electric bike batteries explained

All modern day electric bike batteries that are Lithium-Ion (Li-ion) and made in the past few years will have all of these properties. Think about going full throttle on a long road until the bike dies. Warranty This is less clear cut that many people think but in general a higher voltage battery will perform better. Electric bikes in the UK tend to come with either Lithium Ion (Li-Ion) or Lithium Polymer (LiPo) batteries. A 10ah battery delivering 500w continuous will run for half the time of a 20ah battery pack. I have found that the key to an ideal setup is to have the lightest and smallest possible battery pack that will get the job done. Most people, myself included, rarely go more than 20 miles at a time without stopping ( 32 km ), usually much less. These days, most electric scooters still use SLA batteries, while electric bikes (which often require human input) have opted for newer battery technologies to keep the bike as lightweight as possible. It’s always going to be worth spending a little bit more on a better battery or bike/battery combo. Cook battery and bike sellers will note what brand cells they use on the battery, ask if they don’t. It stands between the actual battery and the power wires, monitors all the voltages of cells within and also typically watches how many Amps are flowing. Be the first to get new e-bike deals and guides! This is where shape and weight come into play!Battery packs in aluminum cases and mounting brackets make the task of mounting to your ebike much easier while also protecting the pack from impacts, but it adds cost, weight and bulk. Gaston is an admin and key contributor at the popular Endless Sphere Technology Forum. If you use a electric mountain bike you may need extra batteries or a more portable charger for quick charges in between runs. Chargers are around 3-5 Amps but charging at the highest/fastest setting all the tie isn’t recommended. Or, double the amps for half the time.. Or half the amps for two hours.. etc.Watt Hours: This is a far more accurate way to know how much usable energy is in a given battery pack ( abbreviated Wh ) when available, this is the number to look for! Some high end e-bikes built for cities, or electric mountain bikes, have the battery built in to the down tube. .. say what ? So if the max peak might be used for the initial acceleration to top speed and the continuous peak keeps you at that top speed.. Using the assist at the lowest setting you are comfortable with will make the battery last much longer too. (36 volts times 10 amp hours equals 360 watt hours). You will likely not find all the ideal factors in a pack but some are vital, while others are not as much.The most common mistake that many ebikers make is to want a HUGE battery, this is all fine and great until you have to figure out how to mount it on your ebike, and then it gets worse when you need to carry it up a flight of stairs or put it on a bike rack!Be realistic and you can save yourself a lot of headaches and money, also end up with the best ride possible for your needs!After building 100's of bikes for people short and tall, big and small.. So an 800W battery would power a 400W motor continuously for 2 hours. There are a lot of different calculations you can do to figure out how much power you’ll use, how efficient the bike and motor are, how cold will affect the battery e.t.c. This means that the battery should be able to draw power at this rating non-stop until the battery is drained. Electric Bike Batteries and Range Explained Jan 18, 2021 | Electric Mountain Bikes QuietKat eBikes are built with high quality lithium-ion batteries which are designed and built for extended use in rugged conditions. The important things for you to look for depend on if you are buying a new e-bike, converting a normal bike to an e-bike with a kit, or replacing a battery for your current e-bike. But, if that's what you need, larger capacity packs are available and will get the bigger jobs done!A vast majority of the time, a lightweight ebike is what most of us need. Though Li-ion batteries need an intelligent charger and a plan for charging and discharging, they are much better all-rounders for our purposes. Going out for a short errand and then plugging in the charger can be quick and convenient, and 30 minutes later I can go out again with a full charge if needed. These batteries were once the standard battery type for most electric scooters and electric bicycles. We’re going to help guide you through the world of electric bike batteries. Bike Europe, a publication claimed to be the “leading trade journal for the bicycle, e-bike market” recently published a courageous story on the dangers of Lithium-Ion batteries