The MS Lumia 640 xl comes with a .75A charger.

[Windows Central Question]

Will using the 1.2A charger (from Nokia) or 1.8A charger (from BB Playbook) harm the Lumia battery?

 

[Maurizio Troso]

Will using the 1.2A charger (from Nokia) or 1.8A charger (from BB Playbook) harm the Lumia battery?

IMHO, better not overpass 1 A too much. Use the 1.2 A only and check phone temp sometimes

 

[Chintan Gohel]

Will using the 1.2A charger (from Nokia) or 1.8A charger (from BB Playbook) harm the Lumia battery?

the 1.2A is okay and these days phones have internal safeties so that there's low risk of damaging the phone

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