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  1. JayKhan

    Help wanted on brandless em-100 Controller

    hi , sorry if i'm replying in wrong way, but i'm using the same controller from last 6 months and it's a great controller , there is no self learning wire, it automatically pairs with the motor, red led is always blinking (as long as i know it don't show anything more than just powered on...
  2. JayKhan

    Rectifier Huawei R4850G2 48V 42~58V 3000w

    I made fast charger from this power supply, to charger 36v , 48v, 60v and 72v batteries - https://youtu.be/YFtxjgEPIoc
  3. JayKhan

    Old laptop cells, ebike battery build

    I have been making batteries from old laptop batteries from last 3 years , and it works , but as mentioned before , 0.5C should be max for discharge as they have already been EOL cells. So good discharge should be 1A continuous. For example for 36v 20A load, 10S20p battery will be good enough...
  4. JayKhan

    Rectifier Huawei R4850G2 48V 42~58V 3000w

    I have only one PSU (new version) which is working, other one old version died when accidently switch wire touched AC input, if I found another new version PSU, i will try the following mod that I'm sharing here. I found it on a Chinese website and mod can be translated with google image...
  5. JayKhan

    Rectifier Huawei R4850G2 48V 42~58V 3000w

    there are two types of R4850G2 (in my experience), the one I modified is slightly different then others i had, all of the others are similar, following pic is of other ones, these one have this abnormal thing that without load fan spins really fast and under load fan become normal. and the one...
  6. JayKhan

    Rectifier Huawei R4850G2 48V 42~58V 3000w

    Voltage adjustment and current limit tested with module. I have noticed few things, one is that PSU works best between 50-55v, other then that, at any voltage PSU fan spins really fast, i don't know why. (without any load)
  7. JayKhan

    Rectifier Huawei R4850G2 48V 42~58V 3000w

    to connect CAN module and power switch, I added 6 pin JST connector on the free space of PSU.
  8. JayKhan

    Rectifier Huawei R4850G2 48V 42~58V 3000w

    For voltage adjustment and current limit, I purchased that CANbus module from taobao via parcelup (Taobao FOCUS becomes Parcel Up) by following the same process which was shown in YouTube video. and received it in 10 days in Pakistan. total cost 37.4$ for 1 module (psu was 14$ and module 37$ lol)
  9. JayKhan

    Rectifier Huawei R4850G2 48V 42~58V 3000w

    HI everyone, just made an account, you guys discussed everything very nicely. thank you I purchased few power supplies (Used ones at 14~15$ each) , searching on YouTube, I found one guy made induction heater power supply with this same power supply and then on google search I came here.
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