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  1. P

    Strange Motor

    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...
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    Voltage and watts of Motor

    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...
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    Battery Charging Timing.

    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...
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    Swallowed Lithium Batteries

    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...
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    Auto-Cut charging circuit

    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/...
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    48V 12Ah battery RED/GREEN light blinking

    I am doing Electric bike repair and we are fixing GEL or lead acid batteries to the Electric bikes. recently our customers are interested in Lithium-ion batteries and many customers bring Lithium-ion battery packs (48V 20Ah, 36V 12Ah) to repair if any battery becomes fat or any acid leak I can...
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    HONDA FIT GP5 Batteries.

    HI. I have Honda FIT GP5 battery pack. one set having 4 modules. each module have 12 cells 48V) My question is can i build a 60V battery pack( 16 cells with a BMS) with batteries and run a electric scooter. This battery is enough o run a Electric scooter?i have idea to build 60V pack with...
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    Help me to identify this Controller

    Hi I have purchased some Controllers from Aliexpress. but the supplier does not give me any pinout or wiring description. and he not answering too. I can know Motor wires Hall sensor wires only rest of all connections are combined to two connectors. Please help me to find out the wirings.
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    Lithium iron Battery connection

    Dear all, I have a small question. my bike having 12V 12ah 5 gel batteries, all are expired now. and I have built 5 12V 30Ah battery packs with 18050 batteries. each pack is 12V and each pack have separate BMS too. i can charge it with12V charger each battery. Now can I series all batteries...
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