Based on reviews.

Hudy Customized bags now available for pre-orders!

We're using cookies to serve you better - Read more
Shipping to over 180 countries
Online since 2010
100% Satisfaction Guaranteed

Basic Lipo-Battery Knowledge

While some RTR cars are still delivered with NiMh (nickel metal hydride) batteries, and they can still be a good choice for beginners or specific uses, by and large, Lipo (lithium polymer) batteries have taken over the RC car market. Many RTR’s are either already delivered with them included, or the battery choice is left up to the customer, and in all RC car racing today Lipo batteries are used.

LiPo batteries come in a huge variety of type and size. But what do all the markings on a Lipo battery mean, and how do you know which is the right choice for you? Let’s take a look at some basic Lipo battery knowledge.

A Lipo battery is constructed from separate cells, all connected to form the specific battery. One Lipo cell  has a nominal voltage of 3.7V. When connecting these in series, the voltage increases, meaning you get 7.4V for a 2 cell battery, 11.1V for a 3 cell battery, 14.8V for a 4 cell battery etc. Capacity on the other hand can be increased by connecting more cells in parallel.

On batteries, or in product descriptions for batteries, you see numbers or codes like 2S2P. These numbers are a way to describe the battery configuration in a short way, and in the example they mean that the battery has 2 cells (2S) connected in series, and 2 cells sets connected in parallel (2P).

Higher voltage means more power, higher capacity give longer runtimes.

Here’s a table with the voltage for the Lipo types used for RC cars:

  • 1S battery: 1 x 3.7V = 3.7V
  • 2S battery: 2 x 3.7V = 7.4V
  • 3S battery: 3 x 3.7V = 11.1V
  • 4S battery: 4 x 3.7V = 14.8V
  • 5S battery: 5 x 3.7V = 18.5V
  • 6S battery: 5 x 3.7V = 22.2V
  • 8S battery: 5 x 3.7V = 29.6V

In addition to "normal" Lipo batteries, there are also special LiHV, or High Voltage Lithium Polymer batteries available. These are very similar to normal Lipo batteries, but they allow you to charge the battery up to 4.35V per cell, while regular lipos must be charged up to 4.2V maximum.

    Another important aspect of any Lipo battery is the C rating, which you will always again find on the battery label or product description. The C rating stands for discharge rate, and describes how fast a battery can be discharged safely. If a battery is rated at 50C and has a capacity of 5000mAh, it means that safely handle a discharge rate of 50 x 5000mAh = 250.000mAh = 250Ah. Meaning that this number is the maximum sustained load you can safely put on the battery. As you can see from the example, both the capacity and C rating are important for the actual discharge rate of a battery.

    Many batteries today have two C ratings - a continuous rating, and a burst rating. The burst rating describes what the battery can handle in short bursts, and not continuously. Batteries are usually compared using the continuous rating and not the burst rating. The C rating can be useful to help you select a Lipo battery, but unfortunately many manufacturers overstate C values for marketing purposes, which means you can’t always trust it 100%.

    Another very important aspect of a Lipo battery is IR, meaning Internal Resistance. As opposed to the other features we have mentioned, you will not find the IR rating stated anywhere on the battery. The internal resistance of a battery pack changes over time, and depending on conditions like temperature, so it would be impossible to give a correct number. That does not mean it isn't important though, as in some ways, the internal resistance is among the most important ratings for any battery.

    To make it simple, we can describe IR as a measure of the difficulty a battery has delivering its energy to your motor and speed control. So the higher the IR number, the harder it is for the energy to reach them. In short, the internal resistance is a measure of how efficient the battery is.

    Choosing a Lipo battery

    • Size and connectors

    This is the first thing to take into account, as you need to choose a battery with a physical size that actually fits in the car. You also need a battery with the right connectors for your car/charger. Of course connectors can be exchanged, but the easy solution is to buy a pack with the right connectors.

