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

Vivo B-O5 Battery for Vivo Y12s, Y20, Y20i, Y20G – 4920mAh

Brand: MT Star, Quality Beyond Comparison

4920mAh replacement battery for the Vivo Y12s, Y20, Y20i & more (battery model B-O5). BIS certified, original-size fit, made by MT Star.

About this Product

The MT Star B-O5 is a 4920mAh replacement battery for the Vivo Y12s, Vivo Y20 and Vivo Y20i and more. It brings back the all-day battery life the phones were bought for.

Compatible models

  • Vivo Y12s
  • Vivo Y20
  • Vivo Y20i
  • Vivo Y20G
  • Vivo Y20s

Vivo B-O5 battery specifications

Battery model B-O5
Compatible devices Vivo Y12s, Vivo Y20, Vivo Y20i, Vivo Y20G, Vivo Y20s
Capacity 4920mAh
Nominal voltage 3.85V
Charge voltage limit 4.4V
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 Vivo Y12s needs a new battery

  • The phone only works while plugged into the charger
  • Charging takes far longer than it did when the device was new
  • The battery drains much faster than it used to
  • The phone shuts down suddenly at 10-30% charge

Why choose MT Star

Safety comes first with MT Star. Our batteries are certified to IS 16046 and IEC 62133-2, built to the original dimensions, and backed by our support team and easy returns for manufacturing defects.

  • BIS certified
  • Original size & connector
  • Easy returns

Frequently asked questions

Which phones does the B-O5 battery fit?

The MT Star B-O5 battery fits the Vivo Y12s, Vivo Y20, Vivo Y20i, Vivo Y20G and Vivo Y20s.

What is the capacity of this Vivo Y12s battery?

This MT Star replacement battery has a capacity of 4920mAh.

Is the MT Star B-O5 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.

How do I know my Vivo Y12s battery needs replacing?

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

Should a technician install this battery?

Yes. For phones with glued backs we recommend fitting by a trained mobile repair technician.