Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [discharging]

16 questions
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What is a safe max. discharge current for a tubular lead-acid battery?

I have 4 tubular C20 batteries, 225 Ah each (2 series-parallel-2 series) for a residential solar system. I suppose the below is true: C20 gives us the recommended current to obtain the advertised cycle life (900 cycles at 80% DoD) using the below…
Jean
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Why does a capacitor discharge in an Esaki oscillator?

I’m very new to assembling circuits. I don’t understand why the capacitor in an Esaki oscillator discharges, causing the LED to flash. From my understanding of capacitors (I’m sure there is something I’m missing), the capacitor should charge up to…
Ethan Coyle
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Can you use just a battery monitor for charging? (instead of a charging specific ic as well)

Would a fuel gauge IC that also monitors voltage and temperature be enough for monitoring a NiMH battery during charging and discharging? Charging ICs monitor just voltage and temperature so I think using a fuel gauge IC that sends data to the main…
Matthew3302
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Understanding power bank discharge circuit

I am trying to understand the charging and discharging procedure of a lithium ion cell. Eventually I would like to be able to build my own power bank, I understand that there are existing power bank chips to do this job but I would like to build…
ZenerX
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Synchronization of two RLC circuits

simulate this circuit – Schematic created using CircuitLab Suppose x amperes passes through the resistor R in circuit 1. Now if both switches in circuit 2 are turned on in synchronized manner, will the current flowing through resistor R be 2x now…
Muhammad Muzammil Nawaz
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I want to determine the rate of voltage drop of a Lithium-ion battery as it's being discharged at a constant load

We are going to assume the battery pack has a linear charge / discharge curve. There are 4320 cells in the battery. The battery consists of 96 blocks wired in series, with each block comprised of 45 cells in parallel. I'm not concerned with the…
Dave Robinson
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Solution to prevent load from drawing the current from battery while it is charging and draw it from charger instead

I have the following problem: I have a 12.8V LiFePO4 Battery that powers the circuit and a lead acid charger with Intelligent MCU Control of 12V and 1.5 A to charge the battery. When the battery is charging, the load is taking current partly from…
Katja F
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Optimum volt not returning on lead acid battery when load is put on the battery

My Tractor battery (110ah) 12V when I put it on backup check, when the load is put on the battery of discharging 400watt bulb, the battery doesn't reach back to 12v after load, it stays around 11.80 to 11.90. please tell
Ena Gupta
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is it true that when I have a 7Ah battery w/ a C Rating of 10, 7 * 0.10 = 0.7A?

I have a SLA battery: 12v 7Ah C Rating 10 Is it true to say that when I use a charger, the charger needs to be less than half of 7Ah * 0.10? My charger is rated for 750mA for 12v batteries. So, I have 0.75A at 12v for charging. That is way under…
De Funct
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Lithium iron battery bank bleed circuit

Can anyone explain to me what i did wrong with this circuit, I guess it is down to my lack on understanding of how transistors and MOSFETs work. Up the right hand side is headers GND, S1, S2, S3, through to S14 that connect to a lithium iron battery…
Jay Dee
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Power supply as battery in tablet

The battery puffed up on a Windows tablet I have that installed ubuntu server on. Easy to take the back off then because the battery lift it up. It would not work any more so I unplug the battery and cut off the wire that goes to the board in…
Raymond Day
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How to find capacity of a battery in terms of mAh or Ah?

I know that this question has been asked a number of times and even received negative feedback but I want to find a shortcut method of determining capacity of a battery in terms of mAh instead of using that Q = It method which may take upto several…
Asmat Ali
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Powerbank and Lithium-ion charging/discharging module stop working under a current supplied to the load

I have made some tests with a HX160S3 26800mAh power bank and a 134N3P charging/discharging/protection/DC/DCconverter module and I have made kind of the same observation: when they are in discharging mode (supplying power to a load), they stop…
NinjaGreg
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Battery Charging and Discharging rate

I did some calculations for hybrid renewable energy system and I calculated the energy from PV and Wind. Then I modeled a battery for both the PV and the Wind energy systems. I found that energy production is 720 kWh less than the electrical load,…
Haseeb Rasool
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How does power affect the TP4056 module?

I have 4 questions in particular: TP4056 input has been given as 5V and 1A. How does TP4056 handle the charging process it more than 5W is provided to the module? Will the battery stop charging or will it damage the cell? Also how much more than 5w…
Tushar Dubey
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