4500mAh 3.8V Li-ion Polymer Replacement Battery for Anbernic RG405 Handheld Game Console

Description

Battery model: For Anbernic RG405
Capacity: 4500mAh / 17.1Wh
Rated voltage: 3.8V
Charge limit voltage: 4.35V
Battery type: Li-ion Polymer (Grade A cells)
Compatible with: Anbernic RG405 Handheld Game Console
Package include: 1 x battery
Restore marathon gaming sessions on your Anbernic RG405 with this 4500mAh Li-ion Polymer replacement battery. The RG405 is a premium retro handheld featuring a 4.0-inch IPS touchscreen (480×640 resolution), a powerful Unisoc Tiger T618 octa-core processor (ideal for PlayStation 2, GameCube, and PSP emulation), and a sleek metal alloy body with ergonomic grips. This battery matches the original cell’s dimensions and uses the correct small 2-pin micro connector with the proper cable routing — critical because the RG405’s compact aluminum housing has minimal internal tolerance. Generic batteries often have slightly thicker cells or incorrect connector placement, causing the metal backplate to bulge or the battery to shift during intense gaming. Built with grade A cells and multi-layer safety protection against overcharge, over-discharge, and short circuits. CE, RoHS, and UN38.3 certified.
Why RG405 Battery Replacement Matters — Aluminum Shell Thermal Considerations: The Anbernic RG405’s aluminum alloy shell is a premium feature that enhances durability and provides a premium feel, but it also affects heat dissipation differently than plastic handhelds. The metal body conducts heat away from the processor (T618) efficiently during gaming, but this means the battery is subjected to more consistent thermal transfer from the chassis. After 2-3 years of regular use, the original battery has likely degraded significantly — especially if used for demanding emulation that generates higher temperatures. Common symptoms of battery aging on the RG405 include: the handheld no longer lasting through a full gaming session (original 4500mAh delivered 5-7 hours of PS2/GameCube emulation), the device shutting down at 20-30% battery remaining during intensive gameplay, the battery indicator dropping rapidly from 40% to empty, or the metal body feeling warmer than usual during charging. This replacement battery restores the original 4500mAh capacity and supports the standard 5V/2A charging specification. The RG405’s T618 processor and 4.0-inch screen are power-efficient for their capability, so a fresh battery typically provides 6-8 hours of mixed retro gaming (depending on emulator and brightness), 4-6 hours of heavier PS2/GameCube titles, and excellent standby time of 2-3 weeks. For RG405 owners who have invested in this premium handheld, a battery replacement is a cost-effective way to keep it running for years to come — especially with new custom firmware and emulator updates still being released by the retro community.
Compatibility Note: Fits Anbernic RG405 only — not compatible with RG405M (metal version, uses same battery but verify), RG405V (vertical version), RG353 series, RG505, or other Anbernic models. The RG405 is distinguished by its 4.0-inch IPS touchscreen, horizontal form factor with rounded ergonomic grips, and aluminum alloy shell. Before ordering, please open the back panel (requires a small hex key) to confirm your battery’s connector type and cable routing — the RG405 uses a small 2-pin connector. If your RG405 battery drains quickly or shuts down unexpectedly during gaming, this 4500mAh replacement battery will restore stable power delivery for extended retro gaming sessions.