Nikon instruction manual About NiCd batteries, Using the SB-27 in low temperatures

Notes on batteries

About NiCd batteries

Please note the following points when using NiCd batteries.

•NiCd batteries feature a faster recycling time and greater efficiency at low temperatures than alkaline-manganese batteries.

—Other performance data differs depending on battery conditions, and whether or not batteries are fresh or fully charged.

•When charging NiCd batteries, be sure to use the battery charger specified by the battery maker and read the instruction manual thoroughly.

•Charging should be made in an ambient temperature ranging from 10°C to 30°C (50°F to 86°F).

•Do not recharge NiCd batteries with the reverse terminals connected or before the batteries have cooled off.

•Overcharging and excessive use may shorten battery life. Do not overcharge and be sure to turn the power OFF when not using your Speedlight.

•If NiCd batteries do not last as long as they should after being properly charged, they are approaching the end of their life. Replace them with new ones.

Using the SB-27 in low temperatures

As the temperature drops, battery performance becomes degraded. When taking photographs in low temperatures, use fresh batteries, and keep a set of spares in a warm place (e.g. a coat pocket), or use fully-charged NiCd batteries. The SB-27 will not fire if weak batteries are used in low temperatures.

—Battery power will recover when the temperature goes back to normal. Avoid warming or cooling the batteries too quickly as this may cause battery voltage to become unstable.

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