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Home > Custom LiFePO4/LiFeMnPO4 Batteries
Category : Custom LiFePO4/LiFeMnPO4 Batteries
Lithium Iron Phosphate (LiFePO4, LFE) is kind of Li-Ion rechargeable battery for high power applications, such as EV car , Power Tool and RC hobby. LFP cells feature with high discharging current, non explosive, long cycle life (>2000@0.2C rate, IEC Standard), but its energy density is lower than normal Li-Ion cell (Li-Co) (higher NiMH cell). Please click Knowledge on LiFePO4 battery to learn more detail. LFP cell has 3.2V nominal working voltage and shall be cut-off power at 3.6-3.8V per cell during charging. Please see the table below to see comparison between LFP and other rechargeable batteries. LFP battery has the lowest cost if considering its long cycle life
| Chemistry |
Voltage |
Energy Density |
Working Temp. |
Cycle Life |
Safety |
Environmental |
Cost based on cycle life x wh of SLA |
| LiFePO4 |
3.2V |
>120 wh/kg |
-20-60 °C |
>2000(0.2C
rate, IEC Standard) |
Safe |
Good |
0.15-0.25
lower than SLA
|
| Lead acid |
2.0V |
> 35wh/kg |
-20 - 40°C |
>200 |
Safe |
Not good |
1 |
| NiCd |
1.2V |
> 40wh/kg |
-20 - 50 °C |
>1000 |
Safe |
Bad |
0.7 |
| NiMH |
1.2V |
>80 wh/kg |
-20 - 50 °C |
>500 |
Safe |
Good |
1.2-1.4 |
| LiMnxNiyCozO2 |
3.7V |
>160 wh/kg |
-20 - 40 °C |
>500 |
better than LiCo |
OK |
1.5-2.0 |
| LiCoO2 |
3.7V |
>200 wh/kg |
-20 - 60 °C |
> 500 |
Unsafe w/o PCM |
OK |
1.5-2.0 |
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Q: I am trying to charge my battery through Solar Panel. If the battery pack already has the PCB/PCM protection, do I still need the solar charger controller ?
A: Yes, you do need the solar charger controller since it will regulate the voltage from solar panel for your battery pack.
Q: If I want to solar charge LiFePO4/Lithium Ion battery, which already has PCB, would a normal SLA controller work fine?
A: For LiFePO4 / Lithium Ion battery, we always recommend to use LiFePO4/Lithium Ion solar controller. Especially if you are using the battery as UPS (back up power supply). The Lead Acid solar controller will constantly provide pulse current to the battery, in the long run, it might damage the PCB. So the PCB won't be able to protect the battery when it should be.
The LiFePO4 / Lithium Ion solar controller won't provide constant current when the battery is fully charged. So it is much safer and reliable. |
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