Valence 12.8v 138ah 1.8kWh U27-12XP

These batteries are all in working condition and they were recovered from hospital equipment. Medical batteries often don't get used too much so they are perfect for solar storage and many other applications. They are not capacity tested but we open every battery to make sure they are balanced and all cells have good voltage. These batteries are in great condition and all you have to do is add a 4s lifepo4 BMS or you can series these and make any configuration you want. The balance leads are easily accessible so you can reuse them for your BMS. The positive and negative posts are live and direct so when you add your BMS the B- on the BMS will go to the negative post and the C- will become your new negative for charge and discharge.

These batteries have something that looks like a BMS but it is not. You will need to add a BMS to these. What looks like a BMS is actually a BMU which communicates to another system that will turn the battery on and off. Valence has one called the U-BMS as mentioned in the specs on the 3rd photo but it is not guaranteed to work with that system. It is very easy to add your own BMS. You can open the front access plate and have access to all the wiring to add your own BMS very easily. The BMS right now just communicates to something else so it will not shut down automatically. It simply just communicates. At this price you can add a 4s lifepo4 BMS very easily and have an excellent battery that will last a long time.

To open the front you only need a T-15 security bit. If you don't have one already you can find them at Harbor Freight, Home Depot, Lowes, Amazon, or Ebay. You do not need the bits with the hole in the center.