Original ZTE Battery Li3949T44P8h945754 For ZTE Blade A2 Plus BV0730 – with a unique 45 days replacement warranty for manufacturing defects. All our products are thoroughly tested but you might run into some unforeseen problems if you do not use an expert technician. So, we strongly recommend servicing under expert technical supervision. Self-installation without required skills can be dangerous to the screen/device.  New Lithium Ion batteries must be fully charged and fully discharged 2 to 3 times, before being fully conditioned. Please remember that a new Lithium-Ion battery’s full performance and longevity is only achieved after 2 to 3 complete charge and discharge cycles. After you go through 2 to 3 cycles, you will never have to condition your battery again!