12V + 12V 7Ah Li-ion Battery Pack For CyberPower 1350AVR UPS

CyberPower 1350AVR 120V 60Hz 815 W
12.60V + 12.60V 7Ah Li-ion Battery Pack
CyberPower 1350AVR UPS Shutdown voltage: 20V
Step: www.yousun.org/archives/876

[@frankjdm4636]

Thank you my Guy!

[@zombieryder]

Hi how much is the bms and where did you buy it

[@azimzain1211]

Hi..30amp bms enough for 12v system?

[@engineer323]

7:29 I understand it ~ 57 watts (2.37A * 24V) is the consumption of idling or under load, taking into account the efficiency of the UPS?

[@yousun2827]

2.37A I loaded a light bulb. UPS no load 0.7A.

[@ahmadshah3621]

Hi ! Very detailed videos about BMS and Lion battery conversions.Please guide me if the BMS also provides CC CV charging, or it is the dc adatptor that should have builtin CC CV function.Simply whethter the BMS only balances individual cell voltages or it also performs CC-CV charging? I am planning on replacing dry lead acid battries of UPS, 12V battries six in series (72V system).Is it possible to charge the Lion pack with same UPS? Thanks in advance.

[@yousun2827]

Yes! Need to customize BMS, 72V system is expensive to use lithium battery.

[@ahmadshah3621]

@@yousun2827Hi! Thanks for replay.in your Lion 12 volts pack conversion of cyberpower UPS, you installed a BMS to protect the Lion Pack.But what about charging this pack by the ups that was originally designed for lead acid battery charging?will there be any affect in the charging process? thanks again!

[@Dinesh-Bhardwaj]

@@yousun2827 hi i am also working on a same project. But i am worried by the battery charger in the ups which is designed for lead acid batteries.

[@vsl5917]

good job, what kind of cell have you used for this battery? and how many in series and parallel?

[@yousun2827]

Sony US18650V 3s7p

[@vsl5917]

OK thank you

[@alanbrown7155]

Hello there. I have just ordered a 27ah battery & a 4s BMS, upgrading my 3 other 27ah batteries I bought off you a while back. When you send my battery & 4s BMS out can you please do a diagram of how to wire 4 of these batteries together please. Thanks bud.

[@yousun2827]

OK! I have already checked, transport tomorrow.

[@hassangamal6531]

Hello 👋 Is that safe to connect two BMSs in series ?

[@yousun2827]

BMS is made by myself and it is safe to connect in series.

[@Dinesh-Bhardwaj]

@Yousun hi i am also working on a same project. But i am worried by the battery charger in the ups which is designed for lead acid batteries.

[@yousun2827]

Add a capacitor to the charging terminal to stabilize the voltage.

[@Dinesh-Bhardwaj]

@@yousun2827 capacitor voltage and capacitance? Is there a way to use seperate li ion charger? If yes, how to connect?

[@yousun2827]

Connect multiple high-power diodes in series.