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High capacity phone charger

$250-750 CAD

Closed
Posted almost 4 years ago

$250-750 CAD

Paid on delivery
I need a high capacity phone charger, min 100000mah, was hoping to use 18650 batteries. I need designed a battery management system with over/undervolt protection. Only need 2x usb 2.0 output on the system. The battery needs to be removable and charged with a charger externally while the usb portion stays mounted. I was thinking of using a 3s grid of 18650 to get 12.6v with a step down regulator in the non-removable part to generate to 5v required for usb charging. Lastly need a push button battery gauge on the non removable part.
Project ID: 25778290

About the project

8 proposals
Remote project
Active 4 yrs ago

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8 freelancers are bidding on average $400 CAD for this job
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Best PCB Design Expert at your doorstep! Dear Client, I have read and understood your project details thoroughly, and I am super excited to work as they are an exact match with my skillset and experience. With more than 5 Years of experience in PCB Design and Circuit Design in Altium, I can ensure you best quality work and before time delivery. Following is a brief list of expertise that I am carrying: 1. IOT products development 2. Microcontrollers based circuit design – STM32, STM8S etc 3. Smart Products like Smart watch - GSM/GPRS/GPS etc 4. Wireless Products - BLE/WiFi- ESP32/ESP8266/NRF24L01 5. Low Power Battery Products design – Rechargeable and Non chargeable 6. Power Electronics – Buck, Boost, Flyback etc Following are the examples of my projects along with their reviews: https://www.freelancer.com/projects/php/Sensor-modelling-Wordpress-Application/reviews https://www.freelancer.com/projects/electrical-engineering/Project-for-Avi-22378233/reviews https://www.freelancer.com/projects/pcb-layout/Hardware-design-for-small-GPS/reviews Let’s have a quick discussion for 5 mins where I would formulate a plan of action of how we shall take this project to the horizons of success. Regards Pratibha(Nickname -Avi) Quality is never an Accident
$500 CAD in 2 days
5.0 (60 reviews)
7.9
7.9
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The way of doing your project: I have 20 year experience on power electronics. Battery charger have been designed by me. I know all principles of battery charger. I will use current controlled PWM converter for your task. Texas Instruments IC can be used. Topology will be buck. I can provide design files: -schematic -PCB gerber file -BOM My time is 3 day for your project. If you want I can send samples. Any questions you can ask me. I hope you will select me. General message: Dear Sir, Greetings from Turkey. I hope you are good. Let me introduce me. I'm Electronics Enginner who have 19 year experience. My experience is related to power electronics, hardware design, analog design, PCB design and microcontroller coding. My projects summary is attached. Please look them. If you look them you will see that I'm ideal person who can make your project without any problem. Some examples are attached. It shows my ability to make your project. Any questions you can ask me. We can talk details of your project by using SKYPe and Whatsapp. Please give me your SKYPE and mobile phone number. My SKYPE: makinmakin35 I can agree budget which you can pay. Please tell me your expected budget. Please give me your project. I promise that I will give good solution. Please respond to me. I hope you will select me. Have a good time Cheers Metin
$250 CAD in 3 days
4.9 (100 reviews)
7.0
7.0
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Respected Employer! Pleased to see the job posting I have reviewed the details that you provided and have also worked on similar kind of projects. I have a good experience and skills in the Please give me a chance to provide you my good services. I can send you samples as well as some of my previous work. Please you can also checkout my portfolio. https://www.freelancer.com/u/doggar302?page=portfolio&w=f Chat for furtherdetails! Thank u! Respected Employer! Pleased to see the job posting I have reviewed the details that you provided and have also worked on similar kind of projects. I have a good experience and skills in the Electronics Microcontroller Electrical Engineering PCB Layout Circuit Design Please give me a chance to provide you my good services. I can send you samples as well as some of my previous work. Please you can also checkout my portfolio. https://www.freelancer.com/u/doggar302?page=portfolio&w=f Chat for furtherdetails! Thank u!
$500 CAD in 7 days
5.0 (22 reviews)
5.6
5.6
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hello sir. I have just read your job description and your project is really interesting to me. The Items you raised are similar to what I have already done in practice and I think you can do it in a short time if you have a little explanation. I'm an expert having specialization in Electronic Engineering Design. ✔️ Embedded system based on Microcontroller (ATMEGA, AVR, STM8, STM32, MSP430, TMS320, PIC ...) ✔️ A system based on development boards(Arduino, Raspberry PI, Node MCU, Bluechip, Teensy,…) ✔️ Antenna design & Analog circuit/RF communication circuit designing and simulation using Proteus, P-Spice, Tina Pro, ADS, CST, Ansys, HFSS ✔️ Bluetooth, WIFI, zigbee, LoRA ✔️ High-Speed layout using HyperLynx ✔️ PCB layout designing, providing GERBER and BOMs, 3D files using Altium, EAGLE, Kicad, EasyEDA… ✔️ Programming firmware of Microcontroller & C++ ✔️ BMS I think my many design and practical experiences can help you design your project and give you enough satisfaction. I look forward to your response. Best Regards.
$350 CAD in 7 days
5.0 (15 reviews)
4.6
4.6
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I Can & I Want to embody Your project I am the one you are looking for because: -30 years experience in design and manufacture of electronic equipment as well analogue as digital -optimal schematic minimum pcb area minimum self-cost
$500 CAD in 7 days
0.0 (0 reviews)
0.0
0.0

About the client

Flag of CANADA
Edmonton, Canada
0.0
0
Member since May 29, 2020

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