Top critical review
Holding charge, decent deplete and charge frequencies, no timer control, no automatic cutoff.
18 April 2017
I hope to write a long term review. Right now after about a month of usage the battery is working well, holding charge enough to power my camcorders, walkmans, and world band tuners for weeks. The charge cycle frequency is over three weeks with charge depleting as per usage. The charger seems to be working well to though heats up a bit, though I guess that has more to do with the ambient 45 degree summer heat right now.
I know some other sites are offering this at a lower price of INR 500 or less for 4 2100 mah battery and including a charger, but I chose Amazon even though they were higher priced at INR 600 just to be sure that I get the genuine item, which I seem to have. I remember when I used to buy these in the eighties and nineties at a much lower priced point to power my walkmans and cameras, but I guess those days are for memories now. My feedback to the manufacturer of this product is that include a timing circuit inside the charger like some Sony charges do which cut off charge voltage after a preset time of say 12 hours, as a slower charge and deplete rate extends battery life, and with that feature that Sony chargers offer but not Envie ECR 20, one needn't worry about having accidently forgotten the charger attached to the power terminal and returning home to find swollen batteries.