They work well
"When they go dead they'll go dead suddenly, and will read exactly 0. 00 volts (as you'll discover if you have a voltmeter to test them). Don't let that fool you. The sudden 0. 00 volt reading is normal behavior for lithium batteries. Just put the batteries back in the charger for two or three hours and they'll be fully charged again, and show 1. 51 volts, or close to that. They've been working well for me for over a year."






