RC batteries & rechargeable batteries

RC batteries & rechargeable batteries – Power for your RC models

Many models are designed purely for ornamental purposes. RC models, on the other hand, can be controlled remotely, and are often capable of reaching high speeds. As the power supply for the motor, RC batteries & rechargeable batteries are an indispensable part of any RC model.

What are RC batteries & rechargeable batteries?

RC batteries & rechargeable batteries are designed especially for RC models. They are available in different types, and are tailored to the needs of different models including RC cars as well as remote-controlled motorbikes, trucks, buggies, helicopters and tanks. In addition to the shape and weight of the vehicle, a lightweight battery is also a key factor in performance. 

What are the different types of RC batteries?

There are four main types of RC batteries:

LiPo batteries

"LiPo battery" standards for "lithium polymer battery". This is a special type of lithium-ion battery – the use of a polymer electrolyte enables LiPo batteries to be produced in a wide variety of sizes and shapes.

NiMH batteries

NiMH batteries (nickel-metal hydride batteries) are comparatively inexpensive and have a particularly high energy density. They are very robust, but also weigh more than other types of batteries.

Li-ion batteries

Li-ion batteries (lithium-ion batteries) are considered very safe, but have now been replaced by LiPo batteries in many applications.

Non-rechargeable batteries

Some batteries cannot be recharged and are designed for one-time use. However, compared with rechargeable batteries, these batteries tend to hold their charge for longer and cost less. For RC vehicles, disposable batteries are typically used in remote control systems.

What are the differences between the various types of rechargeable batteries?

Different batteries have different specifications. For this reason, it’s important to look at the different options before deciding on which type of battery to choose. In a nutshell, you should pay attention to the following points (in addition to shape and price):

Power

For many model fans, battery performance is a top priority. LiPo batteries have the edge in terms of performance, and can deliver significantly more power than NiMH and conventional batteries. For example, the nominal voltage of a classic LiPo battery is 3.7 volts per cell. A NiMH battery, on the other hand, is only capable of 1.2 volts per cell.

Weight

The weight of the battery plays a decisive role in a vehicle’s maximum speed and acceleration capabilities. Fans of racing vehicles should be aware that LiPo and Li-ion batteries are usually lighter than NiMH batteries.

Durability and safety

In terms of durability and safety, NiMH batteries are the best choice. These RC batteries & rechargeable batteries are generally very forgiving – in addition to being particularly robust and almost indestructible, they also pose only a negligible safety risk. LiPo batteries, on the other hand, are significantly more sensitive, and safety precautions are essential.

Which RC battery should I choose for my RC model?

The type of RC battery you should choose depends on several factors:

• Model and model type
• The scenarios in which you plan to use your model
• Budget

In general, NiMH rechargeable batteries are very rarely used as drive batteries nowadays. Instead, they are mainly used to power the transmitter and receiver for the remote control system. For the drive battery, most modelling fans opt for LiPo batteries, provided that the speed controller features suitable deep discharge protection.

What should I pay attention to when using RC batteries?

To get the maximum lifespan out of rechargeable batteries and to ensure safe use, you should observe the following precautions:

• Only charge and use RC batteries when they are completely intact.
• Only handle damaged batteries with sealed protective gloves.
• Never disassemble or attempt to modify batteries.
• When connecting an RC battery, pay attention to the correct polarity.
• Protect lithium batteries from deep discharge.
• Observe the maximum permissible limit for the battery current.
• Allow batteries to cool down before charging.
• Monitor the charging process.
• Disconnect the rechargeable battery from the charger when charging is complete.
• Store RC batteries in a dry and frost-protected location.
• Store lithium batteries in fireproof safety bags.
• Do not allow children to handle RC batteries.

Charging RC batteries & rechargeable batteries correctly – key points to consider

The charging process is very important – its impact on the lifespan and functionality of the battery should not be underestimated. Each battery must be charged according to the corresponding charging specifications using high-quality, compatible charging cables or correctly configured multifunctional chargers. Lithium batteries are highly flammable – in a worst-case scenario, they can even burst into flames if overcharged. As a result, these batteries should be charged with a balancer connection, and the charging process must be supervised. If you need to store an RC NiMH, Li-ion or LiPo battery for an extended period of several weeks, it should have between 50% and 70% battery charge. By following these tips for charging RC batteries, you can help to keep your RC battery in optimal condition for as long as possible. 

What should I consider when buying an RC battery?

If you need to purchase an RC battery, you should take plenty of time to consider the various options. Avoid making rushed decisions, as you may end up buying the wrong product. Instead, take a close look at the various choices, make comparisons if necessary and consider the following points:

Compatibility

The most important factor when choosing RC batteries & rechargeable batteries is compatibility. In other words, the battery must fit your RC model. For example, if your model does not have deep discharge protection, a LiPo battery would be a poor choice.

Capacity

It’s also important to look at the capacity – the so-called C rating – especially for lithium batteries. This represents the maximum discharge current that the battery can supply.

Manufacturer and quality

There can often be large variations in the quality of RC batteries. Unfortunately, low-priced unbranded products can quickly turn out to be useless. If you’re looking for a battery that is both powerful and durable, you should opt for high-quality products from reputable manufacturers.

RC batteries: choose wisely, charge correctly, and use safely

Ultimately, there are three points to consider if you want to get the most out of your RC batteries: choosing the right model, charging correctly, and paying attention to safety during use.