LiTime Lifepo4 12v 200ah /

How much life will it take off a new lifepo4 bat witch charging it this fast? 75a charger from the Yamaha gasoline generator on a 100a bms lifepo4 bat. 12v bat. 200ah/2560wh

The battery company does recomend 40a charger but it's sort of slow to charge

Does anyone know the charging time math? It's a 200ah bat. So 200amp charger, charges it in 1 hour? 100amp charger charges it in 2 hours? 50 amp charger charges it in how long?

If the cells are out of balance then a lower amp charge will give the BMS more time to do balancing.

In their FAQ they point out that the difference in the battery you have and the plus version is the BMS, nothing else is different and the plus can be charged at a much higher rate. Still, they recommend the lower charge rate elsewhere. My DIY 280Ah batteries get charged at up to 60 amps, but that's very infrequent.

In general, LiFePO4 battery likes to charge at 0.2-0.3c, or 40 to 60 amps in your case. Charging can go to 0.5c, or 100 amps, but it depends upon the rating of your battery. If the manufacturer recommends 40a (0.2c), then that is what you should do. 40a for 5+ hours to charge from 0%. Charging is slower at the top and bottom (if you use your battery down that far).

DIYrich said:

In general, LiFePO4 battery likes to charge at 0.2-0.3c, or 40 to 60 amps in your case. Charging can go to 0.5c, or 100 amps, but it depends upon the rating of your battery. If the manufacturer recommends 40a (0.2c), then that is what you should do. 40a for 5+ hours to charge from 0%. Charging is slower at the top and bottom (if you use your battery down that far).

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Okay great leads. Now I wouldn't mind buying a new battery in a few years. How long are these babies suppose to last under
Good circumstance? Additionally, how long would they last if I fast charged it? Say with 75a or 60A? Any one have any information or speculation with relative accuracy?

Also it's important to know that the battery will be receiving charges at anywhere from 1a to 16.6a from the two 12v 100w PV's, a great deal of the time. About, SAY, 60 percent of the time, on average. More so, in the spring & summer, (MN, USA) so that should be taken into account aswell. (I plan to add panels, too)

I don't really mind getting a new battery in 3 - 5 years or even 2 years, because they seem to only inprove and go down in price, also if this one isn't too worn out I would use it for projects, free energy Tesla coil looping projects, DC light systems in the sheds, maybe trolling motor battery, and back for up.

Also I hope to amp things up with larger battery in the system soon, more panels and atleast a 280ah battery. I like to keep it single battery because it think that's better on the cells health of them and everything?

Also keeping this one in tip top optimal health has its abvious and practical advantages. Gracias.

Yup Yup
Thanks in advance

nschizzano said:

Okay great leads. Now I wouldn't mind buying a new battery in a few years. How long are these babies suppose to last under
Good circumstance?

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5,000-10,000 cycles. Think 15 years.

nschizzano said:

Additionally, how long would they last if I fast charged it? Say with 75a or 60A? Any one have any information or speculation with relative accuracy?

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No idea. I would guess that after 3 years, you may loose 25% of the capacity if the battery is not designed for fast charging (dissipate heat).

nschizzano said:

Also it's important to know that the battery will be receiving charges at anywhere from 1a to 16.6a from the two 12v 100w PV's, a great deal of the time. About, SAY, 60 percent of the time, on average. More so, in the spring & summer, (MN, USA) so that should be taken into account aswell. (I plan to add panels, too)

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That will only charge 50% on a full 6 hours of sun.

nschizzano said:

Okay great leads. Now I wouldn't mind buying a new battery in a few years. How long are these babies suppose to last under
Good circumstance? Additionally, how long would they last if I fast charged it? Say with 75a or 60A? Any one have any information or speculation with relative accuracy?

Click to expand...

Most life expectancy discussions center around Depth of Discharge (DOD). Your battery maker is no different. Their literature says 15,000 cycles if you go to a 60% DOD. It doesn't say anywhere what the number of life cycles will be if you charge at .2C versus .5C.

I expect my DIY batteries to last 10 years. I doubt that I'll still own the RV before that time comes, so I won't really know how long they last.