In this video you can see how I managed to replace the lead acid battery on the UPS Eaton 5E1500iUSB with Li-ion 18650 cells. The battery is using PCB modules with 7 18650 cells connected in series. The total capacity is 230 W which is 1.5 times more that the original lead acid one.
18650 battery pack holder 7S bms Li-ion - s.click.aliexpress.com/e/_dYZnS1i
The test I made with this setup shown:
1. Very low cut of voltage of the UPS - less than 20V which can damage the 7s pack
2. Very low charging voltage - 27 V
3. Charging type was CC CV. Max. current was 1 A and the minimum I have measured was 100 mA
The conclusion is that I need to make the 6s pack and make the same tests with it. I think the solution that may wotk for most of the cases can look like this: photos.app.goo.gl/1YjmeaYJdyq...
----------------------------------------------------------------------------------------
If you would like support my videos you can donate: www.paypal.me/tedonash/
27 авг 2019