The “memory effect” is a well-known issue with Ni-Cd batteries, though modern versions are less prone to it.
What Is the Memory Effect?
If a Ni-Cd battery is repeatedly recharged without being fully discharged, it “remembers” the shortened cycle and loses capacity over time.
How to Prevent It:
- Occasional Full Discharge: Let the battery drain completely before recharging.
- Use Quality Chargers: Smart chargers help mitigate memory effect.
- Avoid Partial Cycling: If possible, use the battery until it’s nearly empty.
Note: Newer Ni-Cd batteries have improved chemistry, reducing memory effect concerns.