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MI 3288 EI Tester Safety and operational considerations
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Typical charging time is 3 hours (Battery type: 18650T22A2S2P) in the temperature range of
5°C to 60°C.
Ich/8
Ich
TLTF
TCOOL
TWARM
THTF
Charge
Suspended
Charge
Suspended
Temperature
Current
Charge
Figure 2.7: Typical charging current vs temperature profile
where:
TLTF .................................... Cold temperature threshold (typ. -15°C)
TCOOL .................................. Cool temperature threshold (typ. 0°C)
TWARM ................................. Warm temperature threshold (typ. +60°C)
THTF .................................... Hot temperature threshold (typ. +75°C)
The charger continuously monitors battery temperature. To initiate a charge cycle, the battery
temperature must be within the TLTF to THTF thresholds. If battery temperature is outside of this
range, the controller suspends charge and waits until the battery temperature is within the TLTF
to THTF range.
If the battery temperature is between the TLTF and TCOOL thresholds or between the TWARM and
THTW thresholds, charge is automatically reduced to ICH/8 (1/8 of the charging current).
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