used in the majority of electric bikes (e-bikes). It can’t sustain this draw for long but can take it in bursts. Combination of Volts and Amps equal Watts. Every company, website and sales person struggles with this, on one side you have the desire to claim the best case scenario as it makes the best sales pitch, but on the flip side, if it looks too good to be true, It usually is. The Takeaway: Because most systems are standardized, what were really looking to maximize is total range, or time before you need to recharge the battery. Below, you will find information to get you on the right path to ebike happiness!.. Choosing the right connectors for your electric bike battery can be a critical decision for a person who is new to electric bikes. As the testing standards vary hugely between brands there isn’t much point in listening. Some electric bike models boast a removable battery, which is very convenient as you can charge it on or off the bike. A complete answer to this question is quite long as you will see in this video . As e-bikes generally use 18650 cells that output around 3.6V this is how we calculate the overall voltage. BLOG | (*insert fine print here). On new or recent e-bikes you invariably get some kind of lithium-ion battery. An electric bike controller is what connects all the electrical components together. There buddy... hold on.. Not so fast... and will set a limit of how many Amps are allowed to flow to the motor, it's Maximum Amp rating. Well, ladies and gentlemen, my personal number one pet peeve, Range Estimates! Well that would be thirteen cells, making 13 x 3.6 = 46.8V. On this type of electric bike, on typical fairly flat roads, not much wind or none at all (because a bit of wind, can make a big difference in energy consumption! … nearly 10x the price for only double the range? Cheaper cell makers might lie and you’ll more often get complete duds or cells that lose charge faster. The common " 36v" number is an average operating voltage or sometimes called nominal voltage.Electric-Find.com says: "Voltage, Nominal. Back in the old days (oh god.. Did I just write that ?.. 20 x 3.6 = 72V. – Electric Bike Class 1, 2 + 3, © 2021 ebikeguides.com - All written content is copyrighted. The third is an internal, non-removable battery. In the event you need to return a pack for warranty, you would be doing so as well.Energy Density is how much energy a battery can hold for a specified volume (Wh / Liter), unlike typical liquids where 1 Gallon occupies a given space. So, a little backwards math (Wh÷V=Ah) will giv… Different Voltage batteries probably won’t work with different e-bikes or controllers. These are Lead Acid (PbA), Nickel Metal Hydride (NiMH), Nickel Cadmium (NiCad), and Lithium-ion or Lithium Polymer. What is an electric bike? https://www.ebikekit.com/blogs/news/electric-bike-batteries-explained The battery is the other key component of an ebike. We are building our data base for electric bicycle replacement Batteries, should you not see a part or item you need please call us at 866-218-0902. Installation Videos Fact is this, expect typically 20 miles / 32 Km from an average 6 to 8 Lb Lithium battery, that is the universal truth and pretty much the most honest statement a company can make. Electric bicycles are available in a wide range of power levels. Lithium-ion batteries. Batteries are heavy, as are motors, so by adding extra kit to a bike that wasn’t designed that way will change its characteristics. With cheaper brands a few cells of the battery might be less efficient than others and more likely to fail earlier. What is a Battery Pack? The last thing you ever want to deal with, is being far from home and suddenly losing power! Because you must have a battery that is powerful enough to deliver those amps without overheating, shutting down, blowing a fuse, etc.Generally, a 10ah battery will work well with a 20 Amp controller or less. Electric bike batteries are probably the most important part of your ride. Not all packs are labeled and/or constructed the same, so be careful and pay close attention.Wh Example: 36v 10ah = 360wh and 48v 10ah = 480whA word of confusing wisdom, if you consider a bike that can run on both 36v and 48v, that goes faster on 48v when run at full throttle. The voltage of electric bike batteries is measured by multiplying the amount of individual cells in the battery by the output in voltage of each cell. An electric bike using throttle only will use more power than a pedal assist, so if you have both it’s best to stick to pedal assist. Voltage is the power or force that the battery can deliver. Less charges and less empty to full charges will make the battery last longer. not always that easy and certainly not very