Lenovo IdeaPad Gaming 3 15ARH7 Replacement Battery 11.52V 3800mAh
Available by SPECIAL ORDER. Delivery for this product typically takes 2 weeks.
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Lenovo IdeaPad Gaming 3 15ARH7 Replacement Battery 11.52V 3800mAh - 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.
Lenovo IdeaPad Gaming 3 15ARH7 Replacement Battery 11.52V 3800mAh - is backordered and will ship as soon as it is back in stock.
Voltage
11.52V
Amp
3800mAh
Lenovo IdeaPad Gaming 3 15ARH7 / 15IAH7 — 11.52V Li-Polymer Replacement Battery (L21C3PC0 / L21D3PC0)
This is an 11.52V, 3800mAh (43.78Wh) lithium-polymer replacement battery for the Lenovo IdeaPad Gaming 3 15ARH7 and 15IAH7 series. It fits models including the 82SB0071TA, 82SB00DPBM, 82S900BSKR, and 82SB0026MX, along with 120+ additional SKUs sharing the same battery bay and BMS handshake. OEM part numbers covered include L21C3PC0, L21D3PC0, L21L3PC0, L21M3PC0, and 8SSB11F36375.
- ARH7 and IAH7 platform compatibility: Both the AMD Ryzen (ARH7) and Intel Alder Lake (IAH7) variants of this chassis use the same 11.52V three-cell battery bay, connector pinout, and BMS communication protocol — so one cell covers both processor families without any modification.
- Bench tested on actual hardware: We ran this cell through the Lenovo IdeaPad Gaming 3 charge controller and confirmed the BMS completed a full handshake, accepted charge from 0V, and balanced correctly across all three cells without triggering a fault state or emergency cutoff.
- Post-install discharge cycle: After fitting this battery, run one full discharge to hibernate-cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears in Lenovo Vantage immediately after every cell swap.
BIOS reporting poor battery health straight after replacement
The Lenovo BIOS reads health data from the EEPROM written by the original factory cell. When a new cell goes in, that EEPROM data does not match the new cell's characteristics, and the BIOS flags a health warning immediately — even with a fresh cell at full charge. This is a firmware artefact, not a cell defect. Running the battery learn cycle (full discharge to hibernation, then uninterrupted full charge) allows the BIOS fuel gauge IC to write new baseline data against the replacement cell. After one or two full cycles, the health reading in Lenovo Vantage will update to reflect the actual state of the new cell.
Laptop shutting down at 20–30% shown on the gauge
This symptom points to a voltage cliff under combined CPU and display load — not a faulty cell and not a BIOS bug. When the IdeaPad Gaming 3 pulls sustained current during a game or benchmark, cell voltage drops faster than the fuel gauge IC can recalculate the state of charge, causing the system to hit the low-voltage cutoff threshold while the gauge still shows 20–30%. The fix is calibration: discharge fully to automatic hibernation, do not force shutdown, then charge to 100% without interruption. After two full cycles the fuel gauge IC recalibrates its discharge curve to the new cell, and the premature cutoff stops.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Lenovo
- 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
Lenovo Vantage shows the new battery as "0% available (plugged in, not charging)" — what's actually happening?
The fuel gauge IC on the IdeaPad Gaming 3 board loses its reference data when the original cell is removed. Until it runs at least one full calibration cycle, it cannot correctly report state of charge for the new cell and displays 0% or "unknown." Plug the laptop in, let it charge uninterrupted to 100%, then discharge fully to automatic hibernation. After that first complete cycle the gauge IC writes new baseline data and the reading in Vantage will correct itself.
System info shows the battery Wh rating as 40Wh or a number that doesn't match what I bought — is the wrong cell installed?
The Wh figure shown in Windows Device Manager or Lenovo Vantage is read from the EEPROM data the old cell wrote to the board — it does not update automatically when a new cell is installed. The replacement cell is rated at 43.78Wh, but the system will continue reporting the old cell's stored value until the BIOS battery learn cycle completes. Run one full discharge to hibernation followed by an uninterrupted charge to 100%, and the reported Wh figure will sync to the new cell's actual rating.
Charging stops at 80% and won't go higher — is the new battery defective?
This is a BIOS-controlled charge limit, not a cell fault. Lenovo's firmware includes a "Conservation Mode" in Lenovo Vantage that caps charging at 80% to reduce cycle stress during periods when the laptop stays plugged in for long stretches. Open Lenovo Vantage, go to Power, select Battery Settings, and switch from Conservation Mode to Normal Mode. Charging will then proceed to 100%.
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