Review on TalentCell 9V Lithium Ion Battery: High Capacity 500MAh Rechargeable Li-Ion Polymer Battery With Micro USB Charging Port - 1-Pack For Ultimate Convenience by Kyle Costello

Both batteries only charged to 8.4 volts? 😒We shall see how long they last. My experience has been the rechargeable batteries charge a little higher than stated voltage. An one example example is *AA* rechargeable nicad batteries state that they are 1.2volts, with a fully charged maximum of 1.4volts. Most 3.7 lithium ion batteries top off at 4.2 volts on average. These supposed 9 volt batteries don't even reach their stated voltage metering out at 8.4 fully charged? Sending back for replacement to test and see if it's an inferior product.