Can we use a different battery in the iNew v3?

[yamontv]

No worries about your language, is not my native language too.
I am an electronic technician and I also know some things about batteries and I read a lot when the 4,35v batteries introduced a couple years ago by samsung, lg and I don't remember the other brand.
The nominal voltage it's just the average between the maximum and minimum limits. More or less it is just a number. So by increasing the maximum, you increase the nominal voltage.
The point is that the 4,2v have healthier lives than the 4,35. Probably this will be changed during years cause technology always developing very fast.
The chemistry is the same at both of these batteries by they manage to increase the voltage doing some "tricks".
In conclusion iNew's battery has a rate of 4,35 but our phone is charging it up to 4,2.
If you charge it (on a external charger) up to 4,35 you will get more power but you get less charging cycles.

We are talking about the same things. Inew phone doesn't fully charge it's original battery because it's charging voltage is not appropriate (but I thought that it is fixed in 1.0.4 ROM). Otherwise if 2 batteries have the same rated capacity, battery with lower nominal voltage physicaly have more chemistry volume and capacity. Because additional capacity in bigger voltage batteries is boosted by increasing max charging voltage.
So if phone has charging voltage suited for 3.7V batteries it is better to use 3.7V batteries despite of the fact that 2 batteries may have the same capacity value.
But it's not mean that we can't use batteries with 3.8V nominal voltage in phones where nominal voltage is 3.7V. In this case battery will serve longer with a bit less capacity.
But if we have opposite sittuation (phone with 3.8V and battery with 3.7), it may cause fast battery degradation and even it's explosion In most batteries that I see inside there was only undervoltage protection and short circuit protection controller. So if you give more than 4.35V you will damage almost any battery. And if you give 4.35 to 4.2 battery you will damage it too but after several recharging cycles.