All Questions
Tagged with power-consumption batteries
27
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How to work out consumption of a battery after powering an electric motor?
Hi friends I'm trying to work out how many kWh of energy capacity are drained from a high voltage battery after powering an electric motor for a period of time in a little study on an electric vehicle....
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How do I calculate the required batteries and solar panels for my needs?
I am building my camper and want to know how to calculate exactly what batteries I need, and what solar panels to meet my needs.
Here is my list of the main and most powerful devices that I will use, ...
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What is the meaning of average current? How is it used in calculating battery life?
The average current is the total current consumption divided by the measured duration.
As per the above image, there are two average currents.
Case 1: 866.82 uA over 2 mins of windows (complete cycle)...
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Durability of a battery
I have a device that consumes 10W and I have a 12V x 4.5Ah = 54Wh lead-acid battery, does that mean that my device can work continuously for 5.4 hours?
Does the same concept apply to lithium batteries?...
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2
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Camera + Accessories and power
I work with movie cameras. Unlike normal cameras, they have many types of batteries, sizes, etc that can power them. Many attachments (wireless video transmitters, follow focus systems, monitors, etc) ...
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Calculating battery life considering the capacity drops depending on load current (2 x 4 AA-packs in parallel)
This is a very recurrent question, about calculating the battery life given certain circuit current usage.
This example will be similiar to this one in terms of the battery used and the consideration ...
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2
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257
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3.7V to 7.5V step up circuit
I need a circuit which can step up the voltage from my 3.7V Li Ion battery to 7.5V.
The current requirements are pretty small (up to 50mA max), but I have a latching solenoid which requires a short 7....
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210
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Electrical water fountain - what is its power consumption? [closed]
Above is the image of the electrical water fountain given to me by my ex-employer, on account of my birthday. The single LED changes its colour (Red, Green, Blue) every two seconds. It is operated by ...
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453
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Calculate lifespan of BLE ESP-32 module
I have purchased an ESP-32 BLE module. I have programmed it to turn on to broadcast a Bluetooth text to my phone and then enter the deep sleep mode. Then continue this loop.
When the Bluetooth text ...
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What is the peak current for CR, LIR and AA batteries?
I'm working on a project that requires low energy consumption. In standby mode, it will consume about 11uA. However, when it starts working (it will transmit data in RF), the current goes up to 121mA. ...
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Powering refrigerator using solar inverter
I have got a 3 kVA (2400 watt) solar hybrid inverter (pure sine wave) which is connected to a 1280 watt PV array and 2 x 12 volt 150 Ah batteries. It is supposed to switch to utility mode if the ...
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Battery capacity calculation/method [closed]
While calculating battery power capacity requirement for a circuit consisting of multiple loads having different power consumption, how should one proceed to avoid any error? How it is done in ...
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1
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239
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Battery Run-time/capacity calculation
Problem is to find the difference in run-time between:
a. Using 12V 10Ah battery vs 24V 5Ah battery.
PS: Load is rated at 12VDC and 24V to 12V step-down conversion is available.
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3
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Battery Life Calculation, Sleeping and Wake modes
I have a circuit that consumes 1.6μΑ during sleep mode and 40mA during awake mode. The awake period lasts for 3 seconds and the circuit is on awake mode every 30 minutes. The circuit is powered by ...
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Batteries have spare capacity when unused for minutes after running out? [duplicate]
I tested it with NiZN batteries:
After they ran out of power, I measured their voltage. 0.9V.
I waited 15 minutes, measured again without charging, and it was at 1.5V.
I continued operating a CD ...
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