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# Battery And Monitor

77 Threads found on edaboard.com: Battery And Monitor

## Battery Internat Resistance Without OCV

Hello, I am working on a project that will meausre internal resistance of a lead acid battery. I know DC Load Test but my problem starts with Open Circuit Voltage(OCV). My batteries always connected to power source and i cannot switch my batteries and power source. MY CONNECTION : (-)-----POWER SOURCE--------(+) (-)-----LOAD (...)

## Need changes in this Battery monitor circuit

The battery monitor circuit shown in diagram works with a volatge difference of 2V. i.e At 27 V all led glows. At 25 V led 1 gets off 23 V led 2 gets off only led 1 remains off I want to change the voltage difference from 2V to 1V i.e at 27 V all led ON , At 26V led 1 gets off, At 25 led 2 gets off and so on. What value in re

## How to monitor the battery voltage ?

Observations: 1. D6 probably isn't needed, if the intention is to lift the output voltage of the L200 by 0.6V, I would do it by adjusting RV1 instead. 2. I doubt you need D10 and D11, one or the other should suffice. The voltage to the solenoid isn't critical. 3. You need a capacitor from the input of U3 to ground for stability. 4. D2 (Green LED)

## Li Ion Battery Voltage Detection

A voltage divider and any other load will kill a Lithium rechargeable battery if it is not disconnected when its voltage drops below about 3.2V per cell.

## MPPT and control battery

Hello , I have a project to realize a MPPT controller . The materials : - solar panel : 16V = Vppm CIPP = 0.6A -battery 12V 7Ah Question: - How associated algorithm P & O and battery control ? -Is That Vref = Vpv ? - can you give an example of algorithm P & O + battery charge control ? Bye

## LCD is BLANK if the ADC voltage is LOWER than 5V

Hello guys..need a little help here.. I construct a project for solar lighting using PIC16F877A, it will simply monitor battery and solar voltage via ADC and switch on/off load and charge a battery. Now ADC was set to 5V, now my problem is if the battery or solar voltage (...)

## battery indicator for 3.7v

i have the circuit built for a 3.7v dc monitor and i would like to adjust the values to read between 3.0V and 4.2V. i can not figure out for the life of me what the resistor values would be for the upper and lower limit. i know it's got to be simple. here is my original schematic.. its works great.... but only the (...)

## monitor each Cell voltage in series/parallel battery

Hi, I have this battery and i want to monitor each cell Voltage , but how i can monitor each cell Voltage in parallel you .

## Lion 3.7 V battery charger

Hi, I wanna add battery for internal rtc and when power get off, device will run until battery charge off. So I have to add chargable lion battery in schematic. Anyone can help to adding battery and charging part. I use pic18f66j65 microcontroller. Thanks you

## looking for DC battery charging circuit

hi ! i want to use a rechargeable 9v DC battery in my project, how can i build a charging circuit for it so i can charge it with an external adapter n also be able to use it when adapter is plugged? thanks

## PIC24 A/D and BQ24725A battery charger

Hi, I am designing a device that will have automatic switch to battery when primary power source is removed also charging battery when primary power is present. In my design, I will be using PIC24 and BQ24725A as battery charger controller. For the charger I will use proposed schematic from datasheet. I would like to (...)

## Li-Ion battery charger voltage monitor. MOSFET advise?

Hi, friends. I need advise. I want to know if I'm missing something in my project. It will be a Li-Ion charger for four cells separately, controlled from 4x LTC4054-4.2V. I have doubts about measuring battery voltage while charging. Here is the simple schematic. Don't mind atmega connections, it's just an example. If needed I'll post the whole cha

Pls I need a circuit that works like the battery level indicator but this time I want to use it to know the level of load connected to my inverter Thanks

## 2 AA battery questions

Hey! I have two questions about AA battery's 1) I want to build a circuit that charges 5 AA battery's in series with a zener diode, what voltage should i use and is there a way to make a led turn on when fully charged? 2) When charging these battery's, how much current are they gonna draw and how (...)

## Can someone suggest a 1.5V rechargeable battery tester circuit for me?

Prefer use led to show the battery volume.. or something like empty, half, full LED indicator or use the LM3914

## Help on this op-amp circuit

I have this circuit (battery ampere hour monitor)and have a basic idea of how it works but would like to understand it a bit better. The principle of the circuit is that it's a bidirectional current flow monitor a 0-60mv signal comes in through X1 from 60amp shunt and it gets fed (...)

## monitoring 24 volt battery using pic microcontroller

i am thinking of using ltc3115-1 dc/dc converter and connect with pic16f877a and using pwm to monitor the battery voltage.... this just my conceptis it possible or not Wow, maybe you should put some vacuum tubes and a bicycle pump in there, too. Why don't you just use two resistors?

## 48v battery monitor the cutoff voltage 42v

48v battery monitor the cutoff voltage 42v(base on the lowest discharge of 1.75v per cell).If possible include cct diagram thanks

## Wish to monitor battery voltage during charging over 24 hours

Which software packages are available for me to do the above? I only know of Labview...but the cheapest version costs ?795. Are there any cheaper data acquisition softwares?

## LTC6803 Battery Management System (BMS)

I know this sounds ridiculous but i would like to ask about the Linear technology BMS LTC 6803-1 circuit board I would like to ask that while connecting the battery with the wires to monitor the voltages and temperature of the cells, how do i go about discharging the cells. As there is an option in the software to discharge the cells, (...)