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. 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. Well, the first step is to learn about and get an understanding of the basics regarding battery packs, then determine what you need and what you can afford. If you pedal without using power, your battery remains fully charged until you use it, It is entirely possible to ride a whole day on a charge by using it sparingly. These are really important to note if you are buying a new e-bike or replacing a battery. Chargers are normally measured in Amps. If you will be using your e-bike regularly you’ll need to have somewhere you can plug your bike in and leave it to charge overnight. 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. This isn’t because the cells are necessarily the best but because quality control and consistency is better. 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. 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. What Are Electric Bike Batteries Made Of? 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. Overall your biggest consideration as a buyer should be to know how to care for your battery pack, do your research and buy from a reputable vendor that is shipping a UN Certified pack legally and most of all... to buy the pack that best suits your e-bike riding needs. BLOG | urgh) getting a lasting pack was pure random luck and a rare thing at that. Sometimes some controllers have " Watt ratings" while others will show "Max Amps" and this can lead to confusion.. That makes 48V rounded – good enough! can it ?The Big Question: How do you get the most battery for your hard earned money? 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. It’s always going to be worth spending a little bit more on a better battery or bike/battery combo. Capacity is usually measured in Amp hours (Ah) or Watt hours (Wh). If you just cannot afford a proper Lithium battery pack, lead is the least possible option available to get you on the road. What is an electric bike? The battery is the other key component of an ebike. A typical 36v ebike needs a battery that delivers power between 42v to 30v. For more information check out my electric bike batteries explained article. Instead of comparing the range given by brands you should calculate the Watt Hours yourself. A nominal value assigned to a circuit or system for the purpose of conveniently designating its voltage class (e.g., 120/240 volts, 480Y/277 volts, 600 volts). For a long time, lead acid has been the defacto standard for EV's. The simplest way is to times the Voltage (V) of the battery by the Amp Hours (Ah). Why does this matter in terms of picking the proper battery pack? 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.) Similar situation with the charger, the BMS will allow the charger to do it's thing as long as all the cells are in harmony and within their limits, a quality charger is very important and often completely overlooked, I have witnessed great battery packs destroyed by horrible chargers.Mounting your battery pack to your ebike can be a challenge, there are ideal locations and there are convenient one's, rarely do they come together as one. Typical electric bike batteries make about 350–500 W of power (that's about 35–50 volts and 10 amps), which is about a quarter as much as you need to drive an electric toaster. Electric Bike Batteries Explained. The common " 36v" number is an average operating voltage or sometimes called nominal voltage.Electric-Find.com says: "Voltage, Nominal. Cycling Plus April issue on sale now! HELPFUL VIDEOS | Be the first to get new e-bike deals and guides! We’ve had electric motors small enough but only recently have batteries become small, light, and stable enough to help cyclists without big downsides. The point I'm making here is that an ebike with a small battery pack is lighter, costs less, is far more enjoyable to ride and can be charged quickly while providing all the range you need even if it's not all on a single charge. Well, ladies and gentlemen, my personal number one pet peeve, Range Estimates! 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. (36 volts times 10 amp hours equals 360 watt hours). *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*. It's a pack of batteries! Different Voltage batteries probably won’t work with different e-bikes or controllers. Tricycle Kits Voltage: most ebike kits are rated for a specific voltage range. Though Li-ion batteries need an intelligent charger and a plan for charging and discharging, they are much better all-rounders for our purposes. 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 a 36V charger might not work if you upgrade from a 36V to a 48V battery. If any limits are reached the BMS should intervene by cutting off the power safely. They aren’t a huge upgrade if you’re considering one vs a 48V. ... Best electric bike 2021: ebike types explained and how to choose the right one for you. 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. 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 ). Accessories Troubleshooting MANUALS | Components 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. 800W / 400W = 2Wh. 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. The faster you go, the more energy you need! Wattage is calculated as Volts multiplied by Amps. It’s always worth sticking to name brand cells known as the big 5 – Samsung, Panasonic, Sony, LG, or Sanyo. Your battery needs to safely handle the "Peak" or "Max" when needed.Quality: a battery pack is only as good as it's weakest cell, and as durable as the thing you put it in! However, if you’ll just use go faster, you draw more power and this doesn’t make a difference. pedelecs) and bikes that add a throttle, integrating moped-style functionality. Consider a 6 Lb Lithium battery pack can go as far as a 30 Lb lead acid battery of equal voltage. .. say what ? So a 48 V battery with a 15 Ah rating would be 720Wh. Bicycle Kits No spam, no selling your details, once a fortnight max :), What Are The E-Bike Classes? 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. 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? Below, you will find information to get you on the right path to ebike happiness!.. So an 800W battery would power a 400W motor continuously for 2 hours. 