Do lead-acid batteries have “memories”?
Lead-acid batteries do not have the “memory effect” mistakenly identified with first generation Ni-Cad batteries. Continuous undercharging will lower the capacity of the battery over time due to the accumulation of permanent lead-sulfate or “sulfation”. Deep discharges below twenty percent State-of-Charge (approximately 12.0 volts) can damage car batteries and will significantly shorten their service lives.
