The voltage mentioned on the battery represents the maximum voltage across battery terminals. Hence for 12 V batteries, the maximum voltage across the battery terminal is 12 V and for the 24 V batteries, the maximum voltage across the battery terminal is 24V.
What are the features for 12V batteries?
This kind of batteries can be found in both 1 or 2 seater ride on cars for kids and can support up to 70lbs of carrying capacity, so 12V batteries are perfectly suitable for children between 2 to 8 years old who are beginning to experiment with driving with their ride on cars. Being less powerful than 24V, they can be more reliable for some parents without worrying about the speed and power the ride on car can reach.
What are the features for 24V batteries?
These beasty power units can easily move 2-seaters, with additional options of going off-road. One of the differences between 12V and 24V is that 24V batteries can support upt to 100 lbs weight capacity (or higher). Another good feature is that you won’t need to charge them nearly as often either.
Difference between 12V, 200Ah and 24V, 200Ah battery
The amount of power stored in a 24V, 200Ah battery will be 24V x 200 Ah = 4800 Watt-hour (4.8kWh). And the amount of power stored in a 12V, 200Ah battery will be 12V x 200Ah = 2400Watt-hour (2.4kWh).References:24v Lithium Ion Battery Manufacturer
This means that for a similar load 24V, 200Ah battery will give twice the backup time as compared to 12V, 200Ah. And for a similar backup time of 24V, a 200Ah battery can run twice the load as compared to 12V, and 200AH.
Refer to the below table to better understand the difference between the power store in 12V 200AH and 24V, 200 Ah batteries.
Let’s take two interesting case
If you connect two 12V, 200Ah batteries in series then the output voltage will be doubled while the Ampere-hour remains the same and you will get a 24V, 200Ah Battery bank made out of two numbers of 12V, 200Ah batteries.
Also, if you connect two 12V, 200Ah batteries in parallel then the output voltage will be remaining the same but the Ampere-hour will be doubled and you will get a 12V, 400Ah Battery bank made out of two numbers of 12V, 200Ah batteries.
How can I safely maximize the battery life?
Here are a few simple tips to help you safely maximize their battery life:
Fully charge your battery for at least 12 hours (or overnight) before the initial use.
When not using the ride-on car for an extended period of time, or putting it away for the season, fully charge it prior to storage.
Disconnect the battery before storage (after a full charge).
Do not let the battery compartment get wet (ie. avoid spills).
Do not place any metal objects over the battery to prevent shorting.
Comparing 12V vs 24V – Benefits of Each
When looking at 12V vs. 24V systems, there are some pros and cons to each system type. Let’s take a look at some of the pros of each.
12V System Benefits
As we talked about earlier in the article, 12V systems are relatively common. Most vehicles use 12V systems as components used in vehicles are designed to operate on 12V. The alternators generate 12V to charge the battery.
When it comes to RVs, most appliances such as RV refrigerators and all the lighting work on 12V as well. 12V systems only require one battery and work well for low-power applications and short wire runs.
12 volt systems are great for their simplicity and that most RV appliances work with them. Smaller solar systems are easy to hook up to them as well.
24V System Benefits
24V systems are beneficial because you can use smaller diameter wire and reduce amperage by two times. Using smaller diameter wire can reduce wiring costs and decrease the space needed to run wiring. This is especially important where long wire runs are required.
But wait, how can you run a smaller wire with more voltage?
You can actually run a wire 2x smaller than an equivalent 12V circuit. This is because the higher voltage requires less current to produce the same power. Since we are running less current or amps, we can use a smaller wire. This is the same reason power is transmitted on power lines at very high voltages. The wires can be much, much smaller and carry lots more power!
When building out larger portable solar systems using higher voltages like 24 volts or 48 volts is very beneficial. This is Geo Astro RV’s setup with thousands of watts of solar.In addition to smaller wires, 24 volt systems operate more efficiently in motors and inverters. Often, the same solar charge controller operating on 24V vs 12V will handle twice the solar input.
Comparing 12V Vs 24V Cons of Each
As there are pros of 12V vs 24V systems, there are also cons to each type of system. Some of the pros of one system can become a con of the other.
Downsides of 12V
12V systems require massive wires when pulling large loads because the current (amps) are higher. As we have already learned, 24V systems reduce the current or amps two times, then a downside of a 12V system is the amperage is double that of a 24V system at the same power.You can also view:12V 300Ah Lithium Battery
At 12 Volts very big cables are needed for high power appliances like inverters, in this case, 2 cables are used to properly handle the current. If this were a 24-volt system only those cables would be needed.
Because 12V batteries use two times the amperage at a given power draw, they are less efficient than a 24V battery due to resistive losses.
Downsides of 24V
If you are using a 24V system in an application with 12V appliances, you will need a converter to reduce the voltage to 12V. The variety of components and devices that run on 24V are not as plentiful as what is available in 12V.
This is a 24 volt system installed in an RV and this extra piece of equipment is needed. This is a 24V to 12V DC-DC converter. While this works very well to provide stable voltage, it is an extra cost and incurs a 4% energy loss.
Although you can charge a 12V battery with the alternator of a vehicle, you won’t be able to do that with a 24V system if the chassis is a 12V system. Additional DC-DC converters are needed to accomplish this task.