Hello everyone. This is my first post on the forum, I am currently working on a seemingly simple circuit. I think a constant current driver is the solution; after wiring everything up last night the LED was nice and bright and circuit ran great. I decided to charge the Lipo over night, and when...
I have a tp4056 li battery charger and I ordered a 440 mah lipo battery. Is it OK to chare battery with this or will be the current too much for battery? Do I need to modify module?
Hi,
I'm a rising freshman at Case Western University, and I would like to make an an electronic scooter to get around campus before I move in in about two months (mid august 2023).
I already have a lot of the parts I would need for the project, like motors and motor controllers, among other...
My lipo battery is hard-wired into my circuit. The battery itself has a DW01A battery protection IC on it. Here's what I see happen.
* The circuit running on battery power (no USB) runs its voltage down to 2.4 V when the overdischarge protection kicks in. The BAT+ and GND in my schematic at...
I bought some rechargeable Earbuds. Very cheaply made.
I cannot return them because I do not have the receipt. Besides, it's not worth the return.
I plug them in to charge and the charge light on them go from Red for a split second and then stuck on Blue, but..turning them on does nothing. I...
I've designed a circuit around the tp4056 with DW01A and FS8205A included, as well as load sharing capabilities.
beneath circuit is what i use (minus load sharing)
now that i'm sourcing lipo batteries, i see most of them have a protection circuit already build in with the same DW01A and...
Hello,
I am currently re-purposing my old powerbank for a robotics project (BMS and LiPo will be integrated into a 3D printed case).
The Powerbank (CellularLine FreePower Slim 5000) was unused for 7-8 months and while opening It,
I measured the cell voltage, which turned out to be ~0.7 V...
Radio Control Airplane using a 20 cc gas engine with solid state ignition. Hall effect sensor used to trigger the ignition. Ignition has a shielded spark plug.
I will be using 5 servos rated for 8.4 volts. Typically, they run with a 50 Hz signal, but different servos can have up to 400 Hz...
I'm trying to design a passthrough charging system for my rpi4b which requires 5v 3a max. I assume it means the regulator needs to handle 6a output if it handles the lipo charger too.
I drew out a schematic with power transistors for control, but I'm not sure I set it up correctly.
Will this...
Hey, so I am trying to design and build my own battery charger for 4 cell LiPos (including HV-LiPos with 4.35v/cell) but I don't have a lot of experience with circuit design.
I designed this circuit so that it can either supply a constant voltage or constant current to the battery with the...
Hello,
I apologize in advance for any grammatical errors.
I'm working on a crowdfunding project that includes a small 5V motor (drawing 2A max) that needs to be powered by a rechargeable batterie via USB.
Now I'm more into mechanic and such thing must be designed by an well trained...
Hello,
I'm just now getting into creating PCB's as a hobby, and created a little board that simply consists of a BLE module powered by a tiny Lithium polymer battery (40mah). Since the max operating voltage of the module is 3.6V, I also have an LDO that will drop the voltage down to 3.3V...
Hi,
I'm going to get this 4S 7AH lipo battery for an RC project. I need a BMS for it that prevents short circuits and overdischarge. All of the BMSs I can find have a cutoff voltage of 2.5V! This doesn't seem good, as isn't it supposed to cut off at 3V to be safe and maintain its capacity!? So...
Hi,
I am looking to power a attiny85 with a LiPo battery, but I would like to have the ability to charge it through the same board. At the moment I am looking at the TP4056 with the FS312F-G and FS8250. So my question is, can I connect the battery to the attiny85 through the battery charger...
I want to design a power bank control board for a single-cell lipo battery. The IC I have selected is BQ24195 by texas instruments. I think it is perfect for what I need. It comes with charge control, boost, voltage protection, I2C control, and many other features. But I have some doubts about...