How to choose household lithium phosphate batteries
The selection of household lithium iron phosphate batteries should comprehensively consider performance, safety, and adaptability. The following are the key points:
Cell quality
Prioritize the selection of B-grade battery cells from top tier brands such as CATL, BYD, and Zhongchuang Aviation, whose performance is close to or even exceeds that of some small factory A-grade battery cells. Attention should be paid to distinguishing false advertising of "brand new A-grade battery cells", which are mainly supplied to electric vehicle manufacturers and difficult for ordinary consumers to obtain.
parameter matching
Capacity and Voltage: Household devices need to choose their capacity (Ah) and voltage (V) according to actual needs. For example, lightweight batteries are recommended for portable devices, while fixed energy storage devices place more emphasis on capacity and durability.
Cycle life: High quality lithium iron phosphate batteries can have a cycle life of over 2000 times. It is recommended to check the cycle life data provided by the manufacturer when purchasing.
Security and protection
BMS system: Intelligent BMS can prevent issues such as overcharging, overdischarging, and short circuits, extending battery life. It is recommended to choose first-line brand protection boards such as Jikong and Ant.
High temperature performance: Lithium iron phosphate batteries are more stable in high temperature environments, with a decomposition temperature of up to 800 degrees, and are safer than ternary lithium batteries.
Adaptation verification
Appearance and weight: Check the battery for cracks, rust, expansion, or leakage. The weight should be proportional to the capacity (polymer cells are lighter).
Test verification: Use a multimeter to test the internal resistance (high-quality batteries have low internal resistance) and discharge stability (continuous discharge for 10 minutes without overheating).
Purchase recommendation
Channel selection: Priority should be given to stainless steel shell batteries that support disassembly and inspection (internal structure can be viewed) to avoid products that cannot be disassembled due to rivet packaging.
After sales guarantee: Confirm the warranty terms when purchasing to avoid losses caused by after-sales inconvenience.