simple for most of us.. or is it? If you become a real ebike enthusiast later, the connector you select now will impact your ebike experience for the next 10 years. That being said, if your needs are more utilitarian in nature, like an electric trike hauling a trailer of groceries or children , or in my case a 70 Lb dog, up some major hills against strong wind. A pack that lasted a few seasons or survived a 6 month vacation on a bench without self-discharging to death was a rare thing. Different brand chargers and batteries don’t often work with each other. Many smaller vendors do not ship UN certified and do so illegally. Going out for a ride with confidence, knowing that you will have a great time, enjoying the ride, the sights and sounds and then getting home without any stress is the ultimate goal and will result in you wanting to do it over and over again.. Every day.. "Ebiking" is a way of life for some of us, equipment failures and getting stranded far from home, not on my list, at any price! Complete E-Bikes The individual cells of a battery are made by many different companies. Complete E-Trikes In terms of electric bikes, “batteries usually have volts in sequences of 12 such as 12, 24, 36, 48,” said Geurts, adding, “volts pretty much mean power — how powerful a battery can be, but it also lends to top speed.”“A 48V battery will not likely propel an electric bike 50 miles per hour because it simply doesn’t have enough pressure to rotate a wheel that many revolutions. Do not charge a frozen battery pack, bring it to a warm location and give it time to warm up, if you are comfortable in a tshirt, so is your battery. Battery packs and cells have improved greatly and today in 2017 we finally have reached a point in evolution that reliability and quality packs are readily available, it's the finer details that matter most, like getting one from a reputable vendor who will back a warranty and who sells enough of them quickly to keep recently built packs in stock.BMS and Chargers, to protect and charge your pack. The motor itself does not care, but the rest of the components do; controller, throttle, display, etc.Amps: in order to pick a proper battery, you need to know about your ebike " Controller ", this is something found on every single ebike, it does exactly as it's called, it controls the power between the battery and the motor by pulsing on/off very quickly ( aka : PWM, Pulse Width Modulation ). Older second hand e-bikes may have other chemistries; the earliest e-bikes featured very heavy lead acid batteries, then came nickel-cadmium and nickel-metal hydride, both of which were lighter and can still be found to retain a useful amount of … Wattage is calculated as Volts multiplied by Amps. Charging speed depends on the battery size, wattage, and the charger speed. The continuous current rating of an electric bike battery is the highest continuous draw the battery can handle in Amps. Typically, higher Voltage electric bikes go faster, while higher Amps require thicker gauge wires and/or more powerful and larger battery packs. It might seem like a good idea to have a pack with twice the energy you need so that you never run out on even your longest trip, but this can be a mistake, too often repeated!First step, determine your needs. A commuter e-bike or one more suited for easier cruises might have a larger battery as it aims for better range. They aren’t a huge upgrade if you’re considering one vs a 48V. Most ebike kits with displays that show battery charge levels with a series of LED lights can only work at that voltage, if in doubt, ask the vendor! Keep this in mind if you’d like a bike to last a long time and expect to replace and upgrade a battery in the future. Batteries Reputable vendors will proudly advertise about shipping legally aka: "UN Certified", a very expensive process to insure safest possible shipping. Multiply that by the voltage the battery supplies – in e-bikes this is usually 36v, although 24v an… pedelecs) and bikes that add a throttle, integrating moped-style functionality. Well, in that case, you not only need a bigger battery, you need a bigger motor, stronger bike, heavier, more expensive, you get the picture? Two battery packs of identical size can contain different amount of usable energy. Bear in mind that chargers are rated in volts and should be matched to the batteries voltage. Owner's Manuals While there are a lot of chemical combinations that can and have been made into useful batteries, in practice there are only four rechargeable types readily available in sizes suitable for ebikes. See the jargon section for an explanation. 