How To Charge A LiFePO4 Battery

LiFePO4 batteries have elite execution and a long period of more than 2000 cycles. In any case, for their steady and strong activity, it is critical to keep the guidelines of activity, including the need to charge LiFePO4 batteries appropriately. To do this, unique LiFePo4 chargers are utilized. These chargers utilize the Constant Current (CC)/Constant Voltage (CV) calculation.

At stage 1, charging happens at a steady current, and an expansion in voltage is noticed. At the point when its worth arrives at the set greatest – 3.6 or 3.65 V per cell, the voltage stays unaltered, and the charge current declines to a base. At this stage, the last arrangement of limit happens – the leftover 5-10% of the charge. This standard of re-energizing gives full recharging of the limit hold without the gamble of cheating the cells.

At the point when What And How To Charge LiFePO4 Batteries

1. When?

LiFePo4 batteries can be re-energized regardless of whether they are not completely released. They don’t have an articulated memory impact, thusly they permit incomplete renewal of the charge and re-energizing at any release level – no less than half, something like 20%. Thusly, it is energetically prescribed to charge battery when the level is underneath half. However, this is discretionary. The primary thing is to forestall profound release of batteries and their stockpiling in this state. In the event that the battery level is very low, you should not stand by it to release and quickly re-energize it completely. It is adequate to charge the LiFePO4 cells most of the way before capacity. This will assist with diminishing the regular decline in battery limit during capacity.

2. How?

At temperatures over 0 and up to +40 °C, energizing flows to 10C. This is the allowable most extreme in the subject of how much current to charge LiFePO4 batteries. In any case, in the event that quick charging isn’t needed, it is smarter to utilize more modest charging flows – from 1C to 5C. A BMS control framework is expected to safeguard your battery from overheating and cheating. Notwithstanding it, the sensor in the charger can perform security capabilities. To abstain from overheating, don’t cover the battery or charger while charging.

3. What?

Best of all – “brilliant” chargers. Required – reasonable for LiFePO4 batteries, with an end voltage of 3.65 V per cell. Prior to charging lithium-iron-phosphate batteries, such gadgets decide their present status with short voltage heartbeats and start the beginning of the re-energizing cycle from the ideal stage.

Charging Sequence

Li-particle batteries overall and LiFePO4 specifically ought to be charged at room temperature. Re-energizing at freezing temperatures is unsatisfactory. Subsequent to remaining exposed, the battery should be saved in the space for essentially an hour with the goal that it heats up. A drained battery ought not to be left uncharged for quite a while. If not, irreversible cycles will start to happen in it, which will prompt a drop in limit and a decrease in assets.

The bit-by-bit course of charging LFP batteries is as per the following:

  • Embed the connector of the charger into the battery space accommodated it.
  • Interface the charger to a 220 V organization.
  • Intermittently notice the charge pointer – at first the red light will be on, and after the finish of the re-energizing interaction – green.
  • You can detach the battery or pass on it to charge for another 5-8 hours to adjust the cells. It is prescribed to complete it at time frames 4 charges, yet not at least a few times per month.
  • To switch off – turn off the charger from the attachment, and afterward detach its connector from the battery.


For lithium-iron-phosphate batteries to serve for quite a while and appropriately, you want to deal with their right charging. Despite the fact that batteries of this kind are more impervious to brutal working circumstances, you shouldn’t disregard the suggestions of the LiFePo4 battery producers. It is important to accuse such batteries of chargers intended for them at room temperature, with flows from 1C to 5C (in outrageous cases, up to 10C), ideally to the full level.

Deficient charges for lithium batteries are not horrible, however in the event that conceivable it is smarter to finish the charging system so as not to add to a drop in battery limit. The most extreme voltage while charging LiFePO4 batteries ought to be 3.6-3.65 V per cell. This voltage compares to a 100 percent charge level.