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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Arduino Every Nano with 3.7V Li-Po - Reading voltage
I have Arduino Every Nano and 3.7V Li-Po battery (Akyga LP903759). I want to read the current voltage of a battery using analog pin. If I use a 50 kOhm and 200 kOhm resistor (in voltage divider) I'll ...
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bq24171 battery charger does not charge
I want to make a 2S LiPo battery charger. I used the bq24171 chip from TI and followed the datasheet. All the conditions to enable charging seem to be ok but there is no actual charging (no output ...
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How to charge LiPo battery using a wind generator?
For a home robotics project I want to fly a kite using a computer. For this to happen I need an electro motor up in the air (attached to the kite) which obviously needs a battery up there as well. ...
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TP4056 with load sharing
Does the TP406 with protection also needs a load sharing circuit?
I got the following schematic. But I saw this post on load sharing. Can I add that to this design too? I could not really find a good ...
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Does Sony NP-F type (generic) batteries have any over discharge protection circuitry inside?
I use these Sony NP-F550 or NP-F570 Li-PO generic batteries (8.4V) for video light and for powering my DIY projects.
I've read you shouldn't discharge a 8.4V Li-ion (it's a double 3.7V cell inside the ...
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LiPo battery sparks when used with DC step up convertor
I'm using a LiPo battery 700mAh 3.7V with MT3608 DC-DC step up boost converter module 2V-24V 2A.
The problem is when I connect these to anything or even the wires just touch each other they produce a ...
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Battery Management Controller
I designed a wearable with a 3.7V Li-Po battery (381018). Everything worked good at the begining and now after 6 months I realize some circuits are not charging anymore. For what I understood when I ...
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Strange Behaviour of Lipo Battery ESR during charging
I performed three charge tests on a single cell 190mAh Li-Po battery with Keithley Battery Simulator instrument. Charging started at 3V and stopped at 4.20V in all tests.
After completing the three ...
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Why bq76940 cell0 has two capacitors
I'm exploring bq76940 datasheet. I've found such typical scheme for cells connection:
Why VC5-VC4, VC4-VC3, VC3-VC2, VC2-VC1 pairs have only one capacitor and VC1-VC0 pair has two capacitors? What is ...
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Li-po battery balance charging circuit
I work on a solar tracking project and in this project I have to charge my Li-po battery to store power and use this power for supplying the system.
For this problem, I searched for Li-po battery ...
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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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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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Auto power switching between USB and a range of Lipos (1S-3S)
I'm designing a circuit used in a portable device. I want the option of powering the device over USB or from a range of different Lipo batteries (1S-3S).
I want the circuit to auto negotiate between ...
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Identity of SOT23-5 Lipo Battery Monitor IC
Please can anyone help with identification of a sot 23-5 package marked GCLK in a single channel of a rechargeable lipo balance circuit
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Faking a dead LiPo cell with a capacitor
I have several old smart phones and small laptop computers with dead batteries (LiIon, LiPo).
These battery cells charge to max 4.2V.
When I remove the batteries, these devices won't power on anymore, ...
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