Forum Discussion

2oldman's avatar
2oldman
Explorer II
Jan 23, 2017

Li batteries at 48vdc

After much deliberation and questions, I'll likely be purchasing the 48v Lithium battery pack instead of 4-12v. I liked the idea of 12v batteries for weight and ease of handling, but the possible cell-balancing issues are a deal-breaker. Looks like the 48v pack will be around 130lb. I'll just have to find a couple guys to get it in there. Once in, it shouldn't ever have to come out... at least not in my lifetime.

According to the techs at Relion, cell balancing issues can occur if discharged below 80%. And if I only went with 100a of total capacity, that's a possibility.

Relion company is redesigning their 48v 150ah pack (which I think would be more than sufficient), so I'll be waiting to see what they come up with.

342 Replies

  • No first hand information on Relion battery packs but here are a couple of quick items in general about Lithium Ion battery pack.

    • Ingeneral, there are 2 types of Lithium Ion batteries
      1. lithium cobalt oxide, LiCoO2
      2. Lithium iron phosphate LiFePO4
    • LiFePO4 are "safer" but require different charging techniques
    • For best performance, Li-Ion packs should be balanced, but this requires batteries to have extra leads as well as skeptical charges


    These should last a LONG time !
  • 2oldman,

    Was the issue due to connecting 4 12's in series? I don't understand why that would make any difference if the cell count is the same.

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,344 PostsLatest Activity: Mar 27, 2025