Recommended improvements: https://www.laptopu.ro/2025/01/11/how-to-improve-the-u5-protection-of-the-nlba1-hardware/
Version 2.11 - Build Date 4th October 2024
- added a new USB chip to support Win11, compatible with Win7/8/10/11, PL2303GC
- improved MSP430/U5 data lines protection
- removed L3 to improve XL4005/U3 chip protection
- changed several resistor values
- changed Q1, D1, D4, D10 types
- added new resistors R36, R37 100R in series with SCL and SDA on the U5 side
Version 2.02 - Build Date 3rd April 2023
- fixed power on from USB source issue
- decreased the power consumption of the Output LED (for bq "z" calibration during relaxing)
- added TVS protection diode for the buck converter
- replaced a capacitor with a high-quality low ESW Nichicon capacitor
Great Move
Dear sir could you share the replacements with device boardview with little description? So that every engineer of your device can update the device at his place.
Great Move
Dear sir could you share the replacements with device boardview with little description? So that every engineer of your device can update the device at his place.
Hi @azzido! It's nice to be back on this forum after a long break.
I think @sajid has a good idea here. It would be nice to be able to upgrade our devices ourselves.
However I don't think a schematic or boardview is necessary, and I respect greatly your intellectual property so it wouldn't make sense to share those.
If the circuit board is the same with different components, it would be nice to have a simple picture with markings where the new/replaced components should go.
If it's a new PCB design, I would gladly help with creating a retrofit guide tutorial with pictures and instructions.
Let me know what you think. Have a great day! 
The firmware is the brain of the NLBA1, this is the main reason why we have currently closed the doors to perform updates on the customer side.
No problem
Do you want to update firmware or hardware of your device ?..
@djibattworkshop I was talking about the hardware.
- fixed power on from USB source issue
- decreased the power consumption of the Output LED (for bq "z" calibration during relaxing)
- added TVS protection diode for the buck converter
- replaced a capacitor with a high-quality low ESW Nichicon capacitor
I don't know about the first point, but the other 3 improvements seem pretty straightforward and could be a fun and interesting project for users to upgrade their HW without needing to purchase a new device.
- The TVS protection could prevent some potential failures.
- The low ERS capacitor could improve the device's efficiency. (I'm assuming)
- Unless the Output LED power consumption is software controlled, placing a higher resistor in series with the LED could do the trick.
Cheers!
Carl
- fixed power on from USB source issue
This improvement is very important, the MSP430 can be damaged when it is powered from USB (no DC source connected to NLBA1 first). For this, two resistors R34 and R35 4.7K, 1%, 805 have been added in series on Rx and Tx lines between PL2303 and MSP430 chip
- decreased the power consumption of the Output LED (for bq "z" calibration during relaxing)
R29 Changed the value of R29 from 1k (in the V2.02 sample) to 1.7k to reduce the power consumption during relaxing time
- added TVS protection diode for the buck converter
D10 diode P6SMB24A DO-214AA has been added on the input pin of XL4005
- replaced a capacitor with a high-quality low ESW Nichicon capacitor
C3 capacitor changed for a better quality Low ESR 1uF/10V Genuine Nichicon
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