Vectronics VEC-412K - Manual (Page 25)

VEC-412K Owner's Manual Rapid Battery Charger/Conditioner Kit
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Charge Rate recommended by the manufacturer should not be exceeded. Use
the charge rate C/2 if this information is not available.
Fast Charge Rate Time-Out HD1 HD2
C/2 180 mins. OPEN AB
C 90 mins. DE BC
2C 45 mins. DE OPEN
4C 23 mins. DE AB
Table 3. Fast charge rate Time-Out settings
Fast Charge Rate and Time Out are set with headers HD2 and HD1.
For example, a 500-mAh battery may be safely fast-charged at the 2C Fast
Charge Rating according to the manufacturer. The Charge Rate Current should
be set to 2x the mAh rating, or 1000 mA (HD4 2-3, HD5 1-2). The Fast Charge
Rate Time-Out should be set to 2C and 45 minutes (HD2 open, HD1 D-E).
Battery Top Off: Once a fast-charge cycle has completed, the charger will
continue periodically charging the attach battery as needed, assuring the battery
remains at full capacity. The Top Off charging current is a very low level and
will not damage charged battery packs.
Negative Increment of Voltage Detection Method: This method of determining
when a NiCd battery has reached full charge is controlled by the HD6 jumper
position. When the jumper is in the ON position the Negative Increment of
Voltage Detection Method is enabled.
IMPORTANT INFORMATION!
The Negative Increment of Voltage Detection Method can only be used for
NiCad batteries. A large negative drop at the end of charge is characteristic
of NiCads, and the charger senses this condition to determine the successful
completion of a fast charge cycle. HD6 must be OFF when charging NiMH
packs, as overcharging may result in dangerously high battery pack
temperatures.
The Negative Increment of Voltage Detection Method is enabled by placing the
jumper over the ON position of the HD6 header: