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  1. B

    Close To Total Failure?

    How Bad Is This?
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    Who are we trusting these days with prebuilt batteries?

    What store should i buy from? Looking for something 10-15ah 36v. LIfepo4 still the safe and reliable chemistry option? Is ping still in business? Should i go lifepo4, 18650 or something else?
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    What kind of torque arm for 1000 watts 48v mountain ebike?

    Hi there. Will any torque arm do for this bike? Any particular recommendations? I am pretty sure the forks are aluminum alloy. Is a torque arm really needed? Thanks in advance. https://imgur.com/a/lGhE68g
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    Battery Prices Have Plummeted, Except For Ebikes?

    https://news.wttw.com/2020/01/02/falling-battery-price-transforms-economics-green-energy Whats Going On? Even if the extra cost is calculated from china shipping and the more stringent battery shipping rules, it still seems like batteries should be a lot cheaper than they are now. I probably am...
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    Lifepo4 7+years old and the Nail Polish Smell

    I think my lifepo4 has finally bit the dust. I can't test these things because i'm visually impaired. I have it stored in an ammo can and when I open the can it smells like nail polish or something of similar potency. It's always smelled like that from what I can remember but perhaps a bit worse...
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    should you Toss a Leaking LifePo4?

    Or should u ride it until it stops working? The reason I ask is because I am afraid that the battery might be toxic if its leaking. I "think" i smell a sweet smell for years now and yet the battery still works and the red LED'S all go solid after a full charge. Could I be smelling the plastic...
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    Ping Battery Charger: Potentiometer?

    I am wondering if the Ping Battery 5A Charger has a Potentiometer. My voltage has dipped down to 41.7 Volts and that isnt enough to trip the BMS, I am wondering what else it could be other than normal wear? All the Caps look ok, none bulging that I can see. Any Ideas? I believe the voltage is...
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    Anybody have experience with Sun-Ebike.com?

    Their LIfepo4 batteries are pretty cheaply priced. Would they last? Why are other Lifepo4 more expensive?
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    Kickstand Recommendations?

    As many of you have experienced, ebikes can be on the heavier side. My kickstand finally failed to where it wont hold the bike up anymore. I'm thinking about getting one of those two legged ones, but I am not sure which one to get. Any suggestions? I need it to be more heavy duty than a...
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    I think I have a Short

    So today when turning on my ebike I get power for a second then it cuts out. I get power instantly when I reapply the throttle. The strange thing is when I turn the handlebars right I get full power.. to the left I get no power and to the middle I get one little spurt and then a cut-off...
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    Rate My Multi-Layered Ebike Security Plan

    For many years now I have only locked up my bike right where I can see it out the window at a cafe, and if I can't see it and I need to grab a couple things from the store, I run in the store really quick and try to take no more than around 5 minutes. I have now made my ebike my main form of...
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    Need Suggestions For Two-Way Bike Alarm.

    I want to get one of those bike alarms that has tilt/shock sensors and notifies you via a two way radio. I have been looking for them and It seems that many have quite a few negative reviews. Can anybody recommend a two-way alarm that notifies you if your bike is tampered with?
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    A Question for the Speed Freaks: Revenge and Retribution?

    Have any of you speed freaks ever had a passenger or driver from a car throw something at you, cut you off, then they sped off thinking that your puny bike could not catch up? Did you ever catch up to someone and confront them, grab their license plate etc? I don't have a very speedy bike, but...
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    48v 11ah@20mph vs 36v 15ah@20mph

    I plan on using a cycle analyst to cap my speed at 20mph. Which setup will give better range?. I was thinking about going 48v because wind and hills are causing me to slow down too much. What would you pick if you capped your speed to 20 mph?
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    Anything That Beats Lifepo4 In Terms Of Longevity?

    I want to know if there is anything that beats lifepo4 in terms on longevity/cycles. And if there is something that is longer lasting than lifepo4, is it maintenance free?
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    This Custom Ebike Is Pretty Cool Looking

    I found this on youtube. I don't know if this is a ES forum memeber or not, but this bike is awesome. https://www.youtube.com/embed/saeoUfhP3QI
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    CA Ebike Law: Can you Class II and Class III hybrid?

    I am thinking about making a bike that only goes 20mph throttle only but can be pedal assisted up to 28mph. It would be a combination of class II and III ebike. Would this be in accordance with California law and if so, how would you go about doing it? I would like to convert my current bike...
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    Is a off-gassing Lifepo4 dangerous for your health?

    Can I use the battery even if its off-gassing, or should I send it to a recycle place? How long does an Off-gassing battery take to completely off gass? Is there health risks involved?
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    Any Manufacturer Make empty BMS/CASE combo for 18650 Cells?

    What would really be great is if a quality BMS was already mounted and wired to a battery case. All you would do is pop in the batteries like you would for a cordless radio. The case and bms would already be wired to monitor each cell. You just have a nifty lcd CA like device on the BMS and if...
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    Whats Fueling All These "Never Come To Market" Companies?

    All these claims can make one excited, except for the fact that we never see results. How can companies get away with this? So are there some companies that get bought out by the oil or human slave keeping oligarchy? Or are all of these companies just have bogus claims? The last one I got...
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    LIfepo4 36v 15ah 4 years later 10 mile range.

    My Ping battery is dying on me. Well it has slowly been dying. I cant take the battery apart or put the meter leads on the bms because i have a visual impairment and chances are that I would shock myself or cause more damage to the battery. The Only thing I could do would be to check the...
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    Making A Distance Trike, I just might go SLA

    Before you die of shock, allow me to explain. Lithium is expensive, plus it isn't as straight forward as SLA is when it comes to charging while riding. (solar or generator) I am thinking about doing a tricycle and throw some SLA batteries in the cargo or lower-mid frame and have a generator...
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    Where Can I buy a 48v 15AH fuel cell?

    This technology has been around for years. Where can I buy one? The Design looks pretty low cost as far as materials are concerned. If they are super expensive.. Why? Isnt this the holy grail of electric vehicles? A little tube of hydrogen that can take your ebike 100+miles? Where do I buy it...
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    Going Over-Spec on a Battery Extend Usability and Lifespan?

    so if you need a 36v 15 ah battery, but you instead buy a 48v 20ah battery. Would this mean that you could go past the number of cycles the battery is rated for without losing performance? I have heard that once you reach a cycle limit that many batteries will continue working but at lower...
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    This is all I ask for in an Ebike (bicycle form)

    http://www.aliexpress.com/store/product/New-fully-enclosed-electric-four-wheel-electric-scooter-electric-bicycle-old-Scooter/436811_32379347835.html Somebody plz make it happen. 20 mph top speed safe from the elements... migght even be safe from bears DO it do it do it!
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