how to make a precision li-ion charger circuit. The heart of this circuit is the tl431 regulator. You can easily adjust the current by changing the 47 ohm resistor, decreasing the resistor value will increase the current. you can use any online tl431 calculator to get the voltage you want. Before connecting to the battery, please check the output voltage first.
1. TL431 Regulator
2.D882 transistor
3.1k ohm resistor
Resistance 4.680 ohm
Resistance 5.47ohm
6.LEDs
The world is moving away from fossil fuels and will one day become fully electric. In today's world, lithium-ion is the most promising battery chemistry of all. Most batteries used in laptops, RC toys, drones, medical devices, power tools, electric bicycles and electric cars (EV) are based on 18650. It is one of the Li -ion available, is produced in high volume and enjoys a low cost per Wh.
18650 battery (diameter 18mm and length 65mm) is a size classification of lithium-ion batteries, it has the same shape, but a little larger than an AA battery. AA batteries in comparison are sometimes referred to as 14500 batteries, as they have a diameter of 14mm and a height of 50mm.
Earlier I made a solar power generator which works really well so far. But the main problem is its weight, it is really heavy. The main weight of the solar generator is due to the heavy lead-acid battery inside. interior.So I decided to make a lightweight and compact 18650 Li Ion Battery Pack.
In this Instructable I will show you how to make a 18650 battery pack for applications like: Power Bank, Solar Generator, e-Bike, Power wall etc. The principle is very simple, just combine the number of 18650 cells in series and parallel to make a bigger pack and finally provide security by adding a BMS to it.
At the end of this project, I made a custom 3D printed case for the battery.
how to make a precision li-ion charger circuit. The heart of this circuit is the tl431 regulator. You can easily adjust the current by changing the 47 ohm resistor, decreasing the resistor value will increase the current. you can use any online tl431 calculator to get the voltage you want. Before connecting to the battery, please check the output voltage first.
1. TL431 Regulator
2.D882 transistor
3.1k ohm resistor
Resistance 4.680 ohm
Resistance 5.47ohm
6.LEDs
The world is moving away from fossil fuels and will one day become fully electric. In today's world, lithium-ion is the most promising battery chemistry of all. Most batteries used in laptops, RC toys, drones, medical devices, power tools, electric bicycles and electric cars (EV) are based on 18650. It is one of the Li -ion available, is produced in high volume and enjoys a low cost per Wh.
18650 battery (diameter 18mm and length 65mm) is a size classification of lithium-ion batteries, it has the same shape, but a little larger than an AA battery. AA batteries in comparison are sometimes referred to as 14500 batteries, as they have a diameter of 14mm and a height of 50mm.
Earlier I made a solar power generator which works really well so far. But the main problem is its weight, it is really heavy. The main weight of the solar generator is due to the heavy lead-acid battery inside. interior.So I decided to make a lightweight and compact 18650 Li Ion Battery Pack.
In this Instructable I will show you how to make a 18650 battery pack for applications like: Power Bank, Solar Generator, e-Bike, Power wall etc. The principle is very simple, just combine the number of 18650 cells in series and parallel to make a bigger pack and finally provide security by adding a BMS to it.
At the end of this project, I made a custom 3D printed case for the battery.
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