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  1. M

    Battery won't charge

    Hi, I connected the bms to the 14s battery and in output it shows 54 V. The cells charge is 3.89 on average. I connected the battery to the bike and the motor works, but when I try to charge the battery, it doesn't charge. The same battery charger works on other batteries. What could it be...
  2. M

    e-wheelbarrow connection to controller

    Hi, I have a wheelbarrow with a 48v 350 watt motor. I have a 48v battery (that works with my ebike). There are 2 brakes and a 3-speed accelerator. I tried to connect the wires to the controller like the photos attached, but it doesn't work. What am I doing wrong? Someone can help me? this is...
  3. M

    Battery issue - Output battery different from BMS

    Hi, I've got a lion battery 14s 10p 48 v with a Signalab BMS, the battery full charged is 54.6v, but the output of the BMS on the motor supply cables is 41.8v. I replaced the BMS but the output is 41.8v, I Checked the battery from + to - and is 54.6v. When I charge the battery, the charger...
  4. M

    How to connect Ht 3525 motor to controller?

    Hi, I have a Crysalyte HT 3525 with the plug in attachment for power supply, I would like to buy this controller http://em3ev.com/store/index.php?route=product/product&path=41_38&product_id=82, but I don't know how can I connect to the motor. I have a 72 v Battery 22.6 ah. Accessories to...
  5. M

    36V Battery Not Charging

    Hi, I have a Lion battery 36V 10s 8p (2200 mah - 17.6 Ah) with a 36V charger. I connected the charger and it seems to work normally. It loaded all night, but the battery remained at 37,7V instead of going to 41V. I checked the voltage of the battery and indicates 37.7V. I checked the...
  6. M

    25A Controller 35Ah Battery

    Hi, I would like to know if I can power a motor with a 25A controller (750W Bafang) with a 35Ah battery without burning the controller. Thanks. Mark
  7. M

    Bafang 1000W BB 100mm diameter?

    Hi, I saw in the em3ev site (http://em3ev.com/store/index.php?route=product/product&product_id=215), that they sell the Bafang 1000 watt with 100mm bottom bracket, but I don't understand the diameter. I already have a Bafang 750W and the bottom bracket diameter is 33,35mm. Is it the same of...
  8. M

    Bafang CST 500W Really Really Hot

    Motor: 36V 500W Bafang cst Battery: 26Ah Controller: http://www.aliexpress.com/item/36V-48V-500W-12mosfets-electric-scooter-motor-controller/1351616109.html I did 3 km uphill to 8% and 3 times I had to stop because the engine was really hot. Then I went in the street to see if the air will...
  9. M

    Bafang CST 500W 48v to 36V

    Hi, I've installed a Bafang 500w Cst 48v with a 36v controller and 36v battery, but it doesn't work. I've tested all the cables with a multimeter, from controller to the Bafang motor, and everything is fine. The battery has 41V and works great. Is there something else that I have to check...
  10. M

    Install PAS

    Hi, This is my today problem: install a PAS The pin where the pedal should be mount is short, if you add 4 mm thick of the disk with magnets, the pin enters the pedal to 8 mm. How can I fix the problem? Do you have ideas? Thanks. Mark
  11. M

    Spokes length

    Hi, I would like to buy a bafang 500w 36v CST to use it in my Big Hit. The rim I choose is a Mavic Ex 729 strong enough for my porpouse. The question is about the spokes. I would like to lace the motor ( for the first time) and I don't know what pattern is the best and which spokes to use...
  12. M

    Bafang acronyms meaning

    Hi, This morning i visit the Bafang site http://www.szbaf.com/product.asp?pid=1, but I don't know what is the meaning of the acronyms EF-R（Roller brake） CST（Cassette freewheel） SWXU SWXK5 SWXK SWXB SWXH SWXP Can someone explain it? Thxs!
  13. M

    Motor for my Big Hit.

    Hi I have a Specialized Big Hit and I really enjoy going down, but the hardest part comes when I have to face the 900 meters in altitude. At this point I thought to put a motor, something very balanced: I don't need great speed and the battery will be put in a backpack. I had a couple of...
  14. M

    Bafang 750w = 33 km/h?

    Hi, I have a bafang 750W mid 48v with a li-ion battery (Samsung 18650) 14s. 15.4 Ah. I'm surprised that the max speed is only 33 km/h. I expect more! Do you know why? I have to change something? bike + me = 100kg --- no hills I regulate all the setting from the Lcd display. Thx. Mark
  15. M

    Bms Load and Charge together?

    I've changed the battery of my granpa ebike from lead acid to li-ion+BMS. In the battery case there is only a connector that have 2 functions:charge and load. I try to figure out how can i use the same connector to charge and load with the Bms installed in the battery. As the image...
  16. M

    Li-ion faster charge

    Hi, I've got a 36V battery (10s-8p) made with li-ion (18650) 2200mah. Now I first balance/charge the battery with imax B6 (at 1A), but It takes ages before it finish!! If I choose to buy a bms and a bulk charger like this...
  17. M

    Signalab BMS 10s to Battery

    Hi, I need help to connect the Signalab BMS 10s to the battery pack (36v). It's the first time and I don't want to burn it. Can someone help me? Thanks.
  18. M

    Ebike frame certification?

    Hi, I have a raw project of an ebike frame (motorbike style) that I would like to build in a near future. If I want to sell the frame, which type of certification I need? Thanks. Mark
  19. M

    Connect battery to Bafang motor

    Hi, I prepared a Li-ion battery for my mid motor Bafang, and now I try to understand how to connect to the motor. The motor has 2 cable: one red (positive) and one black (negative), but I don't know wich connector I have to buy to connect motor to battery. Thank. Mark
  20. M

    Lipo battery pack user friendly?

    Hi, Is it possible to build a battery pack user friendly with Zippy or Turnigy ? For user friendly I mean a battery pack that, when is discharge, I can plug whitout disconect them from series and connect to an imax b6. Thx Mark
  21. M

    BMS and Protected Battery

    Hi, I'm asking what is the difference between BMS and Protected Battery. If I buy protected battery, I have to install, in a DIY battery pack, also the BMS. Hope this question is not too silly! Thanks Mark
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