ULtra Compact 1800W charger + Eltek programming

[rdsantos]

Spike,
I have many 48/3000 HE supplies, part number 241119.105MC Revision:1 SW:1.01/2.02 on the label.
They all power-on with the fan speed at what I would consider full speed. I just started working on them a few days ago.
have you found any additional information?
Bob H

I have the same part number, 241119.105.

The fan noise is very loud.

Is there any control information to set it to automatic or temperature control?

 

[rdsantos]

Is there a control
to set the FAN to Auto/FULL?

I have a 48V/3000W unit, and they all have fans on full, and the noise is very loud.

 

[steveo]

Hello Everyone,

Its been quite a while since i played with ebikes, but i’ve been tinkering over last few months time and energy permitting

I finally succeeded to program my FP2 ive had for several years using esp32. I was considering to build a pcb for the hardware and enclosure and produce a batch for anyone interested. Seems like the leonardo board is no longer available and other kits some vendors here that have been put together no longer exist. Below i’ve listed the features and functions my code version is capable of. Also the hardware I used. Will look to implement autologin in future version.

Hardware

• ESP32 microcontroller (control, UI, storage, future Wi-Fi/BLE)
• MCP2515 CAN controller + CAN transceiver (CAN bus interface)
• 2.42” 128×64 I²C OLED (SSD1306) (status display)
• Single momentary push button (user input)

Features & Functions

• Real-time CAN monitoring of DC voltage, current, power, AC input voltage, temperature estimate, and SOC
• OLED dashboard with centered layout and charging status indicator ( blinking in CC mode)
• Single-button interface to adjust DC voltage and current
• User-settable DC voltage (43.5–57.5 V) and current with AC-aware current limiting
• Automatic CC/CV behavior with visual feedback
• Persistent memory — remembers last voltage/current settings after power loss

-Steveo

 

[Almayatebajo]

Hello.
Is the code available?
Regards.

Hello Everyone,

Its been quite a while since i played with ebikes, but i’ve been tinkering over last few months time and energy permitting

I finally succeeded to program my FP2 ive had for several years using esp32. I was considering to build a pcb for the hardware and enclosure and produce a batch for anyone interested. Seems like the leonardo board is no longer available and other kits some vendors here that have been put together no longer exist. Below i’ve listed the features and functions my code version is capable of. Also the hardware I used. Will look to implement autologin in future version.

Hardware

• ESP32 microcontroller (control, UI, storage, future Wi-Fi/BLE)
• MCP2515 CAN controller + CAN transceiver (CAN bus interface)
• 2.42” 128×64 I²C OLED (SSD1306) (status display)
• Single momentary push button (user input)

Features & Functions

• Real-time CAN monitoring of DC voltage, current, power, AC input voltage, temperature estimate, and SOC
• OLED dashboard with centered layout and charging status indicator ( blinking in CC mode)
• Single-button interface to adjust DC voltage and current
• User-settable DC voltage (43.5–57.5 V) and current with AC-aware current limiting
• Automatic CC/CV behavior with visual feedback
• Persistent memory — remembers last voltage/current settings after power loss

-Steveo

Hello.
Is the code available?
Regards.

 

[Figo]

can you help to identify the damage transistor

 

[dominik h]

Picture?

 

[lnanek]

Neat cost savings there with the PSU + Arduino/ESP32 + CANBus adapter + display. I got a bunch of 56V 10A rack power supplies from the trash recently. I really wanted this 12A $97 bench power supply faceplate to charge my 58.8V max battery with them:

https://a.aliexpress.com/_m0dhgiT

But couldn't justify the price over this 10A $21 MPPT boost charger:

https://a.aliexpress.com/_mr2BKDZ

And for 30A it would have taken something even more expensive like this $121 buck only faceplate and dropping in a couple spare 5V 30A supplies I have in series:

https://a.aliexpress.com/_mK4sjM3

So this hack is probably the equivalent of the $121 functionality for the cost of the $21 one.