Alkaline battery Protection – Automatically recognizes an Alkaline battery and Prevents Charger operation and harm. Battery Polarity Reversal Protection – Prevents Charger injury and operation in case a battery is inserted into the MH-C808M backwards. My FRS walkie-talkies quit when AAA batteries get to about 1.2v, so recargeables might only last for minutes. I’m attempting enloop 750 mAh (tested @ 1.33) and pro 950 mAh(1.31). A small digicam podium, they’ve been invaluable as a mini hassle mild. All Panasonic eneloop are made in China and other nations but not Japan.