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Mini USB Lithium Battery Charging Board
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Mini USB Lithium Battery Charging Board

Mini USB Lithium Battery Charging Board
Mini USB Lithium Battery Charging Board
Product Code: USB-CHARGER-PCB
Availability: In Stock
Price: £1.80
Ex Tax: £1.50
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When you buy from Stealthvape you can expect excellent service and products of genuine quality.
 
This USB charger pcb is an extremely small module measuring in at only 19mm x 25mm. It uses the TP4056 controller and is setup as default to charge at a 1A charge current.
 
The board runs on any 5 volt power supply, this can be through the usb connector or there are solder pads if you want to use your own connector / adapter. You need to make sure that the 5v supply whether usb or from an adapter is rated at least at a 1000ma output.
 
If using with smaller batteries, 14500, 18350 etc you will need to change the charge current from 1000ma to something more suitable. Most entry level lithium battery chargers such as Trustfire and Ultrafire charge at 500ma so consider that a suitable level if you're not sure what to change it to.
 
The algorithm for the correct rate to charge a lithium battery is to charge at 0.2 C to 0.7 C, C being the capacity of your battery.
 
So if you have a 800mAh XXXfire battery:
 
0.2 to 0.7, lets call it 0.5C
 
So 800 / 0.5 = 400ma charge current.
 
Please refer to your battery manufacturers technical specifications if in any doubt where you will find the suggested charge rate.
 
The resistor is a 0603 size smd resistor and are quite small so take care with your soldering if replacing. The resistor you need to swap to change the charge current is outlined in red in the second product image.
 
Resistor SMD 0603 Charging Current
30k 50mA
20k 70mA
10k 130mA
5k 250mA
4k 300mA
3k 400mA
2k 580mA
1.66k 690mA
1.5k 780mA
1.33k 900mA
1.2k 1000mA

Supplied with usb cable

Please note if you get the battery polarity wrong it will release the magic blue smoke that makes the charger work.

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