Anbernic RG556 Compatible Battery 3.8V 5400mAh FL806475
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Anbernic RG556 Compatible Battery 3.8V 5400mAh FL806475 - is backordered and will ship as soon as it is back in stock.
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Battery Care Tips
Battery Care Tips
🔹 Getting Started
Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.
🔹 Keep It Healthy
Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.
Delivery and Shipping
Delivery and Shipping
🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.
Disclaimer
Disclaimer
⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.
🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.
Anbernic RG556 Compatible Battery 3.8V 5400mAh FL806475 - is backordered and will ship as soon as it is back in stock.
Voltage
3.8V
Amp
5400mAh
Anbernic RG556 — 3.8V Li-Polymer Replacement Battery (FL806475)
This 3.8V, 5400mAh Li-Polymer cell replaces the original FL806475 battery in the Anbernic RG556 handheld gaming console. It matches the OEM voltage, capacity, and connector so the existing charge circuit and fuel gauge have what they need to operate. Dimensions are 71.50 x 61.50 x 7.00mm — measure your original before fitting if the shell has been opened before.
- RG556 fitment: The RG556 uses a single-cell Li-Polymer pack with a proprietary flex connector that carries both power and fuel gauge data. This cell matches that pinout. No connector adapters or re-wiring required.
- Bench tested on actual hardware: We cycled the cell through charge and discharge on the RG556 mainboard. The onboard BMS accepted the charge handshake without fault flags, and the fuel gauge IC tracked state-of-charge through a full cycle without interruption.
- First-cycle fuel gauge calibration: After fitting, run one complete play session to automatic low-battery shutoff before recharging. The RG556 fuel gauge IC sets its empty reference point against the first full discharge of a new cell — skipping this step causes the percentage readout to jump or stall for several sessions.
Why the RG556 fuel gauge reads inaccurate after a cell swap
The RG556 uses a coulomb-counting fuel gauge IC that builds a discharge model over time. When a new cell goes in, the IC still holds the old cell's learned curve in memory. Until it runs a full discharge cycle on the new cell, it maps current draw against the wrong baseline. This causes the percentage indicator to jump forward or drop suddenly at certain charge levels. One complete discharge to automatic shutoff followed by a full charge resets the reference point and the gauge tracks accurately from there.
RG556 showing lower play time than expected after battery replacement
Fresh Li-Polymer cells do not deliver their full rated capacity on the first charge cycle. Internal resistance is slightly elevated out of the packaging, and the electrolyte needs several charge-discharge cycles to fully saturate the electrode surfaces. The RG556's 5400mAh rating is reached after three to five full cycles, not on day one. Charge fully, play to automatic shutoff, and repeat — capacity increases measurably with each pass until it stabilises at the rated figure.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Anbernic
- Manufacturer: CS
- Series: Standard
- Color: Black
- Product Type: Li-Polymer
- Battery Type: Li-Polymer
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
My RG556 shuts down suddenly but the battery percentage still shows 20–30% — why?
This is voltage sag under load, not a fuel gauge error. When the RG556 runs demanding emulation with the display at full brightness, the cell's voltage drops sharply under peak draw. If the instantaneous voltage dips below the BMS protection threshold, the board cuts power even though the coulomb counter still shows charge remaining. A new cell showing this behaviour before three full conditioning cycles have completed is normal — internal resistance drops with each cycle and the sag reduces. After five cycles, if the shutoff point still sits above 15%, check that the battery connector is fully seated, as a partial connection increases resistance at the contact point.
The RG556 is only charging at a trickle after fitting the new battery — is the charge IC limiting it?
Yes. The RG556 charge IC applies a conservative pre-charge current when it sees a cell starting from a low state of charge, which is typical for a new battery shipped in a partially discharged state. This is a protection behaviour, not a fault. Once the cell voltage climbs above 3.0V, the IC switches to full constant-current charge automatically. Leave the console on charge without interruption for the first session and the rate will increase within 10–15 minutes as the cell voltage rises past the pre-charge threshold.
The battery percentage on my RG556 jumps from 60% straight to 15% with no warning — what causes that?
The fuel gauge IC is reading against a discharge curve that no longer matches the new cell. After a cell swap, the IC's stored model reflects the old battery's chemistry and wear profile. When the new cell's actual voltage at a given charge level differs from what the model predicts, the percentage snaps to correct itself rather than stepping down smoothly. Run one full discharge to automatic shutoff followed by a complete charge to 100% — this gives the IC a full curve to calibrate against. After two full cycles the readout should track without sudden jumps.
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