1 – Ignore Range – Calculate Watt Hours Yourself. can it ?The Big Question: How do you get the most battery for your hard earned money? Watt Hours means how many Watts of power the battery can provide at full power for one hour. All batteries and battery packs will have fine print, listing various things of high importance, put on the bifocals and squint, expect to find things like :Volts: Used to describe how fast electrons move, more voltage = more speed !Amps: How wide the road is, more lanes, more cars can pass at the same time side by side...Watts: The combination of Volts and Amps ( Volts X Amps = Watts )Amp Hours: Should always be listed, typically 10 to 20 Amp Hours ( abbreviated " Ah " ) a measure of how many fixed number of Amps a battery can sustain for 1 hour.. ( C rate ). A 36v pack, at 42v is fully 100% charged and holding as much energy as it can and at 30v it should shut down and stop giving power before causing permanent damage.. More on BMS (Battery Monitoring System) in a bit. Sometimes some controllers have " Watt ratings" while others will show "Max Amps" and this can lead to confusion.. In the short term you won’t worry as much about hills or longer rides. For example, in earlier days of Lithium a typical 18650 cell would hold about 1000mah (One Thousand Milliamp Hour "mah" = 1 Amp Hour "Ah"), fast forward to today as of this writing in 2017, there are cells available that are the same size (18650 cells are 18mm wide and 65mm long) and can hold upwards of 3500mah! The core function of an electric bike controller is to take all the inputs from all the electric components ( throttle, speed sensor, display, battery, motor, etc.) Electric bike batteries usually have a greater capacity than this. Check the connectors and motor/controller power before buying or swapping. From 2021 onward we don’t recommend buying anything other than a Lithium-Ion e-bike battery. Yes, this is a possible problem to consider. Do Throttle Electric Bikes Use More Power Than Pedal Assist? The job of an electric bike battery is simple – they provide power for the motor to turn the wheels. Ok, time to crunch some numbers and get down to the nitty gritty of it. An electric bike battery is made up of a collection of smaller battery cells wired together with a few safety measures to stop discharges of fire. A larger battery capacity also means a physically bigger and heavier battery. .. The biggest problem is that if you ever do run out of battery at the wrong spot you could have a hard time getting where you need. Keep in mind that e-bike batteries are temperature-sensitive, and store accordingly when it’s extremely cold … Your electric bike relies on its batteries and you rely on your electric bike, so look after the battery and it will look after you. E-Bike batteries come with two different current ratings. However, fast charging a lot isn’t healthy for the battery. You must pick the right pack, for your application!Volts and Amps: Without going into too much confusing detail, Voltage is what pushes ( speed ) the flow of electric energy, while Amps is a measure of Force. The important figure to look for is Watt Hours, also written as Wh. As we just made the preorders for the bigger battery version of the SIERRA, the SIERRA MAX available, today appeared as a great opportunity to thoroughly explain the fundamental principles and physics behind Lithium-ion batteries and why they currently are the state-of-the-art in electric bikes.When looking at batteries, you basically want to maximise … )Too small? They are then normally packaged up in a weather-proof container called a shell, case, or box that’s removable and has an easy way to plug in and charge. They can make a hilly or long commute more manageable, get you further afield on leisure rides, or restore a lapsed love for cycling. A typical 36v ebike needs a battery that delivers power between 42v to 30v. Read-on! The publication had a fire safety engineer and battery safety professional examine the aftermath of a fire ignited by an… If a battery is meant for a specific voltage e-bike motor or specific model then the battery will also have a Watt Hour (Wh) rating. The simplest way is to times the Voltage (V) of the battery by the Amp Hours (Ah). ), while barely pedaling, like very leisurely but not working up a sweat, on good and pumped tires, typical 200 Lb or less rider, expect burn rates of 10 wh/km .. or 17 wh/mile on average. Charging an electric bike battery takes from around 3 to 6 hours from 0 to 100%. MANUALS | A pack with simple shrink wrap is less expensive but care must be taken to mount it safely in order to prevent crushing of the rather fragile cells or damage due to vibration while riding, or when the bike tips over and hits the ground (not if.. but when! If you just cannot afford a proper Lithium battery pack, lead is