[mnbvczxc]

The two most critical bits of information with these batteries are that the voltage must be the same . . . . 3.6Vish and the external dimensions must be a match for obvious reasons. The amperage of 1230mah VS 1500mah will give you the extra life that you are seaking. Gee that sounds like a line from some movie?! Anyhow, these batteries also have an onboard IC chip that among other things will shut the battery down if a power spike should occur so I suspect that this little chip in the battery must also send it's coding for what it is, probably hopefully trying to stop the leaked profits due to 2nd source battery manufacturers, but dunno.