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Dischardge indicators

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DFRobot Gravity - I2C battery charge level meter

A module designed for reading the Li-Pol 3.7 V battery charge level in real-time. It is also equipped with alarm function when the battery level is low, or when battery power...
Index: DFR-12263
Index: DFR-12263
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Regular price PLN28.37 Price PLN28.37

LC709203F - LiPoly / LiIon Fuel Gauge and Battery Monitor - STEMMA QT / Qwiic - Adafruit 4712

Battery level indicator from Adafruit. It allows to measure the voltage of Li-Pol and Li-Ion batteries. Displays the voltage value and percentage charge of the cell. The...
Index: ADA-18235
Index: ADA-18235
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Regular price PLN27.24 Price PLN27.24

Li-pol 1-8S voltage indicator with P309 buzzer

Voltage indicator for Li-Pol batteries (from 1 to 8 cells) equipped with a low voltage sounder.
Index: MOD-05015
Index: MOD-05015
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Regular price PLN5.28 Price PLN5.28

Battery charge level and sound level indicator - KA2284

The module is based on the KA2284 system. It is used to measure the input signal with the 5 LEDs, which are gradually included depending on the value of the measured voltage....
Index: MOD-07150
Index: MOD-07150
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Regular price PLN7.72 Price PLN7.72

Qwiic Fuel Gauge - MAX17048 - SparkFun SPX-17715

Based on the MAX17048 chip, this module is from SparkFun's SparkX series of experimental products. The Qwiic Fuel Gauge is ideal for monitoring the charge level of single...
Index: SPF-19156
Index: SPF-19156
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Regular price PLN34.72 Price PLN34.72

Grove - LTC2941 - Coulomb Counter 3.3V/5V

A module designed for reading the level of rechargeable single-chamber Li-Pol batteries, from 3.3 V to 5 V in real-time.
Index: SEE-13514
Index: SEE-13514
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Waiting time approx. 10-30 days
Regular price PLN35.77 Price PLN35.77

Variable Load Kit - 15W load measurement set - SparkFun KIT-14449

Kit is a quickly installed board designed to allow the user the current measurement from the power input. The kit can be used, i.a. to check the stability of the power supply...
Index: SPF-11123
Index: SPF-11123
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Waiting time approx. 10-21 days
Regular price PLN137.40 Price PLN137.40

To measure voltage or capacity?

This is the eternal question requires more detailed answer and disprove some myths. If the battery voltage is a fairly good indicator of a full charge or discharge, then a more accurate determination of the current energy, for example, in percentage of the nominal capacity, it is a bit more complicated. Previously used batteries (e.g. lead-acid or Nickel-cadmium) had the characteristics to determine approximately the amount of power remaining based on voltage measurement, however, used today, modern lithium-ion batteries (Li-Ion) and lithium polymer (Li-Po) behave quite differently- this applies not only to other, more complex charging methods (constant current/constant voltage, complying with the multilevel security system), and discharge characteristics. That is why its state is not simply knowing the voltage that the display discharge will be delayed in a complex mathematical model to convert the voltage currently used capacity.

Accurate measurement of battery capacity

For accurate determination of the actual state of charge of the battery, is to apply the method of "counting kulombów". The main principle of operation is only slightly more complicated than a simple measurement of voltage and involves the simultaneous study as the voltage at the battery terminals and flowing and flowing zen current. Thus, you can, using appropriate calculations, often implemented in software or hardware in the discharge indicator is to determine the real state of the battery that matters, first of all, because of progressive with successive cycles of charging and discharging of the degradation of the battery capacity. This is precisely the reason why the battery two or three years the smartphone holds charge much less than from the instance directly from the shelves.

Indicators category of the store Botland

In our offer you will find some great modules that will allow You convenient and accurate measurement of the real operating conditions of the battery or a disposable battery. We pay particular attention to the battery discharge indicator series DFRobot Gravity. This small module is equipped with a system MAX17043 allows you to measure voltage and automatic recalculation of its value SOC (eng. State Of Charge – charge). You will find here also a Grove module with the joint counter kulombów LTC2941 used to measure the amount amperogodzin as increase the measuring current as the voltage on the battery.