We are a NGO in Guinea where there is no electricity. We are working with a generator to power our fridge. My question is if we can connect an energie station to the generator to charge it and then later on turn of the generator, use the station and by that save fuel.

The reason is due to something that occurs in the generator due to impedance and something called Middlebrook Criteria. The simple version is that the power supply in the fridge does not like it and wont accept it. The answer is a high quality power conditioner or a new generator. If you get a power conditioner make sure you tell the company you need a stable supply for a SMPS ( switch mode power supply) and check the return policy because it may not be enough to fix the issue and electrical parts are not returnable in some cases.

The most common cause of portable generators failing to produce electricity is from the loss of residual magnetism. Generators work by moving electrical conductors through a magnetic field. Your generator does not have magnets. ... When the residual magnetism is lost, the generator will produce no power at start-up.

There are a few methods of restoring a generator residual magnetism

12 Volt Generator Battery Method

Locate the voltage regulator for your generator.Unplug the two wires that connect to the generator brushes. Normally one is red and the other is black or white.Connect the black or white to the generator ground battery terminal.Plug in a light, turn on the generator breaker or switch and start the motor.Connect the battery +12 volts (red cable) to the red wire on the terminals you removed for three seconds.Remove your wires and replace the plug. The generator should now be producing power again.

Make sure you unplug the brush wires from the automatic voltage regulator or you will damage the regulator. Do not contact the voltage regulator or other wires as dangerous voltages may be present that can cause electric shock.

Is there any inline fuses that may have tripped. I had a similar problem many years ago and I needed to have the internal windings restrung / rebuilt. After this procedure my unit ran flawlessly and even above normal spec outputs

The most common cause of portable generators failing to produce electricity is from the loss of residual magnetism.

Generators work by moving electrical conductors through a magnetic field. Your generator does not have magnets. The magnetic field is created by taking some of the generator output voltage and converting it to DC and feeding it to a coil to make an electromagnet.

When there is a small amount of magnetism left over from the last time the generator was running, it is called residual magnetism. The little bit of magnetism is enough to produce a small amount of electricity. This small amount of electricity is needed to create an even stronger electric magnet. As the engine turns this magnet moving its electric field, through the stator windings, your generator produces even more power.

When the residual magnetism is lost, the generator will produce no power at start-up. This residual magnetism can be lost naturally from not being used or from the load on your generator being connected when the generator is shut off. It can also happen from running a generator with no load for too long.

Generators need to work and it helps maintain that residual magnetism. When they are running, a load should be connected to it. It helps create an even stronger magnetic field. Before you shut it off, turn off the switch or breaker to disconnect the load. If you shut off a generator with the load connected, it can essentially drain or demagnetize the electromagnet. Try and avoid running out of fuel.

How to fix it:

There are a few methods of restoring a generator residual magnetism

12 Volt Generator Battery Method

Locate the voltage regulator for your generator.
Unplug the two wires that connect to the generator brushes. Normally one is red and the other is black or white.
Connect the black or white to the generator ground battery terminal.
Plug in a light, turn on the generator breaker or switch and start the motor.
Connect the battery +12 volts (red cable) to the red wire on the terminals you removed for three seconds.
Remove your wires and replace the plug. The generator should now be producing power again.

The amount of Energy is determined by the Efficiency of the Fridge, the Generator Output and the Size of the Fridge. Then you have to take into consideration the amount of food inside because it is what keeps the food cold. An Empty Fridge has nothing to retain the coldness

It wont work. Electricity does not work like that. you can't double the power just by doubling the watts or amps. there is a lot and lots of other things involved.
I would rewire you camper so that half is run be one generator and the other half by the other generator... SO lights and fridge on one and plugs and heater on the other maybe...

Could be several problems on the gen set itself. Check to see if there is a surge protection breaker or fuse, depending on age. Make sure all connecting wires are secure and switches are not set to 240v instead of 120v if you are trying to use outlets.

Most fridges pull between 4 to 5 amps (600 watts) so a 1000 watt generator would cover all of them.

Could be that the generator cannot supply the surge power needed for the compressor to get going.

I have a 10KW stik welder/generator. I have no problem running a large freezer and 2 fridges except for the startup current draw. I have a $300 transfer switch connected to a 60amp sub panel with current meters on each leg. I have to watch the current draw and turn on & off breakers. I do have to play the "green acres" game because I have the water heater, well pump, and kit ckt all connected as well. Coffee machine, toaster, oil furnace, microwave all have to take turns as well as the water heater(4500WATTS). Cost was about$3500 in 2001 and $600 for a generator shed. lots of my labor. Last time we lost power it payed for itself. 28 hours without a generator would have been a trip to a hotel and lots of spoiled food to dump. hot shower and coffee anytime a big +