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Tutorial Built in DIY UPS for Modem

qtEulah

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Made this setup because we have power issues. also its annoying when i get
disconnected from the internet while playing games.

parts used:
10000mah li-ion batt
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modem:
b315s-936

note:
default max support is 8ah, since I used 10ah battery, I have to short jp2 pads.
if your modem only requires 9v, you can unshort jp1 pads next to the capacitor
1673020172905.png


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note: make sure to cover BMS with masking tape to avoid short circuit
20230106_184319.jpg


video samples:
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i forgot to add battery switch, will update if i got some spare time.
 

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