UPS POWER BOX

UPS (continuously charging) with Li-Ion 18650B and Battery Charger Board. Adjustable Output Voltage. Easy change cover by use case (led tree, ups for rpi, powerbank, ...).

INPUT: 4.5 V - 8 V DC
OUTPUT: 4.3 V - 27 V DC (adjustable)
MAX CHARGING: 1 A
MAX DISCHARGING: 2 A

SWITCH ON = charging on + output on
SWITCH CHARGE = charging on + output off
SWITCH OFF = charging off + output off (Charger Board disconnected)

Red light = Charging
Green light = Fully Charged

PCB (possible download from here for other project)

https://www.fstimer.cz/wiki/doku.php?id=optobrany_-_mala_casomira#plosny_spoj_opt_20

https://www.fstimer.cz/wiki/doku.php?id=optobrany_-_mala_casomira#plosny_spoj_opt_10

Battery Holder for Li-on 18650B with Protection Board

https://www.prusaprinters.org/cs/prints/31379-battery-holder-for-li-on-18650b-with-protection-bo

Micro USB PCB Female

https://www.aliexpress.com/item/32779407561.html

Li-Ion 18650 Battery Charger Board DC-DC Step Up Boost Module

https://www.aliexpress.com/item/32908819094.html

Li-Ion 18650 Battery Protection Board

https://www.aliexpress.com/item/32893531368.html

Li-Ion 18650 Battery Holder

https://www.aliexpress.com/item/32816694931.html

Li-Ion 18650 Battery (verified capacity)

https://www.aliexpress.com/item/32324914059.html

Toggle Switch 8 Pins 3 files 2P3T DP3T

https://www.aliexpress.com/item/32799686188.html

Banana Panel Socket Connector

https://www.aliexpress.com/item/32785322923.html

Banana Plug Connector

https://www.aliexpress.com/item/32758916948.html

Inserts Brass (M2x5x3.5mm)

https://www.aliexpress.com/item/32842866575.html

Screws Flat Head (M2x5mm)

https://www.aliexpress.com/item/32871056705.html

Hex Nut M2

https://www.aliexpress.com/item/32585008102.html

USB-A Female

https://www.aliexpress.com/item/33047977518.html

Print instructions

Box and Cover = Black PET-G
Charging Hole Col = Transparent PET-G