Nikon SB27 Instruction Manual - Page 82
About NiCd batteries, Using the SB-27 in low temperatures
UPC - 718122379309
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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.