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804050 2000mAh 3.7V Li-ion replacement battery for Miyoo Mini with 1.25mm JST connector, front view showing battery label

804050 2000mAh 3.7V Li-ion Battery with JST 1.25mm Plug for Miyoo Mini

Original price was: $18.99.Current price is: $14.99.

🔘 804050 2000mAh 3.7V | 🔋 Li-ion with JST 1.25mm Plug | 📱 Compatible with Miyoo Mini

8 in stock

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SKU: for Miyoo Mini Category: Tags: , ,
📦 Shipping, Warranty & After-Sales Information (Click to expand ▼)

✅ Why Our Warranty Stands Out

Unlike marketplace sellers with short buyer protection windows, we handle claims directly — no automated disputes, no endless back-and-forth.

Compare✅ Qingsm Tech⚠️ eBay / AliExpress
Warranty Period90 days from delivery15-30 days from order confirmation
When It Starts📦 Upon delivery⚠️ Upon order confirmation (even before you receive it)
Claims HandlingWe do it directly — email usAutomated dispute system, seller dependent
After Window ExpiresStill can contact us for supportNo recourse, seller can ignore you

🔋 90-day warranty is the industry standard for replacement batteries. Batteries naturally lose capacity over time — this normal wear is not covered. Warranty applies to manufacturing defects only.

📦 Shipping Cost & Delivery Time (Economy Shipping from China)

📦 Note: Batteries are classified as hazardous goods and must be shipped via specialized channels, which may take slightly longer than standard couriers. Delivery times are estimates and may be affected by customs, weather, or other unforeseen circumstances. If your country is not listed in the table below, we are currently unable to ship batteries to that destination.

DestinationFreight (USD)Est. Delivery Time
United States$7.808–15 days
Canada$6.8018–30 days
Mexico$10.0030–60 days
Germany, France, United Kingdom, Greece$6.5018–30 days
Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Hungary, Ireland, Italy, Luxembourg, Netherlands, Norway, Poland, Portugal, Slovakia, Spain, Sweden, Switzerland$8.0018–30 days
Croatia, Finland, Lithuania, Latvia, Slovenia$8.0030–50 days
Bulgaria, Romania$14.0030–50 days
South Korea, Japan, Australia, New Zealand, Israel, Malaysia, Singapore, Thailand, Philippines, Kazakhstan$7.5018–30 days
United Arab Emirates, Saudi Arabia, Vietnam, Chile, Peru, Colombia, Brazil$18.0025–60 days

🇧🇷 Note for Brazil: Brazilian customs can occasionally cause delays of up to 80 days or more. And please indicate the recipient's CPF, as it is required for Brazilian customs and shipping. Thanks! We appreciate your understanding.

🇪🇺 Note for EU countries: Due to new EU customs regulations effective July 1, 2026, a flat tariff fee of $6.00 (approx. €5.20) applies to shipments to EU countries. This fee covers customs tariff, handling, and payment processing costs, and will be added at checkout. Thank you for your understanding.

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Description

✅ Condition: Brand New – Never used, factory‑tested quality

✅ CE / RoHS / UN38.3 Certified

✅ Built‑in Overcharge / Over‑discharge / Short Circuit Protection

✅ 90‑Day Warranty from delivery – Longer coverage than major platforms

✅ Ships in 3‑7 days with tracking

🛡️ Shipping Protection Available at Checkout

✅ PayPal Buyer Protection included

⚠️ Low Stock Alert: Only 8 left in stock. Order now to avoid waiting.

Battery model: 804050 (8×40×50mm size)
Capacity: 2000mAh / 7.4Wh
Rated voltage: 3.7V
Charge limit voltage: 4.2V
Battery type: Li-ion / Li-Polymer
JST Connector: 1.25mm 2-pin plug
Compatible with: Miyoo Mini handheld console
Package include: 1 x battery
Restore the battery life of your Miyoo Mini retro handheld console with this 804050 2000mAh replacement battery. This Li-ion battery delivers a reliable 2000mAh capacity, providing extended gameplay for your classic gaming sessions. For reference, third‑party retailers sell this battery for approximately $8 to $15.
Built with Grade A Li-ion cells and multi‑layer safety protection against overcharge, over‑discharge, short circuit, and overcurrent. The battery is user‑replaceable — no soldering required. Simply open the back cover, disconnect the old battery‘s 1.25mm JST connector, and plug in the new one. For best results, use a 5V/1A USB charger. The device charges fully in approximately 2 hours. With a cycle life of 500+ full charge cycles, this replacement battery is designed for long-term durability.
Compatibility Note: Please power down your device, open the battery compartment, and check your original battery label before ordering. Verify that your original battery has the same dimensions (approx. 8×40×50mm) and uses a 1.25mm JST 2-pin connector. The handheld has no official IP water resistance rating, so water seal maintenance is not a concern after replacement.
Battery Care Tips: Avoid full discharge — recharge when battery level drops below 20%. Do not expose to high temperatures or direct sunlight. New batteries require 3-5 full charge cycles to reach optimal capacity. Use a standard 5V/1A USB charger (do not use fast chargers). If you don’t use the device for a long time, store it at approximately 40%-60% charge in a cool, dry place. If you notice swelling or overheating, stop use immediately and dispose of properly at a designated battery recycling center.

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Frequently Asked Questions

This 804050 battery is designed for the Miyoo Mini handheld console. Please open the battery compartment of your Miyoo Mini and verify that your original battery measures approximately 8×40×50mm and uses a 1.25mm JST 2-pin connector. If your original battery matches these specifications, this replacement will fit. If your device uses a different battery size or connector, this battery may not be compatible. Always check your original battery label before ordering.

The 804050 2000mAh 3.7V battery has a typical capacity of 2000mAh (7.4Wh) and a rated voltage of 3.7V. Charge limit voltage is 4.2V. The battery provides up to 5 hours of gameplay on a full charge (depending on screen brightness and emulated platform). Charging time is approximately 2 hours using a standard 5V/1A USB charger. The console does not support fast charging. This 804050 Li-ion battery is built with Grade A cells and is CE, RoHS, and UN38.3 certified. With a cycle life of 500+ full charge cycles, this replacement battery is designed for long-term durability. For best results, always use a 5V/1A USB charger.

Installing the 804050 battery in Miyoo Mini is simple and requires no soldering. First, turn off the console. Locate the battery compartment on the back of the Miyoo Mini — the cover has a small notch. Gently lift it open. Disconnect the old battery by gently pulling the 1.25mm JST connector upward (use your fingernail or a plastic spudger; do not pull on the wires). The battery is not glued in place. Insert the new 804050 battery into the compartment, ensuring the connector is fully seated and the wires are not pinched. Close the battery cover until it snaps securely. The console has no IP water resistance rating, so no special sealing is required. Always dispose of old batteries properly at a designated battery recycling center. For calibration, fully charge the console for 2 hours before first use.

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This battery is in stock and ready to ship within 3-7 days. 90-day warranty included.

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