Ni/Cd / Ni/MH - End of Charge Detection

Principle Methods of End of Charge Detection:

Type of Control	Functioning	Graph
Control by timer:	Based on establishing a charge time, which when passed, the charger will either stop charging or change over to trickle charge.
Control by voltage detection.	Cut-off when pre-defined voltage level is reached. This is detection which is not used very often as it depends on the technology, the charging methods, the temperature, etc.
	Cut-off when maximum voltage level is reached. The charging is cut off when the Charge Voltage level reaches its maximum point.
	Cut-off by detection of negative variation in the charge voltage level. The charge intensity is cut-off when the charger electronics detect a pre-set negative variation in the battery charge voltage level. 10 mV/cell for the Ni/Cd for battery packs, and 5mV/cell for the Ni/MH cell.
Control by temperature:	Cut-off by absolute temperature. The charge is cut-off when the temperature reaches set levels. Normally this level is 45%. This level is not recommended since the battery can be charged insufficiently or in excess depending on the conditions of the temperature of the environment.
	Cut-off by pre-set temperature variation. The charge is cut off when the positive temperature variation runs between 0.5º C and 1ºC per minute. This is one of the most highly recommended methods.

All the technical data may be modified without prior notice.