the least possible option available to get you on the road. If you are at a complete stop, and just jam the throttle on full, the controller will step in and way " Woooah.. That makes 48V rounded – good enough! More range and less weight are not possible in real life, until battery tech improves significantly, those are the realities, for everyone. In the early days of ebikes most batteries were lead acid, Nickel Cadmium, or NiMH, but modern ebike batteries are almost exclusively lithium-ion. No spam, no selling your details, once a fortnight max :), What Are The E-Bike Classes? They're both essentially measuring the same thing but Watt hours is taking over as the standard because it's a bit more consumer-friendly. That’s mainly because higher voltage means more individual cells, meaning in theory less load on each cell but a higher overall output. For example a 36V battery is made up of ten 3.6 Volt cells. To do that, look for an e-bike battery with a high Watt Hour rating.Most modern major e-bike motor systems (think Bosch, Continental, Brose, Panasonic, SR Suntour, and Yamaha) have 36V batteries. While there are many types of batteries, most ebikes use lithium-ion batteries (including our ebikes). Very few people have the tools to measure a battery pack's capacity and some vendors may take advantage of this. That can't be right ?. Updated February 12, 2021. The simple answer is that an electric bike (e-bike for short) is more or less a regular bike with the addition of a motor to assist your progress. Manufacturers make many claims about range based off of very tight and specific “testing” they do. Simply put W = V x A. It’s the part that supplies electrical energy to the motor. So a 36V charger might not work if you upgrade from a 36V to a 48V battery. Electric bike batteries are probably the most important part of your ride. The cost is low and the chemistry well understood: Always charge up the lead acid battery whenever you … It’s always worth sticking to name brand cells known as the big 5 – Samsung, Panasonic, Sony, LG, or Sanyo. and then determine what should be signaled in return to them (motor, battery, display). Also, you can translate it into how many watts, continuous, for 1 hour! But otherwise, the more Wh you have on the bike, the more range you can expect from it.What does all this mean to you? HELPFUL VIDEOS | This isn’t because the cells are necessarily the best but because quality control and consistency is better. Shipping The Battery Pack. I do, however, go out for multiple rides in a day, very often! The most important thing to look for when comparing electric bikes is the Watt Hours (Wh) and Watts (W). And in case anyone asks, electricity from the wall costs about 10 cents per Kilowatt Hour (1000wh = 1 kwh) so your 360wh battery pack only holds less than 4 cents of power on a full charge!Legal Shipping of your pack, this is a highly controversial topic, given the significant amount of energy these battery packs can contain, there are regulations and proper ways to package, ship and handle them. Electric bikes enable you to go further, get more rides in, keep up with the pack, haul larger loads and add a little to your overall pace on your commute. As you can see there is a lot to consider if you really want to delve deep into lithium battery packs that are made to power electric bikes. In a perfect world, the BMS will sit there and do nothing but if you do ride until you use up all the energy available, it will shut you down and prevent any damage to the battery cells. As soon as you pull the throttle or start pedalling on a pedal assist model, an electrical switch is connected that creates a full circuit in which electricity can flow, telling the controller to then connect the circuit from the battery to the motor, and the LCD screen if your e-bike has one. You can get faster chargers that take 1-2 hours. They’re a popular cell because of the versatility of this size and good output. It's important to understand how your ebike works, a 500w kit does not use exactly 500w, all of the time. A 72 V battery with a 10Ah rating would also be 720Wh. ... Best electric bike 2021: ebike types explained and how to choose the right one for you. 10 x 3.6 = 36V. There are a few different types, and they each have their pros and cons, so read on for more on what to consider before you buy. You can also get 52V batteries which is just one extra cell than 48V ones – 14 x 3.7 = 51.8V – basically there and sometimes called 50V. *We are considering a 15ah lead-acid battery against a 9ah Li-Ion battery here because the usable capacity (in typical high-amperage use on an E-Bike - see Peukert's Law) of the 15ah lead is only about 9ah (66%) - note that they have the same