Canon POWERSHOT SD400 DIGITAL ELPH User Manual page 22

oDo not allow any metalobjects such as keyrings to touch the _ and (_
terminals (Fig.A), asthis can damagethe batterypack.To carrythe battery
packor store it during periods of disuse, alwaysreplacetheterminal cover
(Fig. B). Youmay beable to check the chargestate when Battery Pack
NB-4Lis used dependingupon how the terminal cover is attached
(Fig. C, D).
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iN NNN:ble ; ; N:N N:_!_
oEven charged batterypacks continueto dischargenaturally.Youare
advisedto chargethe batteryon the day of use, or one day before,to
ensurea full charge.
oSince storing a fully charged batterypackfor long periods of time (about
oneyear) may shortenits life cycleor affect its performance,you are
recommendedto use it in the camerauntil it is completelydischargedand
to store it in an indoor location with low relativehumidity and betweenthe
temperatures of 0 to 30 °C (32 to 86 °F).If you do not use the batterypack
for long periods of time, chargeit fully and dischargeit fully in the camera
aboutonce a year before returningit to storage.
elf the performanceof the battery packdiminishessubstantiallyevenwhen it
is fully charged, its life has beenexceededandit should be replaced.
2O