replacing battery problem

[ayman_1988m]

hello,

i have xperia tx mobile, and its battery runs out very quickly as it is 1700mA only

so i bought a new battery 2450mA to use it instead and replace it with the other one if it runs out.

but the problem is that if the battery level reaches for example 40% and then i replaced it with the other battery, its level is displayed as 40% also

so in this case, if i have both batteries charged by 100%

and i used the first one till 5% , and then i replaced it by the other fully charged one; it will be also with level 5%

any idea or advice to solve this problem?

thank you

[Uliwooly]

That might be a battery compatibility issue, contact the battery manufacturer