Huawei 4875 Onboard Charger
A guide to converting a Huawei 4875 into an efficient onboard charging solution for your PEV
Page still Work in Progress!
This proejct is still ongoing and not complete! feel free to come back every so often to check for updates :)
When I'm doing long distance riding with either of my PEV's, either the onyx or my EUC (master pro), I found that carrying the charger added unnecessary weight. A 4-pound charger might not seem like much, but every ounce counts when you're riding. This led me to develop an elegant onboard charging solution.
Charger Overview
Variable Huawei 4875 Charger capable of delivering up to 50 amps
The Powerhouse
This isn't just a normal charger. The 4875 is a variable charger capable of delivering up to 50 amps.
- 01Auto Switching Between 110V and 220V AC and DC
- 02Adjustable voltage and amperage settings
- 03Bluetooth connectivity
- 04Built-in display screen
- 05Power output up to 4.5kW
- 06Voltage range: 60-100V or 120-210V
- 07Charger size: 275mm 105mm 45mm
Design Process
Planned mounting location behind the center box
Design Requirements
- 01Sleek Integration with the bike
- 02Quick-release capability
- 03Structural integrity
- 04Optimal thermal management
Design Timeline
V1 Jan 28, 2025
This was the extremely basic design for the shell, It protected everything, while having a good amount of empty space on the top and bottom surfaces. However, this version lacked a proper mounting system, and we needed the sides to also be hollow to allow more airflow.
V2 Jan 29, 2025
This version was mainly built to test the locking mechnism. In this version we plan on using velcro belts to keep it in place, but we were still developing the locking mechanism.
Still missing a "slide lock", and ideally want to reduce the size of belt slots. This would let us maximize the amount of area we can use to allow heatsyncs to work as intended
V2 Fitment Test
This was just a small portion of the charger case so we could test how well the charger fits within the case. and as seen, its extremely snug. Perfect for the final version.
V3 Feb 2, 2025
This version was actually a huge change. we realized the hotspot of the charger was actually on the side, so we needed to clear the sides to allow airflow
Corrected and added the latch system for the top cap too
V3.1 Feb 2, 2025
Just a small change, added belt loops to all corners on both sides to make sure it stays still while riding
Sidewall Designs
V3.2 Feb 2, 2025
This was our first side wall design, and It was very nice actually, but we worried for the security for the charger, and decided that we needed more wrapping around even, at the sacrifice of some airflow.
V3.3 Feb 2, 2025
After doign some research regarding PETG, we realized that additional support was required, so we decided to go with the X design, and it was a great choice, Being stylish while also securing the charger
Sidewall Designs End
V4 Feb 3, 2025
This is our final locking mechnism for the shell, with a 0.2mm Tolerance, it not only locks in. but we also have a 3 point latch system, and hopfully that'll keep the charger in.
Interested in getting a custom charger setup for your PEV?
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