Nice video, really detailed and well put together. I have a question for you: What did you do to your firmware to handle the increase in voltage when wiring the extra battery in series with the stock battery? I tried to make my own battery like you have done, but when I did it triggered error code 20 abnormal battery voltage, so I made a firmware that would ignore this. after that I tested it with the wheels in the air and it would do 54km/t but when I started riding it would just shut off at 20km/t every time, I later found out that my BMS was damaged so I changed it and it is now okay with the stock battery, but now i'm scared of trying again as it is such a pain to change the BMS. What did you do to your firmware?
Hi...thank you first! I really appreciate! 🙂 So... there are many possibilities: FIrst.. I think you connected wrong the series connection that killed you bms...that's why you had *error 20 * Now you have it changed... Wich tipe of battery did you have, that allow you ride 54km/h on free wheels? How many volt's ? I can give you a link with my firmware. And I tell you... someone tried 72v on a German G30D model ( and G30D controllers are stronger that G30P )...it work well for a while but than not anymore because our Controller's can handle up to 63v only so 12v external is the maximum voltage that I recommend. Don.t go over 55v ( I mean 42v internal + 12.6v external) I will link you a firmware and do the connections right ✅ 🙂 you will now if you connected wrong because the scooter won't show you anymore the BMS! Not even the percentage of the battery!
@@G30MaxForce maybe you misunderstood me. I mean there is internal voltage divider in controller that regulates 42v => 3.3v or 5v (I don't know for sure). That voltage is supplied to MCU analog input, that measures it and utilizes for displaying on the screen etc. So increase of input voltage will cause 30% overload on MCU input when fully charged. That can potentially fry the input.
As far as I understood, it's based on STM32F103CB, witch has 3.3v logic, and max ADC voltage is 3.6v, witch is less than 10% overload of 3.3v. So leaving it without tuning voltage divider can be dangerous.
I love this new upgrade :D
Hi, I did as you, I highly recommend!!!!!😁😁 Just tell me if you can charge two batteries from the original charger or how to charge a 12v battery?
Hi,
For the 12v battery you will need an external charger 12.5v. Disconnect them while charging! 😀
Nice video, really detailed and well put together. I have a question for you: What did you do to your firmware to handle the increase in voltage when wiring the extra battery in series with the stock battery?
I tried to make my own battery like you have done, but when I did it triggered error code 20 abnormal battery voltage, so I made a firmware that would ignore this.
after that I tested it with the wheels in the air and it would do 54km/t but when I started riding it would just shut off at 20km/t every time, I later found out that my BMS was damaged so I changed it and it is now okay with the stock battery, but now i'm scared of trying again as it is such a pain to change the BMS.
What did you do to your firmware?
Hi...thank you first! I really appreciate! 🙂
So... there are many possibilities:
FIrst..
I think you connected wrong the series connection that killed you bms...that's why you had *error 20 *
Now you have it changed...
Wich tipe of battery did you have, that allow you ride 54km/h on free wheels? How many volt's ?
I can give you a link with my firmware.
And I tell you... someone tried 72v on a German G30D model
( and G30D controllers are stronger that G30P )...it work well for a while but than not anymore because our Controller's can handle up to 63v only so 12v external is the maximum voltage that I recommend. Don.t go over 55v
( I mean 42v internal + 12.6v external)
I will link you a firmware and do the connections right ✅ 🙂 you will now if you connected wrong because the scooter won't show you anymore the BMS! Not even the percentage of the battery!
Hey there do you know how to take speed limiter of
Hi....
Without overvolting there is nothing you can do!
If in off position, i can charge external and internal battery at same time correct. Without disconnecting anything?
Exactly, you got it.
Now hit Like and Subscribe! 😄
I won’t to install a external battery on my Ninebot max. the file you create on your video is good for it
Did you replace controller capacitors to higher voltage? I think it's needed. What do you think?
Hello!
The stock controller can handle up to 63v!
Only required to do so, if you plan to go over 63v!
@@G30MaxForce and what about voltage divider for voltmeter, I heard that increased voltage can fry microcontroller's input.
@@Lufton The voltmeter will be fine!
@@G30MaxForce maybe you misunderstood me. I mean there is internal voltage divider in controller that regulates 42v => 3.3v or 5v (I don't know for sure). That voltage is supplied to MCU analog input, that measures it and utilizes for displaying on the screen etc.
So increase of input voltage will cause 30% overload on MCU input when fully charged. That can potentially fry the input.
As far as I understood, it's based on STM32F103CB, witch has 3.3v logic, and max ADC voltage is 3.6v, witch is less than 10% overload of 3.3v. So leaving it without tuning voltage divider can be dangerous.
gen1 or 2 ??
Can a T Connector handle 42V? Voltmeter to External Battery.Have read something about 12-24V.Not sure about that
I don't think it can...
Hi dear only must I change battery then speed to more ؟
Yes 🙂
link the swicthing switch is cool no need to disconnect the other one
Hey, would you be interested in selling your own full kit to me? I’m located in Vancouver Canada
Hello...
Yes, I think I can do that.