Recent content by pmmali

Good evening guys. I have converted a Mini petrol car to an electric After converting the car, The car can be driven but it makes very noise. and I never saw this kind of motor. This motor is running in a bizarre way. When I start the motor slowly, it makes too much noise and is not running...

Good evening guys. I have converted a Mini petrol car to an electric After converting the car, The car can be driven but it makes very noise. and I never saw this kind of motor. This motor is running in a bizarre way. When I start the motor slowly, it makes too much noise and is not running...

Thank you. something understood but confused. it is not about Hill or Flat road. the problem is. i am repairing ( electric and electronics) EV bikes. but not learned from anyway. just doing it practically. Sellers simply saying. if the motor battery is 72 volt. then the bike is power full. if...

I still don't know these details, even if I ask someone, they won't tell me what is the difference between 1000watts and 2000Watts motors? if the motor watts are higher, than the bike can hold more weight or it can ride long? What is the advantage of increasing the voltage of the motor...

i am trying to get some help from them since last August. so far no any reply from them.

this is what i found inside the pcb. but still no idea where witch one is the ignition start wires and speed control wires.

Dear all, I have the following Controllers around 35 pcs but so far I don't know most of the connections on them. even though I have tried to contact the manufacturer for around one month they don't even reply. even I cannot find any details about this controller on the net. this controller has...

@ amberwolf Thank you very much for your clear reply. Regards.

Hi Thank you very much to everyone who replied. and thank you harrisonpatm for tell me how to calculate it. now every one is saying divide the battery amperage by the charger amperage to get the charging time. but in real tis timing is totally different. i don't know where is mistake on battery...

Dear friends, I have a small question about battery charging. this question I have a long time on my mind. I wish to know how to calculate any battery charging time (How long need to charge? what kind of charger/ how many amperes should be on the charger) examples let's say I have 60V/28Ah...

Guys, today I got an electric bike to repair. The customer told me that his bike was fitted with a USED Mitsubishi outlander batteries. It worked well. But now he can ride only 10-15KM. Once I opened the battery pack I found most of the batteries were swollen. And the battery pack is also with...

Hi Thanks for your advice. yes i am experience in Spot welding. our main problem is in our country right now we cannot import any vehicle! and any kind of battery!! So people are try to fix the old stuff and use it. we dont have any other option right now. this is the only reason to repair old...

I am looking for a Auto charging cut-off circuit diagram for Electric bike/scooters. once the battery is fully charged the circuit has to disconnect the charging line This circuit i have to use for below batteries. 48V 12Ah to 20Ah 60V 20Ah to 50Ah battery 72V 20Ah to 50Ah Lead acid/Nicad/...

Hi recently I received 4 battery packs for repair all are the same brand and same Voltage 48V 12Ah. once I open I found some cells were fully not working. and I have replaced and checked the total voltage it shows fully 48V but when I try to charge it with charging LED quickly become red to...

1 Yes. Image attached. but I don’t know how long time it was used. the person who sold me this Fully Battery Pack me with 4 sets and wires lot of unknown Panasonic components. told me it was imported from Japan from a one-year used car. just disassemble and take out 4 Battery packs. Total 4...