Hello,
I am currently re-purposing my old powerbank for a robotics project (BMS and LiPo will be integrated into a 3D printed case).
The Powerbank (CellularLine FreePower Slim 5000) was unused for 7-8 months and while opening It,
I measured the cell voltage, which turned out to be ~0.7 V!
Normally I would think that this LiPo should not be able to be charged by the powerbank's BMS anymore,
but the powerbank BMS (IP5306 | Datasheet PDF here) charges is just fine.
While charging from 0.7 V to ~3V, the charge current was around 0.15 A.
When the cell voltage reached 3V, the current increased to 1.6 A.
Is this LiPo and BMS safe to use?
I would assume the cell should not be able to be charged anymore.
Btw the LiPo is not puffed or deformed (yet).
I am currently re-purposing my old powerbank for a robotics project (BMS and LiPo will be integrated into a 3D printed case).
The Powerbank (CellularLine FreePower Slim 5000) was unused for 7-8 months and while opening It,
I measured the cell voltage, which turned out to be ~0.7 V!
Normally I would think that this LiPo should not be able to be charged by the powerbank's BMS anymore,
but the powerbank BMS (IP5306 | Datasheet PDF here) charges is just fine.
While charging from 0.7 V to ~3V, the charge current was around 0.15 A.
When the cell voltage reached 3V, the current increased to 1.6 A.
Is this LiPo and BMS safe to use?
I would assume the cell should not be able to be charged anymore.
Btw the LiPo is not puffed or deformed (yet).