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. Electric bike batteries are probably the most important part of your ride. Order Tracking On new or recent e-bikes you invariably get some kind of lithium-ion battery. Amperage measures how much electricity can pass at a time. Many kinds of e-bikes are available worldwide, but generally fall into two broad categories. Watt Hours (Wh) is far more important because it factors in the Voltage and the Amp Hours together and determines how far you might go on a full charge. See the jargon section for an explanation. Batteries are heavy, as are motors, so by adding extra kit to a bike that wasn’t designed that way will change its characteristics. Do Throttle Electric Bikes Use More Power Than Pedal Assist? Well that would be thirteen cells, making 13 x 3.6 = 46.8V. The third is an internal, non-removable battery. A good Lithium battery pack can cost as much, and often even more than the rest of your electric bike kit. This is less clear cut that many people think but in general a higher voltage battery will perform better. Charging speed depends on the battery size, wattage, and the charger speed. 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. Many modern e-bikes come with 650-700W (Watt) capacity as standard for a better range. 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. The cost is low and the chemistry well understood: Always charge up the lead acid battery whenever you … This means that the battery should be able to draw power at this rating non-stop until the battery is drained. The important figure to look for is Watt Hours, also written as Wh. A 72 V battery with a 10Ah rating would also be 720Wh. A larger capacity battery will not have to work as hard as a smaller battery when used on a given bike. It has to fit and not be too heavy, and should look good once installed on your bike. Voltage is the power or force that the battery can deliver. 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. In order to insure a long life, battery packs should contain a BMS, aka: Battery Monitoring System. The publication had a fire safety engineer and battery safety professional examine the aftermath of a fire ignited by an… The battery is the energy source that powers an electric bicycle and is typically the most expensive part of an ebike system. 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! Read on for everything you need to know about e-bike batteries. The three most common symbols when looking at bikes are “V” for Volts, “Ah” for Amp Hours, and “W” for Watts. Batteries Less charges and less empty to full charges will make the battery last longer. We’re going to help guide you through the world of electric bike batteries. 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. 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. A commuter e-bike or one more suited for easier cruises might have a larger battery as it aims for better range. Having an internal battery can help to stop theft of the battery but will mean you’ll need a space in a garage or bike rack to charge it. Check the connectors and motor/controller power before buying or swapping. 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. Manufacturers make many claims about range based off of very tight and specific “testing” they do. The third key e-bike component is the power in the throne – the battery. 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. 10 x 3.6 = 36V. 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. However, fast charging a lot isn’t healthy for the battery. Electric bikes do need a bit more attention than ordinary bikes, but these simple precautions will prolong their life, and give you many happy years of electric bike cycling. Most road legal electric bike kits use a 36v battery, the more powerful motors may use a 48v or even a 52v battery. Think raw power with the higher being more powerful. Using the assist at the lowest setting you are comfortable with will make the battery last much longer too. 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. Complete E-Bikes Electric bike batteries usually have a greater capacity than this. When a controller is rated for Watts, you need to know if this is "Maximum watts" or "Continuous watts" with a higher peak. E-bike batteries are made of individual cells that are normally Li-Ion 18650. 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. Most batteries on e-bikes are easily removable so you can just take the battery off and charge it where it’s convenient. And most every brand’s system lists the battery’s Voltage and Watt Hour ratings. 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 ). The actual voltage at which a circuit operates can vary from the nominal within a range that permits satisfactory operation of equipment.May 28, 2009"Some ebike kits have a wide operating range like 36v or 48v, so be aware and pick accordingly. Most people, myself included, rarely go more than 20 miles at a time without stopping ( 32 km ), usually much less. There are many other factors to consider (C rate and Internal Resistance of cells used in a pack) .. but this is beyond the scope of this text... google "C rate lithium battery"Battery Care: Make it last, learn about proper use and care, even with a BMS that will shut down the power safely, it's always best to keep charging and try to never run the pack down all the way, this applies to all battery types. So, a little backwards math (Wh÷V=Ah) will giv… How Much Power Does An Electric Bike Use? Owner's Manuals 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. While there are many types of batteries, most ebikes use lithium-ion batteries (including our ebikes). 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. They also provide power for any gadgets you have like the controller or “brain” that measures speed and pedaling to figure out how much extra power you need. 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 … Amp Hours (Ah) means nothing unless you factor in the voltage. The Battery Pack. The following terms are closely associated with batteries. A word of caution, some vendors are prone to bending the truth and "over-promise" when it comes to range expectations. It's important to understand how your ebike works, a 500w kit does not use exactly 500w, all of the time. If you use a electric mountain bike you may need extra batteries or a more portable charger for quick charges in between runs. All electric bike classes in the US are limited to 750W of motor power. Different brand chargers and batteries don’t often work with each other. – Electric Bike Class 1, 2 + 3, © 2021 ebikeguides.com - All written content is copyrighted. 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.

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