India’s Biggest Mobile
Battery Brand
India’s Biggest Mobile
Battery Brand

OnePlus BLP657 Battery for OnePlus 6 – 3300mAh

Brand: MT Star, Quality Beyond Comparison

3300mAh replacement battery for the OnePlus 6 (battery model BLP657). BIS certified, original-size fit, made by MT Star.

About this Product

Keep the OnePlus 6 working for years with the MT Star BLP657. This 3300mAh battery is BIS certified and made to the same size and flex connector as the original.

OnePlus BLP657 battery specifications

Battery model BLP657
Compatible devices OnePlus 6
Capacity 3300mAh typical / 3210mAh rated
Nominal voltage 3.85V
Battery type Rechargeable lithium-ion polymer
Certification BIS IS 16046 (Part 2): 2018 and IEC 62133-2: 2017
Series MT Star Premium Series

Signs your OnePlus 6 needs a new battery

  • The battery drains much faster than it used to
  • The phone shuts down suddenly at 10-30% charge
  • The device gets hot while charging or during normal use
  • The battery percentage jumps or drops unexpectedly

Why choose MT Star

Every MT Star Premium Series battery is made to the original size and connector, so it fits like the original. Each cell is BIS certified and tested for safe, stable output, and manufacturing defects are covered by easy returns.

  • BIS certified
  • Original size & connector
  • Easy returns

Frequently asked questions

Which battery does the OnePlus 6 use?

The OnePlus 6 uses the BLP657 battery. The MT Star BLP657 is a direct replacement for it.

What is the capacity of this OnePlus 6 battery?

This MT Star replacement battery has a capacity of 3300mAh.

Is the MT Star BLP657 battery safe?

Yes. It's certified under BIS IS 16046 (Part 2): 2018 and IEC 62133-2: 2017 and is made to the original size and connector.

Can I buy MT Star batteries in bulk?

Yes. MT Star supplies distributors and repair shops across India. Contact us to become a distributor.

How do I know my OnePlus 6 battery needs replacing?

Common signs are fast draining, sudden shutdowns at 10-30%, heating while charging, or a swollen battery lifting the back panel.