Mi 6A Battery Model Name (BN37): Specifications, Price in India & How to Buy a Genuine Replacement

If your Redmi 6A is shutting off at 20% or swelling near the camera bump, you need one number before you buy anything: BN37. That’s the official Xiaomi battery model for the Mi 6A / Redmi 6A. Everything else mAh rating, voltage, where to buy it genuine builds on that single fact.

Mi 6A battery model name is BN37. It’s a 3000mAh Li-Polymer battery rated at 3.85V, designed specifically for the Redmi 6A (and shared with the Redmi 6 and a few Redmi Y-series variants). Any listing that doesn’t mention BN37 is not the correct part for your phone.

Mi 6A battery model name is BN37 (3000mAh). Get full specs, genuine vs duplicate tips, price in India, and step-by-step replacement guide. This guide covers the full spec sheet, how to spot a fake before it kills your phone’s charging IC, what the battery actually costs in India right now, and how replacement works DIY or otherwise.

Mi 6A / Redmi 6A Battery Specifications (BN37)

Here’s the exact spec sheet, cross-checked against the phone’s original GSMArena review data.

According to GSMArena’s official review[1]✔ of the device, the Redmi 6A shipped with a non-removable 3000mAh battery supporting 5W charging, which matches what every legitimate BN37 listing states. 

One quick side note: BN37 is not the same part as BN46 (used in Redmi 7 and Note 6/8). They get mixed up constantly in marketplace listings because both start with “BN,” and mixing them up means your new battery simply won’t fit the connector.

That’s your benchmark. If a seller lists BN37 at 3500mAh or higher, be skeptical you’re likely looking at an inflated “high copy” number, not a genuine cell.

Genuine vs. Duplicate BN37 Battery: How to Tell the Difference

The used-phone spare parts market in India is flooded with “compatible” batteries that never touch Xiaomi’s actual supply chain. Most won’t explode. Most just won’t last.

What most guides skip is this a genuine or OEM-grade BN37 uses the correct IC chip that talks to your phone’s power management system. A cheap duplicate often skips this chip entirely. Your phone still charges. It just won’t report battery health accurately, and it’ll degrade faster.

A few real checks before you buy:

• Look for the exact model print — “BN37” stamped on the cell, not just written in the product title.
• Compare declared capacity to 3000mAh — anything significantly higher (3800mAh+) on an unbranded seller is a red flag for mislabeling.
• Check seller ratings and return policy specifically for batteries — most legit sellers offer a short checking window (7–15 days) precisely because bad cells fail early.

I’ve seen conflicting claims across marketplace listings — some sellers market 2900mAh “full capacity” BN37 units, others sell 3000mAh. My read: both are within normal tolerance for a replacement cell, but anything claiming above the original 3000mAh spec deserves a second look before you pay.

Mi 6A Battery Price in India (2026)

Genuine BN37 batteries from official channels typically cost more than third-party marketplace listings, which range widely based on brand and warranty length. 

Local mobile repair markets often quote a flat “battery + fitting” price without specifying which BN37 variant they’re using always ask them to show the part before installation.

If you want zero guesswork, Xiaomi’s own service center locator on mi.com lets you find an authorized center near you where BN37 replacement uses verified parts.

How to Replace the Mi 6A Battery

To replace a Redmi 6A battery, follow these steps:

• Power off the phone and remove the SIM tray.
• Heat the back panel edges gently to loosen the adhesive.
• Pry open the back cover with a plastic tool, not metal.
• Disconnect the battery connector before removing the old cell.
• Fit the new BN37, reconnect, and seal the back panel.

Realistically? Unless you’ve opened a phone before, this is a 15-minute job for a technician and a 45-minute stress test for everyone else. The adhesive on the Redmi 6A’s back panel is not forgiving.

Some experts argue DIY replacement saves money and is worth learning. That’s valid if you’re comfortable with basic electronics and have the right tools. But if this is your only phone and you can’t afford a cracked back panel, a local technician charging a small fitting fee is the safer call.

Common Mi 6A Battery Problems and Fixes

Users who’ve dealt with an aging Redmi 6A often report the same three issues, in this order: sudden shutdowns above 15%, slow charging that used to be fast, and visible swelling near the camera module.

Swelling is the one that matters most stop using the phone immediately if you notice the back panel bulging. A swollen Li-Polymer cell is a fire risk, not just a performance issue. This isn’t a scare tactic; it’s standard battery safety guidance, and it applies to any lithium battery, not just Xiaomi’s.

Frequently Asked Questions