temperature. That last 10% takes most of five hours and can't happen faster without the heat damaging the battery.
Second problem: That 1000w generator is about 60 amps at 13.5V (for a 12V system). Your electric refrigeration is probably about 120W (about 10 amps) on a duty cycle that is related to temperature and use. So, it will suffice and larger generator won't get you any advantage.
Third problem: Will you be able to run the generator all the time you need where you are going? Many places have quiet hours.
My guess based on my experience is that if you run the generator at least 12 hours a day, you should be able to survive.
You gave us no clue what the reefer is or what your house bank is, and it does not make a huge difference.
If you know more, come back and we can probably get you a better answer.
I plan on using it when hunting on crown land. So, if need be, it can be run nonstop.My plan is to fire it up when we get up, and leave it running till we get back from hunting.
