I'm working with some eg4 48V server racks and looking to expand my storage. I'm considering purchasing some 12.8V LiFePO4 batteries that seem affordable. Their documentation suggests that I can connect them in a 4-battery series (4p4s). However, I'm unsure if this will result in a different voltage than what my server rack batteries require. Am I on the right track, or could this lead to complications?
2 Answers
Honestly, I wouldn't skimp on this. Just get more eg4 batteries so they'll all communicate effectively. Mixing different cheap batteries could bring more headaches than it's worth, especially in series with your existing setup. Stick with what you know works, and keep things simple.
You might be able to connect them in theory, but I'd advise against it unless you're comfortable with a few technicalities. As long as the battery chemistry matches, it could work, but you'd need to ensure proper fusing and wire sizing. Plus, a 4-battery balancer is essential to keep everything working smoothly. Just keep in mind, without proper battery communication, you're kind of guessing whether it’ll run well together or not. Not the safest move, though!
Got it, thanks! I noticed the 12.8V LiFePO4 batteries come with an internal BMS, but I'm still finding conflicting info while researching. What should I focus on to avoid issues?
I hear you! Just trying to find a budget-friendly option, but I’ll look more into getting matching batteries. My inverter has had issues with my eg4 batteries, and clarity on communications would really help.