Your Reliable Lead Acid Battery Manufacturer

Outperforming peers, BLJ Solar has optimized the discharging of our sealed lead acid rechargeable batteryat high currents as well as at low temperatures by developing its ‘s unique lead-acid battery structure and advanced battery formula.

Raidysolar’s sealed valve-regulated maintenance-free lead-acid batteries employ a multi-component alloy that is free of antimony in the grid manufacturing process. By utilizing top-notch, high-purity raw materials and maintaining a pristine production environment, our lead-acid batteries exhibit significantly reduced self-discharge, measuring only a quarter of what is typically observed in conventional lead-antimony alloys.

To optimize the lead acid battery’s cycle life, it is recommended to implement 100% deep discharge, limit charge current to 0.25C, voltage below 2.4-2.5V/cell, and charge capacity at 120% of the discharge. Extends life to 300+ cycles.

For our lead-acid batteries, by maintaining the charging voltage within the range of 2.25-2.3V per piece and operating in an ambient temperature between 15-25°C, the battery can achieve a remarkable float charge life of 8-10 years.

The floating charging method commonly employs a constant voltage and current-limiting approach. When determining the appropriate constant voltage value, it is essential to consider two factors. Firstly, the voltage should ensure that the amount of electricity charged compensates for any capacity loss caused by self-discharge. Secondly, it should minimize the risk of battery overcharging and associated damage.

Charge curve of Raidysolar lead-acid battery

At 25°C, the float charge voltage for lead-acid batteries is 2.3V/unit. Temperature deviations require float voltage correction using -3mv/°C/cell, adjusting voltage per degree Celsius change.

For circulating lead-acid batteries, use constant voltage and current limiting charging. Limit current to 0.1-0.2CA. At 25°C, charge at 2.4V/cell, adjust voltage by 0.4mv/°C/cell for other temperatures. Use timing or automatic current limiting to prevent overcharging.

Charge curve of Raidysolar lead-acid battery

The sealed lead acid rechargeable battery will lose part of its capacity due to self-discharge during transportation and storage. Hence, the lead acid batteries should be recharged before putting into use when storing for a long period.

When the storage time is less than one year, the battery should be charged at a constant voltage of 2.25V/cell for 5 days.

If the storage time is 1~2 years, the battery should be charged under the condition of a constant voltage of 2.30V/cell for 5 days.

Relationship between the remaining capacity of the lead acid battery and its open circuit voltage.