3.7 volts battery pack

I have for sale four individual 3.7 V Battery packs that are used for device replacement & repairs with small devices specifically. Can be wired in any orientation & or configuration that you like either parallel or series to make 12 V. When they're fully charged in series, you can get a maximum voltage of 13.9 V. The price is negotiable. Size is 1 - 1/8th inch X 5/8 inch each. Batteries have not been used. They are fully rechargeable. They have been installed and charged fully once. They are like new. Call or text me at 260 218 3536 they each have overcharge protection, discharge protection and reverse polarity protection built in as you can see in the photos.