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Questions tagged [battery-monitor]

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0 votes
0 answers
21 views

Battery monitoring for voltage current and capacity

I have a 12V 7Ah and 12V 18Ah lithium-ion battery at home. I want to be able to monitor the battery's voltage, current, and capacity. I came across this IC from TI, BQ26621, however I then noticed ...
JoeyB's user avatar
  • 2,391
0 votes
0 answers
89 views

ADS1115 ADC + ESP32 4S battery monitor

I have a project to monitor a 4S battery pack with an ESP32 using an ADS1115 ADC. I have previously tested the circuit witch has been corrected by someone on Stack Exchange. The circuit: I have 2 ...
Khales Naim's user avatar
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0 answers
69 views

Charging IC for a 1S or 3S Li-ion battery

I have quite specific problem; I'm designing a PCB for my robot, that is used the main board for controlling motors, gathering data from sensors, etc. The whole PCB will be designed as a Raspberry Pi ...
LosVocelos's user avatar
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0 answers
22 views

How to monitor capacity of 18V Li-Ion battery pack? [duplicate]

I have been learning more about how battery packs work and are made. I have been playing around with this one: https://www.batteryspace.com/li-ion-18650-battery-18v-2900-mah-52wh-7a-rate-5s-s-...
joe's user avatar
  • 183
1 vote
2 answers
81 views

Problems trying to monitor two 3S Li-ion batteries from an Arduino, while powering that Arduino

So what I'm doing might be actually a little haywire, but here goes: I'm using an Arduino to power a series of relays that control some 24 volt valves. The power source is two Milwaukee M12 batteries ...
Brett James's user avatar
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0 answers
137 views

Use and monitor a LiFePO4 battery with a microcontroller

I am planning to build a small robot using a Raspberry Pi Pico microcontroller and DC motors. I am considering to use a single cell LiFePO4 battery. After some research, it looks like many use a ...
Jonas's user avatar
  • 237
0 votes
1 answer
30 views

RTC UPS power cycle on low battery

My RTC UPS switches on and off the whole time when the battery is low. I think it could be with the voltage monitor circuit as with the led indicator on the ups it shows the ups's battery voltage is ...
Lancerio's user avatar
0 votes
1 answer
208 views

Constant Current/Constant Voltage Cycling of Li-Ion Battery w/ Arduino

I would like to build a basic cycling controller for charging and discharging small Li-ion coin cells, and plot the voltage curve. As recommended for LiFePO4, there is a Constant Current Charge and ...
CuriousPaul's user avatar
1 vote
3 answers
242 views

Efficient Voltage Divider Battery Monitoring for 42V system

I'm designing a system that is powered from a 10S2P LiPo battery pack and I was looking for an efficient way to monitor the battery level. My microcontroller is 5V logic level, and I understand I can ...
Barnabas Nomo's user avatar
4 votes
3 answers
652 views

Is there an alternative economical low-voltage reference to a single cell?

This is a simple Li-ion battery monitor circuit I designed around a low-voltage LMV331 comparator, which can operate down to about 2.7 V. I think it's best for a comparator to work with median ...
Randy's user avatar
  • 3,255