La Crosse Technology BC700 Instruction Manual page 12

Note :
The current cannot be altered once the setting has been confirmed in the initial stage.
This can avoid the user changing the current setting accidentally while doing setting
on other rechargeable batteries. If one wants to change the applied current afterward,
the rechargeable batteries must be taken out and inserted again.
The maximum charging current of other rechargeable batteries are restricted by the
current setting of the first inserted rechargeable battery. For instance, if the first
inserted rechargeable battery is set to charge at 500 mA, then the second, third and
fourth rechargeable batteries can be only set to charging at a maximum current of 500
mA.
"Full" sign is shown -The battery
is fully charged
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