In-Cell Charge Control or I-C3 is a method for very rapid charging of a
Nickel-metal hydride battery, patented by
Rayovac. Batteries using this technology are commonly sold as "15-minute rechargeables".
The charge control consists of a
pressure switch
A pressure switch is a form of switch that operates an electrical contact when a certain set fluid pressure has been reached on its input. The switch may be designed to make contact either on pressure rise or on pressure fall. Pressure switches ar ...
built into the cell, which disconnects the charging current when the internal cell pressure rises above a certain limit (usually 200 to 300
psi
Psi, PSI or Ψ may refer to:
Alphabetic letters
* Psi (Greek) (Ψ, ψ), the 23rd letter of the Greek alphabet
* Psi (Cyrillic) (Ѱ, ѱ), letter of the early Cyrillic alphabet, adopted from Greek
Arts and entertainment
* "Psi" as an abbreviatio ...
or 1.4 to 2.1
MPa
MPA or mPa may refer to:
Academia
Academic degrees
* Master of Performing Arts
* Master of Professional Accountancy
* Master of Public Administration
* Master of Public Affairs
Schools
* Mesa Preparatory Academy
* Morgan Park Academy
* Mound ...
). This prevents overcharging and damage to the cell.
Sources
*
Battery charging
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