Questions tagged [lipo]
Questions regarding Li-Po batteries (Lithium-ion Polymer, Polymer Lithium Ion or more commonly known as Lithium Polymer), including proper charging and usage.
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Li-po battery: determining compatibility for replacement battery and charger
I want to find substitute batteries for a pair of heated boots (heating element in the boot sole) with larger battery capacity for longer operating time. The boots came with two 8 V, 2600 mAh ...
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Voltage drop in Li-po charging circuit based on MCP73871T
I created a schematic including a Li-po charging IC MCP73871T and a boost converter powered by USB 5 V. The switch can alternate the boost voltage output between 9 and 12 V.
Problem:
12 V state:
The ...
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Can I use a single battery charging ic to charge two batteries in parallel?
I am making a wearable device so for better space distribution I would like to use two smaller batteries instead of a big one. I've been using TinyCircuits's ASR00007 (290mA, lipo) battery which has a ...
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Issues with AP9101C Lipo protection IC and the auto-wakeup feature
I'm developing a pcb for a product powered by a single-cell li-ion battery. Since I couldn't find an appropriate battery with a built in protection ic, I decided to add one to my design. After ...
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High voltage at the Schottky's anode terminal (Hobby Li-Po charger circuit)
I'm pretty new at hardware side of things and trying to teach myself circuit and PCB design just as a hobby, so. bear with me if I'm annoyingly noob for you.
As a relatively simple first task, I ...
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LiPo Battery management circuits
I am new to creating PCB designs for specific projects and I essentially need someone to help me verify if what I have done is correct. The power source is a USB-C connection supplying 5V to the ...
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Charging LiPo Battery with Solar Panel and Water Turbine Generator
I'm looking for a way to be able to connect a Solar Panel (5.5 V / 540 mA) and a Water turbine generator (3.3 V / 120 mA) together to charge a LiPo Battery of 4,000 mAh.
While using the solar panel ...
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Can you power 2 voltage rails simultaneously using a buck-boost converter?
I am designing a custom PCB and want to power 2 rails: a 3.3V and 5V rail, with a single 250mAh LiPo battery (3.7V) and need the 5V rail to have as stable a voltage as possible.
I understand that a ...
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Use 2s LiPo Battery as Battery Cell for Microcontroller
Is there a convenient way to use a large 2s LiPo battery (such as this one) as a power source for a microcontroller and LED strip? Specifically I'm looking for the ability to seamlessly switch between ...
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Power bank or fire hazard?
I do have a bunch of 18650 LiPo cells, salvaged from various sources. Now, I happened to come across a variety of power bank cases on Amazon which mostly look like this:
Even a cursory look tells me ...
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Inquiry Regarding NTC Selection and Placement for ST L6924D LiPo Battery Charger
I am planning to create a lithium-polymer (LiPo) battery charger using the ST L6924D charging IC. Could you kindly recommend an appropriate NTC (Negative Temperature Coefficient) for controlling ...
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MCU not powering off completely
I implemented this on/off circuit that I use with a LiPo battery and a HT7833 voltage regulator. Since my MCU (ESP8266) can only handle 3.3v, I added a voltage divider for the MCU sense pin, just like ...
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2-S or 3-S USB type-c PD LiPo battery charger
I am trying to implement a 2-S or 3-S USB type-c Power Delivery (USB-C PD) battery charger.
I am using this video of reference which uses a 16pin female usb type-c connector (part: TYPE-C-31-M-12) and ...
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Replacing lipo battery with a power supply
For a project i'd like to power a brushless motor that works with esc and lipos but i need to replace the lipos with a power supply so the motor can run longer, i need 50v and need to be able to pull ...
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Is it possible to use BQ25629 as both a lipo battery charger and a stable output regulator?
I am a bit confused looking at the datasheet for the TI BQ25629 with regards to the SYS output voltage. Essentially, I have a 3.7 nominal voltage 290 mAh lipo battery that needs to provide around 100 ...
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