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• Lithium batteries have approx. 1.1 to 1.2 times the power capacity of
alkaline-manganese batteries.
• Lithium batteries feature greater efficiency at low temperatures when
compared with alkaline-manganese batteries. Lithium batteries boast
consistent performance in terms of recycling times and number of
flashes, regardless temperature changes.
• NiCd batteries boast a constant recycling time regardless of temperature
changes when compared with other types of batteries. Recommended for
use in temperatures as low as 0°C (32°F).
• Ni-MH batteries feature a constant recycling time but a little longer
recycling time at low temperatures when compared with NiCd batteries.
However, Ni-MH batteries maintain their efficiency regarding the number
of flashes regardless of temperature changes.
Notes on using alkaline-manganese and lithium batteries
• Non-rechargeable batteries such as alkaline-manganese and lithium
batteries should not be charged in a battery charger as they may
explode.
• Lithium batteries incorporate internal safety switches. When the battery
becomes hot, its safety circuit is activated, cutting off power. This often
occurs when the SB-28 is operated in the repeating flash mode. The flash
ready-light will not light up after firing approx. 24 exposures. However,
battery power will recover when the temperature goes back to normal.
Notes on using rechargeable NiCd and Ni-MH batteries
• When recharging batteries, be sure to use the battery charger specified
by the battery maker and read the instructions thoroughly.
Recharging should be done in temperatures from 10° to 30°C (50° to
86°F).
• Do not recharge NiCd or Ni-MH batteries with their terminals reversed in
the charger or before the batteries have cooled off sufficiently.
• Overcharging and excessive use may shorten battery life. Do not
overcharge and be sure to turn the SB-28 off when not in use.
• Because flash consumes a large amount of battery power, rechargeable
batteries may not operate properly before reaching the end of their stated
life-span or the number of charging/discharging as specified by the
battery manufacturer.
• If NiCd or Ni-MH batteries do not last as long as they should after being
fully charged, they are approaching the end of their life. Replace them
with a new set.
Notes on batteries