range*. The cells that make up the larger battery will normally be made up of Li-Ion 18650 cells which are named for their size – 18mm wide by 65mm high, 0 for the cylinder shape. That being said, electric motors are made to turn at a certain RPM for a given application, determined by its construction.. the bottom line here, a 36v bike will go faster with a 48v battery pack (if the electronics between the motor and battery are compatible). For a long time, lead acid has been the defacto standard for EV's. And most every brand’s system lists the battery’s Voltage and Watt Hour ratings. However, if you’ll just use go faster, you draw more power and this doesn’t make a difference. The middle is a purpose built battery mounted in the bikes frames but still removable. It can be much more or much less depending on countless factors but this is a realistic number to start with.For example, a 36v 10ah battery pack with 360 wh of capacity. You will need to purchase the correct voltage battery for your motor kit and you will need to take into account the continuous current rating of your motor controller – for example a Bafang BBSHD has a 48v 30A controller, so you would want a 48 volt battery with a continuous current of 30A. Many kinds of e-bikes are available worldwide, but generally fall into two broad categories. There are a few technologies used in e-bike batteries but the most popular is Lithium Ion, or Li-Ion. Amperage measures how much electricity can pass at a time. Picking the right pack for the job is very important. Most batteries on e-bikes are easily removable so you can just take the battery off and charge it where it’s convenient. With just a bit of knowledge, you can make better informed buying decisions, put together the proper kit pieces and ride happily ever after without running out of power and not buying a lot more than you need!Size, weight and shape, three things to consider when making a decision on what pack to buy. If any battery pack could deliver 100 miles of no-pedal range on a single charge and weigh less than 10 lbs, gasoline would cost much less. Components It’s normally the controller and motor that are rated for amps to show how much power they can deliver. All electric bike classes in the US are limited to 750W of motor power. Knowing how far you can go and how much you can push the bike will make a massive difference. For example when you first accelerate up to top power the motor may draw up to the peak to get up to speed but can’t continue drawing this much power for long. To help sort out all the technical issues about motorcycle batteries, we conducted a Q&A with the experts at Odyssey Battery to explain the top 10 things to know about motorcycle batteries. So a 48v battery with an extra 120wh, compared to the 36v pack will not always give you more range, if you go faster than the 36v bike would be going at full throttle.... but who can resist going faster? urgh) getting a lasting pack was pure random luck and a rare thing at that. The battery is the energy source that powers an electric bicycle and is typically the most expensive part of an ebike system. Bicycle Kits However, given the rider is pedaling and providing human power, this is not no-pedal range and makes a significant difference.If your ebike has a handlebar throttle, that allows the motor to run without pedaling, power consumption is much greater. The relationship is simple to explain: a battery with a 10Ah capacity is theoretically capable of supplying 1 ampere of current for 10 hours (or 10 amperes for 1 hour). The more complicated answer is that it is a hybrid form of transport meaning part of the power comes from the rider (exactly how much is up to you) and part of it from the motor. Easy! The battery is the key bit of technology for e-bikes that makes them possible. Voltage: most ebike kits are rated for a specific voltage range. What about a 48V battery? This pack would in theory provide 36 km of range, or 22 miles, from a full 100% charge.Now, before all you engineers light me on fire for averaging numbers and being loose with specifics, I am doing this for simplicity reasons, your actual mileage will vary. It has to fit and not be too heavy, and should look good once installed on your bike. Most aren’t as simple as a USB port charger like with phones and will come with their own charger system that will plug in to a wall socket. As with all batteries your e-bike batteries will need charging. In China, on the other hand, lead acid batteries are still the most common ones used. Best electric bike 2021: ebike types explained and how to choose the right one for you The products mentioned in this article are selected or …

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