A young Nigerian man using a 2kVA solar inverter with a 260Ah tubular battery has taken to social media to express his frustration over the battery's performance. Despite charging to full capacity in just 30 minutes, the battery lasts only about 1 hour and 20 minutes when powering a 340-watt load.
Details of the Solar Setup
In his Facebook post, Shedrack Iliya described his solar energy system, which includes two 550W solar panels, a hybrid solar inverter of 2kVA with an inbuilt MPPT 80A, and a single 260Ah tubular battery. He pleaded for help, stating that the battery gets fully charged within 30 minutes but discharges quickly.
Public Reactions and Advice
The post attracted numerous comments from users offering suggestions. Mohammed Al-Uniquah advised adding another panel of the same size, noting that a 260Ah battery has a rated power of 6240 watts, with a usable capacity of 3120 watts at 50% depth of discharge for tubular batteries. Ernest Okechukwu recommended connecting panels in series while considering the inverter's maximum PV input, emphasizing that tubular batteries require proper handling. Kemmy Okebie pointed out that a single battery cannot handle such a load, while Nazifi Yau Na Baba suggested the battery might be faulty, as a good tubular battery should last 3 to 5 hours under such load. Chinonso Celestine Great-Man opined that the battery might not be original and advised upgrading to a 24V system or using lithium batteries. Henry Okoro suggested switching to lithium for peace of mind, and Obinna Onumaegbu explained that a battery charging quickly indicates weak cells.
Expert Insights on Tubular Batteries
Tubular batteries are known for their durability and deep discharge capabilities, but they require proper sizing and maintenance. Experts recommend matching battery capacity with load requirements and ensuring adequate solar panel capacity for efficient charging. In this case, the 340-watt load may be too high for a single 260Ah battery, leading to rapid discharge.
This incident highlights common challenges faced by Nigerians adopting solar energy systems, especially when components are mismatched. Users are encouraged to consult professionals and consider lithium batteries for higher efficiency and longer lifespan.
