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  1. C

    BMS problems

    ok so my bms has been acting up i just "installed" it on my battery and everything was fine and it balanced but the 2nd time charging it wouldn't power my ebike (voltage would drop a lot not sure on exact). and i tore the battery back open. 1st i reconnected the balance leads, no luck 2nd...
  2. C

    Building a 72V battery

    So i plan to get the EEB eduro frame But I also want to be able to fit a 72v lithium battery inside. So whats the best layout for the battery for space to get max amps at 72v? If there are more spacious frames for around the same price I'll take it I'm using Samsung 25r's for my current ebike...
  3. C

    Building a Powerful Ebike

    I am planing to build a powerful ebike [my 2nd one] but I not sure what I need. First I'm either gonna need a fat bike or a regular bike with 150mm dropout for obvious reasons but I'm not sure what to get as I dont want any of those frames that look like dirt bikes like the grey borg or stealth...
  4. C

    Will hub motor fit Razor e300? Also want rear disc brake

    i Have an old e300 that i haven't used in years. so i want to upgrade it to go around 25mph with a good amount of torque. Im 270lbs to its gonna need some decent power. I want to put a front hub motor on it but and as far as I can see the front dropouts are 115mm so would this motor work...
  5. C

    Adding Torque

    So I'm still a bit new to ebike things buts I've recently built my first ebike using a generic 48V 1500W motor from Voilamart. Im using a 52V 20ah battery pack. I wanted to know that if I up the ah of my battery pack to the limit of 1500W will that increase the torque noticeably? Would adding...
  6. C

    Monitoring D.I.Y Battery Pack

    Is there a good way to monitor the temp and/or voltage of a custom Li-ion battery pack. I feel that i am missing something really simple here but I can seem to figure it out. Is a simple temp sensor from eBay all I need for the temp monitoring? Also I'm a noob so keep that in mind. when...
  7. C

    Max Discharge Current Explanation Needed

    How do you know what kind of battery to get i.e. Discharge Current Rating. How would I know what rating I needed so I dont end up overheating and/or killing the batteries? Thanks in Advance
  8. C

    Is This A Good E-Bike Battery?

    I found this ebike battery as i wanted to use a 60v on my 48v 1500w hub motor but its pretty cheap so IDK if its a decent battery or just cheap chinese stuff https://www.ebay.com/itm/60V-20Ah-Lithium-Li-ion-Rechargeable-Battery-with-Charger-BMS-for-1200W-EBike/283118372786
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