Home and Portable Generators come in handy when there is a severe power outage due to natural disasters, grid failure, or any other reason. Depending on your situation, you can create a permanent standby setup and hardwire the generator to your residential electrical system or use the generator as a true "portable" one by using the outlets of the generator with good quality extension cords. While powering small to medium electrical devices, appliances, and tools with the help of a generator is quite common, a strange thing that often many generator owners think about is how to charge battery with generator.
If you are in a situation where your RV battery, Car Battery, or other similar backup batteries are drained and you want to charge them using a generator, then you will have so many questions and doubts.
Don''t worry. This guide is just for you. Here, we will understand the basics of battery charging and also how to charge a battery with a generator. In the process, we will see answers to some important questions.
Batteries are an important part of our lives, be they large or small. Let us focus on the large batteries for this discussion. Where do we use large batteries? The first thing that comes to mind is our vehicles (cars, trucks, motorbikes, etc.).
Let us not discuss EVs (electric vehicles) and Hybrid Vehicles but only cars with good old internal combustion engines. The main purpose of batteries in cars is to start or crank the engine.
Although once the car engine starts and the alternator in the car recharges the battery it might not be sufficient to fully recharge it. This is okay if you take your car out regularly.
Another popular application of batteries is in RVs. Similar to cars (and other vehicles), even RVs have a regular Starter Battery to crank the engine (but with slightly different specifications).
In addition to this, there is another battery (or a set of multiple batteries) in RVs. The purpose of this secondary battery (or batteries) is to supply electric power to different parts of the RV or Motor Home so that we can use several devices and appliances (just as we use them in our homes). As a result, we sometimes call these batteries House Batteries.
These batteries cannot crank the engine. Other specifications and parameters of these batteries are also different from regular Starter Batteries of RV.
While they provide energy to different appliances in an RV, there is no normal way to automatically recharge them. You need to take the necessary steps to charge these batteries with proper charging systems, power supplies, etc.
Some RV owners design the RV''s electrical system in such a way that when they plug the RV into a 30A or 50A outlet in RV Parks, a special charger in the RV will recharge the house batteries.
Alternatively, some RV owners design the electrical system with a built-in generator. There is no need for making any connections or wiring as the generator is already a part of the electrical system. They simply have to start the generator and it recharges the batteries automatically. This way, you don''t have to rely on the grid.
What if you don''t have a built-in generator? How to Charge the Battery with a Portable Generator? Before answering these questions, let us take a quick look at the actual purpose of RV Batteries.
We already covered briefly about this topic in the previous section. But the purpose of a Starter Battery in RVs is to, well, Start the RV''s engine. Additionally, this battery also provides energy for lighting, ignition, radio, and other cabin requirements.
Speaking of electricity in RV, a quick reminder on different ways you can get an AC Mains supply inside an RV. There are three ways you can get 120V 60Hz AC Power inside the RV. They are:
This is where the other two systems come in handy. The first is the generator. You can build the electrical system of your RV with a built-in generator or use it with a portable generator.
Additionally, you can install several Deep Cycle Batteries in the RV, hook them up with a power inverter, and access 120V AC Power inside the RV, even when you are on the go.
The combination of batteries and generators can be even more exciting. You can run appliances off of the battery (in combination with the inverter) and use the generator only to recharge the batteries or supply energy when you parked the RV.
Irrespective of the source of power, their main purpose is to provide AC Main Supply at the outlets in the RV. This way, you can run different appliances such as refrigerators, coffee makers, electric stoves, TV, lighting, etc.
It is clear that batteries in RV are very important if you want a proper off-grid living experience. As you use the batteries to power different electrical and electronic appliances, they gradually discharge.
Even if you don''t use the batteries, there is a chance that they lose their charge. This can happen if you don''t take your RV for a long time. In this scenario, both the starter battery and the house battery will be completely discharged.
Weather, especially cold weather, is also a problem for batteries. If you live in a cold region, then the rate of discharge is significantly more than in other regions.
Irrespective of the reason, you have to properly take care of your RV Batteries to get maximum performance from them for a long time. The first step in this is to regularly recharge the batteries.
This is where portable generators come in handy. Can we directly recharge the batteries using a generator? No. you cannot simply connect the batteries to the generator and expect it to recharge. Please don''t do this. This is extremely dangerous.
Batteries are DC Electrical systems i.e.; they supply DC Power. In order to recharge them we need a proper DC Charging System. The output of the generator (usually) is AC.
Even though some generator models come with 12V DC Ports, these are not designed to recharge Batteries.
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