Good change for current controller

[Davidcroatia]

Hello, i have this controller https://nexun.pl/czesci-do-e-bike/kt36-48svprc-36-48v-30a-sinus and a qs 1000w motor, i have also kt's lcd screen. I heard this is not a real 1500w controller as it has little amp, and he can do it in short bursts. Seller told me to set it up like this, that is to set it up https://ibb.co/FYKLTFx , as im currently using upps hialong case 42v 40amp 24.5 ah case i get appx 50kilometers of range and a 48km /h . Im considering buying 52v 20ah 50A bms battery , what would be a better controller that could give me more speed, or be more reliable from kts lineup ? This one ? HRK 157.73 10%OFF | 36V 48V 1500W ebike Bicycle brushless Controller Sine Wave 45a Regenerative Electric Bike Wave Controller Kit Anti-theft Quiet
https://a.aliexpress.com/_dWvTqLO please give me your toughts or input...

 

[Balmorhea]

The 45A controller will improve acceleration and climbing, and use up your battery faster. Top speed is probably the same as your 30A controller. To increase speed, you have to use higher battery voltage (and a controller that can withstand higher voltage).

 

[John in CR]

I believe that running a 45A controller from a 50A limited BMS is cutting it too close. In the best case, it's likely to occasionally trip the BMS cutoff for over-current, and imagine that happening at the worst time...accelerating across and intersection with oncoming traffic. In the worst case on a hot day going up a steep hill where higher current is drawn more continuously, the BMS gets heat stressed by the current and ambient temps and blows.

I don't run any of my ebike components near their limits in the interest of dependability. I run 250A through motors that have been proven to handle 400A and the battery packs will easily handle 600-800A. My controllers are rated to handle over 300A, but I draw only 250A peak and that occurs only a few seconds at a time. They're rated for 95V max, but I limit pack voltage to 87V fresh off the charger.

 

[Davidcroatia]

How much the bms is then in 60v or in 72v? How much is amp controller? I mean can you from the head say mesaurments ? Example 48v 40amp will give you 48km an hour maximum

 

[Davidcroatia]

Up the subject, what is the greatest sinusoidsl controller for leaf and qs motor, can go from 1500w to 3000w , can use from 48v ro 72v with screen lcd colour

 

[E-HP]

Up the subject, what is the greatest sinusoidsl controller for leaf and qs motor, can go from 1500w to 3000w , can use from 48v ro 72v with screen lcd colour

and in Europe, correct?
https://endless-sphere.com/forums/viewtopic.php?f=3&t=107282&p=1578705#p1578705

 

[Davidcroatia]

Up the subject, what is the greatest sinusoidsl controller for leaf and qs motor, can go from 1500w to 3000w , can use from 48v ro 72v with screen lcd colour

and in Europe, correct?
https://endless-sphere.com/forums/viewtopic.php?f=3&t=107282&p=1578705#p1578705

Yes but phase runner i didnt see in europe, i saw only one and was 470 euros that is too much for a controller, i tought its made in canada or usa, let me formulate my question, what is the best sinusoidal controller from 48v to 72v for qs motor and leaf motor with lcd in colour on aliexpress or somwthing wsterproof up to 200 euros

 

[Davidcroatia]

What is not good in this controller ? Is bluetooth a good option? HRK 79.14 23%OFF | Ebike 48V 1500W 2000W Sine Wave or Dual mode 18Mosfet Bluetooth controller electric bike controller and KT LCD3 LCD8 LED880
https://a.aliexpress.com/_mNuahsB

 

[Davidcroatia]

Is this one better ? HRK 496.99 | 48V 60A Brushless DC Motor Ebike Controller,60A controller +KT-LCD8H LCD3 LCD8S LED900 Display One Set,for 2000W-3000W Kit
https://a.aliexpress.com/_mqiDMML i mean why some have like 35amp and some 60amp? But are 48v