It’s possible to prevent damaging memory from developing in your batteries. Crystalline formation, which causes battery memory in nickel-based batteries, is most pronounced if the battery is left in the charger for days, or if repeatedly recharged without a periodic full discharge. Since most of us do not use all of the energy in a battery before recharging it, a periodic discharge to one volt per cell is essential to prevent memory. This is known as “exercise.”
Nickel-cadmium batteries in regular use and on standby mode (sitting in a charger for operational readiness) should be exercised once per month. Between these monthly exercise cycles, no further service is needed. No scientific research is available on the optimal exercise requirements of nickel-metal-hydride batteries but based on the reduced crystalline buildup, applying a full discharge once every three months appears appropriate. Because of the shorter cycle life of the nickel-metal-hydride batteries compared to nickel-cadmium, over-exercising is not recommended.
So, yes, exercise is ALWAYS healthy – even for your batteries!
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