    • Voltage

    Battery voltage, or cell count, is another decision that you will need to make. Many cars and their electronics are made for a specific voltage, like a max 2S (7.4V) battery, but for some cars it’s up to you to choose among several alternatives. Higher voltage batteries makes more power, but are heavier and often more expensive. The most important thing is of course not to go over the voltage that your electronics are able to support. And there is no idea to go for a super expensive battery that makes your car so powerful that it is un-driveable.

    • Capacity

    What capacity you need is directly related to the size and weight of a car, as well as the motor used. With a light and small car, you will get enough runtime even with a low capacity battery pack. The more energy the car and electronics draw, the more capacity you will need to get decent runtime. A higher capacity battery will usually also cost more, so the choice comes down to a compromise between price and runtime.

    • Discharge Rate

    Using a battery with a discharge rate (C) that is too low can result in your battery being damaged. However, today most batteries sold have a high enough discharge rate for most uses. Remember that the maximum current output of a battery depends on the capacity and C rating. Therefore, the smaller the capacity of a battery, the higher the C rating needs to be.

    • Hardcase

    While most batteries for RC cars have a hard case, there are also soft case Lipo batteries available. For RC car use hardcase batteries is what we always recommend.

    About us

    RC Information

    RC Information

    Order our weekly newsletter

    Your shopping cart is empty

    Terms and conditions


    All products listed as “in stock” are in our warehouse and ready to be shipped within the next day. Exceptions to this are pre-orders and possible, but unlikely, errors in stock numbers. All products include the  VAT according to the destination country.  Prices are subject to change without prior notice.

    Customer service speed

    We are answering emails everyday from the morning to the late evening, no matter if its Sunday or Christmas eve. We work in the EET time zone which is +2h from GMT. During the day our customer service is usually really fast and in the evening we are little slower due we have less people to answer questions. Easier things are usually handled within the hour and shipping related things we try to handle during the day so they can be shipped out the same day. Our goal is to answer all emails within 24h no matter how difficult the question is. The fastest way to get customer service is always to send us a email. Please include relevant pictures and a structured email with proper sentences so we can answer you faster. Take your time and read trough your email once before you send it to us.

    Payment Methods and Shipment Information

    We ship globally for example to Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden and United Kingdom, Norway, Turkey, Switzerland). And many other countries, just go to the checkout and see if you can checkout. If not just let us know and we will quote you a price as we are able to ship to any country in the world.

    We accept Paypal, credit card payments, Apple Pay and IBAN/BIC (SEPA) bank transfers.

    Payment service

    Our credit card and web bank services are delivered by Finnish Paytrail Oyj.

    Paytrail Oyj, Business-id: 2122839-7

    Innova 2
    Lutakonaukio 7
    40100 Jyväskylä

    We also have numerous local payment options available through our international payment service


    Kraanspoor 39
    1033 SC Amsterdam
    Postbus 37159
    1030 AD Amsterdam
    The Netherlands

    P: +31 (0)20 8500 500
    E: [email protected]


    All payments are made in Euros. You can however browse the shop in other currency but the price then is not final. You will see the final Euro price in your shopping basket when paying for the product. The price is shown in “5. Send Order” part of the checkout form.


    Our shop automaticaly includes or excludes VAT percentage from the prices by the destination country. You can change the destination country from the checkout pages before you order.  All our customers will pay the same price no matter the included VAT percentage. Companies who are buying with VAT numbers can buy products with exluded VAT according to destination country. 

    Shipping options

    You can browse all our shipping options with out registering. Just add the products you are interested in and proceed to checkout page where you can see all the shipping options and estimated delivery times.

    Basic tracked shipping starts from 6,90€ (GLS road freight) in European Union countries.

    Estimate Shipping times with GLS.

    An international GLS parcel is delivered to neighbouring states of Finland like Sweden or the Baltic countries in a standard delivery time of 24 to 72 hours. To more distant European countries the international parcel dispatch takes between three and six working days, to remote areas up to eight days. Rough estimate is 1 week from order to delivery.

