www.ebikes.ca/satiator
+1(604) 569-0902
- 16 -
Charging based on a temperature sensor is preferred and should always be used when a
temperature sensor is available. After the temperature rise is detected, the battery is about 95%
charged and the current is greatly reduced while charging is continued for a short amount of
time to reach 100% charged status. This is known as the topping charge. If charging at full
current is carried on to the –DeltaV point, then the pack has already been somewhat
overcharged and there isn't as much need for this additional topping current.
The custom parameters for NiMH/NiCad packs are quite different than for the other chemistries.
In the basic setup, the nominal rather than the full charge voltage is specified, and is mostly
used for pre-populating the advanced parameters and generating the profile name.
NiMH / NiCad Custom Profile Parameters
After any of the charge termination methods are detected, then the charger output current
reduces to
TopUp Amps
for the fixed duration of
TopUp Time
in order to bring the pack to a 100%
full charge.
Basic Parameters:
Range
Nominal Volts
12-48 V
Bulk Amps
1.0-8.0* A
Thermistor?
Yes / No
Advanced Parameters:
Default
Trickle Amps
0.5 A
Bulk Start Voltage
80% of Nominal Volts
DeltaV
-0.2V
Max Temperature*
50
o
C
dT/dt*
1 deg / min
Top-Up Amps
0.5 A
Top-Up Time
1.0 hr
Max Volts
1.4*Nominal VOlts
Figure 24:
Charging Graph of 36V NiMH / NiCad Pack
