Charger for LiFePO4 Pack

[Robert62]

I just bought a new LiFePO4 pack made in China. It is 48v and 10 Ah. It came from the seller with a very plain charger that just has a red/green indicator light.
I happen to have some old chargers for 48v Li Mn chemistry batteries. Can I use the old charger for this pack? Can I internally adjust the charger to make it work? Both chargers put out somewhere around 56v for charging. Is the rate of charge controlled by the BMS? I understand that LiMn chemistry has a max voltage of 4.2v while LiFePO4 is 3.6v. How does that apply when charging in series?

I have read about this but it is not straight forward. Please educate me on this complex subject if you are knowledgeable.

[Robert62]

Upon further review, I found this: The output voltage of the LiFePO₄ chargers should be 58.4V (16 cells @ 3.65V) whereas the older LiMn₂O₄ chargers were only 54.6V (13 cells @ 4.2V)
This is amusing since I have chargers from reputable companies that say they supply 48 VDC. Obviously that is wrong. I also have a charger that was supplied for my LiFePO4 battery that is marked as 54.6v. I am now wondering if this battery is really LiFePo4 as marked or I got scammed.

[Robert62]

This battery was being fraudulently advertised as LiFePO4 on Amazon. It is NOT. I have tested the voltage and confirmed with the seller:

"Dear Guest, Hi. I consulted our engineers. He answered your question. The battery is Li(NiCoMn)O2, so the fully charged state is 4.2V one, and 13 groups are connected in parallel with 54.6V. Thanks for your question."

LiFePO4 batteries use a different charger with a higher voltage. If you were to use that charger with this battery you would likely damage it and there would be substantial FIRE HAZZARD.

Sorry about the delayed update. I am just getting around to using the battery now.

[73Eldo]

Yikes, one more variable to increase your chances of boom boom especially when coming form sketchy vendors.

Sucks when you cant get to a project right away and when you do its messed up and the warranty is up. Hope you get on the road (or dirt) soon!

[Robert62]

Now that I am confident the battery is standard Li chemistry, I'm scrapping that charger and using a Luna. I really like the ability to set the % of charge. I'll just swap some connectors around and be all set.