    Please note that GLS shipping time is calculated in working days (Monday to Friday) and excluding the day when parcel is shipped.
    Here you can find estimated delivery times.
    Note! Here you can find collected statistics about average delivery times.

    Estimated shipping times by DHL and UPS

    DHL Express and UPS Express are our fastest delivery options. Both options can reach almost anyplace in EU in 1 day, but some places take 2 days.
    • Depending what kind of products you want to order the shop will let you choose from available shipping options.
    • Both Options are also Door To Door Services. The Courier will deliver the parcel to your door. But they also have pickup points where they might drop your package off so you can pick it up when it suits you.

    UPS Standard is a slower and cheaper option from UPS for most European countries. Delivery time varies from 2 to 7 working days depending on the location. 

    When you are checking out your order you can see a more precise estimate of each shipping option to your country.

    Refund policy

    We accept returns of new, unused merchandise within 14 days from the delivery. Please contact us at [email protected] to receive return information. The customer is responsible for any return costs unless otherwise agreed to with our customer service. We try to return the money with the same payment method that was used to pay for the order, if its not possible we make a wiretransfer. You can also request a gift card if you are making a new order to speed up the process.

    We also accept returns after 14 days upto 50days, but we refund them with a giftcard to our shop so you can replace them with any products we sell. Please contact our customer service for details.

    After we receive the merchandise and verify its re-sellable condition, we will refund the money or give you a giftcard. Depending on the item this will take 1-3 days after we have received the item. If there is a delay we will contact you.

    Please note that all parcels that are returned to us because customer has not picked it up / accepted it or paid customs fees of it will processed. Handling and shipping costs will be reduced from the refunds.

    Note! Every return made without notice via email will be charged with handling fee of 20€. Handling fee will be reduced from the total refund.

    Damaged Shipment

    In the rare occurrence that the shipment has been damaged, please take pictures and send those to our customer service [email protected] immediately and we will make sure we get you sorted and back to enjoying our hobby. Also notify the courier bringing you the shipment that it has been damaged.

    Defective parts and Warranty Issues

    If you feel that your product is defective please send us a email and we will let you know what to do next. Most items do not have a warranty as they will break in normal usage. For example if you hit something solid or take a larger tumble. Properly used items should easily last 3-12 months and during this period we are able to replace broken items if they have a manufacturing or material fault. We have years of experience with different makes and they all have different warranty policies. We have chosen to work with brands that have a good understanding how to serve their customers and you can be assured that you will get the best customer experience possible with us.

    We do not replace or exchange products that are not defective or broken by improper use or have not been maintained. But we do help and teach you how to do things properly so you do not break anything in the future, just email us and we will help you out. We are however unable to wrench for you, its part of the hobby so its important that you will learn that part also your self, we have great tools to sell you so just ask us what you need.
    Note! Many manufacturers are strickt that electronics are not allowed  to be modified (connectors changed etc.) without disabling the warranty. Remember to check this from your products manual.

    Don’t worry you are safe with us! Most of our customers feel that they get excellent service in the rare occurrence that they encounter a problem with the product they have bought.

    And remember if you run in to a problem or you feel that there is a problem with arrived products do not hesitate to contact us. We are here to help and we do our best to sort it out as soon as possible.

    What happens if EuroRC made a error in the shipment?

    We ship a lot of orders each day and rarely there are errors. We do however try to minimize the effect on the customer. Please contact us immediately if we have made an error and we will make it right.

    Address for returns

    Always contact us before returning any product, we can not take responsibility for shipments that are sent without prior notice. Its very important that we can tell you how to mark the parcel so it will be processed in a timely fashion.

    EuroRC Oy
    Päiviöntie 8
    12400 Tervakoski

    [email protected]



    My account

    Customer service

    More info