12v 4s 30a Lifepo4 BMS - Series Capable 12/24/36/48v Toshiba The negative wire is missing

The negative wire is missing

Maintenance: Keep the device clean and free of debris

Dimensions of each module are 17

and 4x epoxy insulator boards are included for this price

12v 4s 30a Lifepo4 BMS - Series Capable 12/24/36/48v Toshiba The negative wire is missingThese BMS units were recovered from medical batteries. They are one of the highest quality 4s lifepo4 30a BMS units you will find. They can also handle 80 amps for up to 30 seconds. Since they have upgraded mosfets they can be series connected up to 48v. Fully charged 14. 6v Fully discharged 10v Max continuous charge 20a Max continuous discharge 30a 30 second pulse discharge 80a Dimensions 6 5 8" x 2 3 4" x 7 8" As you can see in the 3rd photo the B