... -specific:-35°C~55°C(suffix I)Control TypeCharging: PWM pulse width modulation, Output: Constant powerFunctionTimer and light controlledFit forSolar ... damage to any component, not burning insurance.5, Tandem PWM charging main circuit, can reduce the 50% loss of ... , charging efficiency is 3% - 6% higher than non-PWM, increased the using power time. Ascending charging after overdischarging restore ...