Hi friends,
Got this simple power bank of 8800mAh capacity but the inside battery seems to be failing. It is not taking any more useful charge. The dmm measured the battery reading about 0.17vdc. The input is rated at 5v 2.0A. I was thinking about replacing the failed battery with some extra batteries from my used laptop battery pack.
The laptop battery pack is AL15A32( rating 14.8v 2350mAh) consisted of 4 series joined 18650 type li ion battery. However, one of the battery showed only 0.15vdc but the remaining 3 are still within 3.77v to 4.21vdc. Is it possible and safe to cut off the 3 li ion battery and solder to the power bank connector and try charging with an off the shelf 5v 1.5A phone charger? I wish to rebuild this set of battery pack as a power bank and hope for any advice if this can be done.
Got this simple power bank of 8800mAh capacity but the inside battery seems to be failing. It is not taking any more useful charge. The dmm measured the battery reading about 0.17vdc. The input is rated at 5v 2.0A. I was thinking about replacing the failed battery with some extra batteries from my used laptop battery pack.
The laptop battery pack is AL15A32( rating 14.8v 2350mAh) consisted of 4 series joined 18650 type li ion battery. However, one of the battery showed only 0.15vdc but the remaining 3 are still within 3.77v to 4.21vdc. Is it possible and safe to cut off the 3 li ion battery and solder to the power bank connector and try charging with an off the shelf 5v 1.5A phone charger? I wish to rebuild this set of battery pack as a power bank and hope for any advice if this can be done.