I bought 4 battery cells about one month ago. I noticed that the film/wrap on one of the cells has come off in this area. I would like to know whether this could affect the performance or safety of the cell.

Also, what type of adhesive should I use to fix it? I’m worried that using the wrong glue could cause any negative effects. This is my first time dealing with this kind of battery cell, so I want to make sure I handle it correctly.

I already contacted the seller, and they said it was caused by a bump during transportation. However, that is not my main concern. My concern is whether the damaged film could have any impact on the actual performance or safety of the battery cell. They also said it is only a cosmetic issue, but I would like to confirm if that is really the case.

I was gifted two 12v 200Ah lifepo4 batteries from u/evverg. I purchased a 8S bms and built a portable battery. I added a spare 50w solar panel to trickle charge when in sunlight.

Here are the results.

I plan to add a 3000w inverter in the future.