CommentStreams:B44a4f3c5d0f02ef29a1bf151aff404b

Hello again,

Previous 18650 LiFePO4 comment extended:

For X708 model there is the Key Features (wiki-geekworm-com/X708#Features) saying that it "supports 3.7V 18650 lithium battery and 3.7V lithium polymer battery. No capacity limit, only request 3.7V lithium battery".

However, on this wiki I couldn't find such information for X728 regarding the kind of batteries supported and the voltage. I just found the recommendation for Panasonic NCR18650B batteries which have 3.6v.

I discovered that LiFePO4 batteries are safer, they just can't burn. Which for me is something crucial if you want to leave RPi unattended. The only thing is that for 18650 LiFePO4 batteries, the more powerful I found was 3.2V and 1800mAh, and also the battery specs (copied bellow) say "Charge mode: CC/CV, use special Lithium LFP charger".

So, I would love to know if this LiFePO4 18650 battery model will still work in X728 UPS. The setup would be 4 x 18650 LiFePO4 3.2V 1800mAh, as I already have X728-C1 with space for 2 more batteries.

The battery specs are: Nominal voltage: 3.2V Nominal capacity (0.2C, 25ºC, current value of 1800mAh at 1C): 1800±2mAh Minimum capacity (0.2C, 25ºC): 1750mAh Discharge - Normal current: ≤0.9A Discharge - Fast discharge current: 1.8A Discharge - Max continuous current: 5.4A (@ 5min) Discharge - Max peak current: 10A (@ 5sec) Discharge - Cut-off voltage: 2.5±0.2V Charge - Charge voltage: 3.65±0.05V Charge - Charge current: ≤ 1.8A Charge - Cut-off current: 0.01C Charge - Charge mode: CC/CV, use special Lithium LFP charger

Thanks in advance!