Questions tagged [low-battery]
The low-battery tag has no usage guidance.
13
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Ultra low power battery
I am currently in the middle of a project and I am quite unsure of what type of battery and battery charger I should be using. To be honest I have never worked with battery or battery charger yet.
In ...
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500
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Ultra-low power low battery disconnect circuit
I am trying to design a circuit to replicate the behavior of the LTC4071 battery charger/protector IC (see datasheet here). In particular I want to replicate the low battery disconnect function which ...
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What would prevent a new AGM battery from fully charging?
What can prevent a new out-of-the-box AGM battery from fully charging, given that neither age nor sulphation are factors?
Specifically, one of the six cells in my brand new Parts Unlimited battery is ...
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Relay Buzzer Circuit
I'm trying to set up a circuit to protect a battery in a battery box, using some parts I had lying around. Its job is to open the primary relay (load/charging) and sound a buzzer when the supply drops ...
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Modifiying SparkFun Uh-Oh Batt. Indicator - TL431 Regulator Diode Based
I'm trying to modify a simple SparkFun Uh-Oh Battery Level Indicator - KIT - 11087 https://www.sparkfun.com/products/11087
It can handle a maximum voltage of 12 or so volts, above that I believe it ...
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Troubleshooting a Low Voltage Cutoff (LVC) Circuit for Overdraining Prevention
I am attempting to design a Low Voltage Cutoff (LVC) circuit to safeguard against overdraining my 12V rechargeable battery. The objective is to halt circuit power once the battery voltage drops below ...
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MSP430FR4133 Low Battery Voltage Periodic Monitoring
Here is the code I used to configure and monitor my voltage that when it becomes 1.2V, BATTERY_ON symbol on my LCD is ON. The checking of voltage is every 10 seconds. This code below works using ...
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Electric guitar with active electronics and a DIY battery gauge
There is a primitive DIY battery charge monitor which blinks a LED after input voltage drops lower a certain level. Let's call it battery gauge. Also, there is an electric guitar with active ...
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Wake up MCU with radio signal using a battery
Currently I have a project that runs with the chip from Arduino (Atmega328p).
This is what it does:
It wakes up.
Powers the NRF24L01 module. And it configures it to only send one packet
...
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Charger says 5-cell li-ion battery at 17.7 volt OCV dead or deeply discharged, what could the cause be?
I have a lawnmower with two lithium-ion batteries. I charged them after sitting during the winter period. One battery charged happily to 19.15 volt open circuit voltage (OCV), whereas the other had ...
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Is the SkyRC B6 Nano charger suitable for charging single 18650's from 2.4v-2.6v
I have salvaged six 18650's from a laptop we've owned for years. Battery voltage: four of them are ~2.63v, two are ~2.46v
I have a SkyRC B6 Nano charger (https://www.skyrc.com/Charger/B6nano). I've ...
- 101
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VBAT transistor switch is unsymmetrical
Hei,
In relation to my other topic for the VBAT cutoff circuit, I have now gotten my hardware back to measure the functionality.
What I have encountered is that the switch-ON is as planned ~2.3V, ...
- 135
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Embedded device with Hardware issues consisting atmega 328p, RFM96 and ADXL345
I have a device that works on 3V battery (2 D size cells) now I want to debug it so that all the devices work correctly. My device consist of atmega 328p, running on 08 MHz Crystal which gets readings ...
