MELASTA 9V Lithium Battery - 4 Pack 9V Battery Rechargeable USB

I have used this batteries with great results for guitar effects pedals, digital multimeter, fire alarms. So only low current draw appliances but they last for long and the charging time is really short via USB terminal. I also shorted the plus/minus terminals a couple of time ant the batteries still working.

These s batteries worked as described.

They don't really hold a charge very well. They act more like a cheap capacitor than a battery. I would not say they are better.

Overall I would recommend the batteries. Easy to charge directly. Like the LEDs that show the battery charge level. Don't last as long as regular batteries but rechargable makes up for this.

I use this on my gate keypad in order to keep it charged. I added a 4 by 4 solar panel with USB connector and because the battery doesn't overcharge I don't worry about it.

I like most the fact that they are rechargeable AND via USB connection. Wonderful idea.

Excelente calidad

Using these for a wireless lapel mic. They seem to work great.