This a great way to charge up cell phone batteries without a cell phone, most cell phone AC adapters will not charge a battery efficiently as they are around 5 volts DC the phone itself has the battery charger inside of it. But I find these batteries have allot of uses around the home or man cave. This Mouse charger is for a Logitech MX Revolution wireless mouse. Which uses a Lithium ion battery.
I claim to be no expert I would not try to charge the mouse and cell battery at the same time. However this setup has worked great for me for recharging these old batteries. I have 1 of these batteries powering my keyboard for the last 30 days and only lost 1 bar of power, I got about 18 hours of power for the brass horse lamp before recharging. And keep in mind that these batteries are not new.
FOR SAFETY REASONS I SUGGEST YOU DON'T ATTEMPT TO DO THIS! UNLESS YOU KNOW AND UNDERSTAND BATTERIES AND BATTERY TYPES ALONG WITH CHARGERS AS I AM BY FAR NO EXPERT AND KNOW JUST ABOUT ENOUGH TO BE DANGEROUS.
Step 1: Tools & Parts
Solder & Flux
3.7 Volt Cell phone battery
USB Cable with male & female ends