Q1: Why won't the battery charge or why does charging take too long?
A1: High internal resistance or a protection board fault can cause this, as can a large voltage difference or zero voltage in the battery pack.
Q2: Why will the battery catch fire?
A2: Imbalance in cell voltages leading to overcharging or deep discharging, or physical damage like punctures or compressive forces causing a short circuit can ignite a battery.
Q3: Why might a battery swell?
A3: Over 15 days of storage at full capacity storage, high-temperature storage leading to electrolyte decomposition, or external damage like punctures can cause swelling.
Q4: Can a fully charged battery be stored long-term?
A4: Do not store full capacity battery for more than 7 days. It's best to store at 3.70-3.90V per cell and cycle charge every 1-2 months if not in regular use.
Q5: What environment should the battery be stored in?
A5: Store in a cool, dry place with temperatures between 15-35°C and humidity at 65%.
Q6: What is the optimal storage voltage for a battery, and what is the typical factory charge level?
A6: Ideal voltage is between 3.70-3.90V per cell, with a factory charge level of 30-60%.
Q7: Why does a battery show zero voltage?
A7: Improper use leading to overcharging or deep discharging, short circuit, or prolonged storage can result in zero voltage.
Q8: What causes high self-discharge in batteries?
A8: Main factors include internal resistance, electrolyte activity, separator quality, and impurities on internal electrodes. Improper use causing overcharging or deep discharging can also increase self-discharge.
Q9: Can a battery be repaired if it was over discharged or overcharged once?
A9: It depends on the severity; minor instances won't impact usage but will shorten lifespan. If overcharge doesn't exceed 4.27V and discharge isn't below 2.5V, it's considered minor. If exceeded, it is no longer recommended for use.
Q10: Should I charge or discharge a new battery first? How?
A10: Start with a low current discharge (1-2A), then charge and discharge at 1A current 2-3 times to activate the battery.
TA3200
TA1000
TA9000
