Battery Xiaomi Redmi 3: original characteristics, analogues and replacement

The Xiaomi Redmi 3, released in 2016, is still a popular budget smartphone due to its reliability and maintainability. However, over time, even the best battery loses capacity: the phone starts to run out in a few hours, turns off at 20-30% charge or requires constant recharging. If your Redmi 3 becomes “holding” worse than before, the problem is almost certainly the battery.

In this article, we will analyze the original characteristics of the battery, compatible analogues from proven manufacturers, and give a step-by-step instruction on replacing with the nuances of the model.

Original battery Xiaomi Redmi 3: technical specifications

Smartphone Xiaomi Redmi 3 (codename ido) is equipped with a non-removable lithium-polymer battery with the following parameters:

• 🔋 Capacity: 4100 mAh (real capacity after 2-3 years of operation often falls to 2500-3000 mAh).
• 🔌 Voltage: 3.85 V (nominal), up to 4.4 V when fully charged.
• 📏 Sizes: ~68 × 65 × 4.5 mm (exact dimensions depend on lot).
• 🔗 Connector: standard 3-pin Xiaomi connector (not compatible with Redmi batteries) 2/4!).
• 🆔 Article: original number — MBP04 or BM43 (party-wise).

Important: Some Redmi 3 Pro versions had a 4050 mAh battery (BM47), but the 50 mAh difference is not essential for compatibility, the main thing is to check the physical dimensions and connector.

⚠️ Note: Batteries from Redmi 2 or Redmi 4 will not work, they have a different connector and dimensions. Installing an incompatible battery can damage the power controller!

How to check battery wear on Redmi 3

Before you buy a new battery, make sure it's the problem. Here are 3 ways to diagnose:

1. Visual inspection: if the battery is swelling (the phone case is “opened”, the screen has moved), it must be urgently replaced – it is dangerous!
2. Software check: use the AccuBattery app (showing real capacity and wear) Normal wear after 2 years - up to 20%, critical - from 40%.
3. Discharge test: fully charge your phone, turn off Wi-Fi/mobile data, and leave it on standby. If the charge drops to 0% in 8-10 hours, the battery is worn out.

Also pay attention to the symptoms:

• ⚡ Phone shuts down at 15-30% charge (controller cheats system).
• 🔥 Overheating during charging or playing (the battery is running at its limit).
• ⏳ Slow charging (0 to 100% for 3)+ hourly).

Compatible analogues of the original battery

The original Xiaomi batteries for Redmi 3 are difficult to find - they have long been discontinued. However, there are qualitative analogues from proven brands that are not inferior in characteristics:

When choosing an analogue, pay attention to:

• 🔍 Availability of a protection controller (cheap batteries without it quickly fail).
• 📦 Package: the set must have adhesive strips for fixation.
• 🛡️ Guarantee: minimum period of 6 months.

⚠️ Avoid batteries labeled “Ultra Capacity” (e.g., 5000mAh) – they are either a hoax (real capacity below) or won’t fit into the Redmi 3’s body.

💡

Check the seller's reviews on the marketplace before you buy, often under the guise of "original," fakes with a capacity of 2000-2500 mAh are sold.

Step-by-step instructions for replacing the battery

Replacing the battery with the Redmi 3 requires care, but it’s no harder than other Xiaomi smartphones.

• 🔧 Plastic blade or mediator.
• ✂️ Thin screwdriver (cross, 1.5 mm).
• 🔥 Fryer (for softening glue).
• 🧴 Isopropyl alcohol (to clean glue residues).
• 📦 New battery with adhesive strips.

Step 1: Turn off your phone and remove the back cover

1. Turn off Redmi 3 and retrieve it. SIM-map.
2. Heat the edge of the back cover with a hair dryer (30–40 seconds) – this will soften the glue.
3. Carefully tuck the lid with a plastic spatula, starting at the lower corner (near the charging connector).

Step 2: Disconnect the battery plume

1. Unscrew 4 screws that fix the metal plate over the battery.
2. Disconnect the battery connector with a plastic spatula (do not pull the wires!).

Step 3: Remove the old battery

1. Put the battery on the side and pull it up. If the glue is strong, put the alcohol under the battery.
2. Remove the remains of glue from the body with alcohol and a napkin.

Step 4: Install a new battery

1. Stick new strips (come complete) on the body of the phone.
2. Connect the connector and lock the battery, pressing it against the glue.
3. Put the phone back together.

Is the phone off-charging?|Checked battery connector for damage?|Have all the remnants of old glue been removed?|New battery connected correctly (not confused) + and -)?-->

⚠️ Attention: If the phone doesn't turn on after the replacement, check: Density of the battery connector (sometimes it departs during assembly); Polarity of the connection (plus to plus, minus to minus); Integrity of the plume (if damaged, you need to replace the display module).

How to extend the life of a new battery

Even a high-quality battery will last longer if you follow the following simple rules:

• 🔌 Charging: Use the original Xiaomi RAM (5V/2A) Quick Charge is not supported, it will only accelerate wear.
• 🌡️ Temperature: Avoid overheating (do not leave your phone in the sun) and hypothermia (below 0)°C) Optimal range: 10-35°C.
• 🔋 Charge level: try to keep the charge within 20-80%. Full discharge (0%) and overcharging (100%) reduce the resource.
• 📵 Storage: If the phone is not in use for a long time, charge it up to 50% and turn it off.

Myths about batteries that you should not believe:

• ❌ «You need to completely discharge the phone once a month" - this was true for nickel batteries, but not for lithium polymers.
• ❌ «Charging at night spoils the battery" - modern smartphones turn off power at 100%, but it is better not to keep connected for a long time.
• ❌ «The more often to charge, the faster the battery will die" - the number of cycles depends on the depth of the discharge, not on the frequency of connection to the RAM.

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The optimal mode for battery durability is to charge at 20–30%, turn off at 80–90%, and avoid extreme temperatures.

Where to buy a battery for Redmi 3: verified sellers

When buying a battery, it is important to avoid counterfeiting. We recommend the following sites (for 2026):

When buying on marketplaces, pay attention to:

• 📸 Photos of real goods (not stock pictures).
• ⭐ Seller rating (minimum 4.7-4.9).
• 💬 Photo reviews (especially where sizes and connector are shown).

If in doubt, order the battery from the official distributors of the brands Baseus or ZMI - they guarantee originality.

Frequent battery replacement errors and how to avoid them

Even experienced users sometimes make mistakes that damage the phone or cause a new battery to fail quickly.

1. Using metal tools to remove the lid, it scratches the body and can close the contacts. Use only plastic shoulder blades.
2. Heat the battery with a hair dryer, and if you overheat the battery, it can swell or ignite. Heat it for no longer than 30 seconds at minimum power.
3. Putting alcohol on a board can cause corrosion. Apply alcohol only on the glue under the battery.
4. Sticking the battery onto double-sided tape, it'll fall off in a week, and only use the special adhesive strips from the kit.
5. Charging immediately after replacement – let the phone work for 10-15 minutes on the new battery so that the controller adapts.

If the phone is quickly discharged after replacement, check:

• 🔌 Correct connection of the connector (sometimes it is not fully inserted).
• 📱 Battery calibration: fully discharge your phone, then charge to 100% without interruptions.
• 🔄 Power saving settings: Turn off background activity of unnecessary apps in Settings → Battery.

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If the battery runs out in 2-3 hours after replacing it, you probably bought a fake with an understated capacity, return it to the seller and demand a refund or replacement.

FAQ: Answers to Frequent Questions