Ladies and gents,
Long time reader first time poster.
Finally received my 8 200ah cells and am looking forward to building 2 12v batteries with them. While waiting for the correct sized ring terminals to come in to hook up the BMS, I started charging up the cells to top balance them. I had cells in a 4s configuration with the power supply set to 14.4v. I planned to hook all up in parallel to top off to 3.65. When it had finished bringing the bank up to 14.4 I had 3 cells at 3.33v and 1 at 4.4v. The overcharged cell did not swell or get warm so I’m hoping it’s not to badly damaged.
What would cause this? Bad cell? Something I did wrong?
My plan is to discharge the overcharged cell and wait till I hook up the bms to charge them anymore
Long time reader first time poster.
Finally received my 8 200ah cells and am looking forward to building 2 12v batteries with them. While waiting for the correct sized ring terminals to come in to hook up the BMS, I started charging up the cells to top balance them. I had cells in a 4s configuration with the power supply set to 14.4v. I planned to hook all up in parallel to top off to 3.65. When it had finished bringing the bank up to 14.4 I had 3 cells at 3.33v and 1 at 4.4v. The overcharged cell did not swell or get warm so I’m hoping it’s not to badly damaged.
What would cause this? Bad cell? Something I did wrong?
My plan is to discharge the overcharged cell and wait till I hook up the bms to charge them anymore