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Lenovo IdeaPad 300w Gen 3 L20C3PG0 Replacement Battery 11.52V

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From $83.99 USD $103.99
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Fits Lenovo IdeaPad 300w Gen 3 (82J1001HSP) and replaces OEM part L20C3PG0.
Voltage is 11.52V; 3900mAh capacity delivers 44.93Wh to power the display and processor through a full workday.
Connector slides into the battery slot with a single locking tab; orientation is keyed to prevent reversal.
We charged this cell on a Lenovo test platform and saw the BMS accept the pack without fault codes or early cutoff warnings.
After installation, run a full discharge to hibernation cutoff then charge uninterrupted to 100% — this resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap.
Delivery time

This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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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

🔹 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.

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⚠️ 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.

Voltage

11.52V

Amp

3900mAh

Lenovo 300w Gen 3 / 500w Gen 3 — 11.52V Li-Polymer Replacement Battery (L20C3PG0)

This is an 11.52V, 3900mAh (44.93Wh) Li-Polymer battery for the Lenovo 300w Gen 3 and 500w Gen 3 (Intel) series laptops. It replaces OEM part numbers L20C3PG0, L20D3PG0, L20L3PG0, L20M3PG0, and several 5B11B and SB11B variants. If your original cell no longer holds a charge or the laptop only runs on AC power, this battery matches the original voltage rail and connector..

  • 300w and 500w Gen 3 compatibility: These models share the same three-cell Li-Polymer pack, 11.52V nominal rail, and BMS handshake protocol. The connector and physical footprint are identical across the 82J1 and 82J3 chassis variants covered under this listing.
  • Bench tested on actual hardware: We cycled this cell through charge and discharge on a 300w Gen 3 unit. The BMS accepted the cell without fault codes, the charge controller stepped through CC/CV correctly, and the pack reached full capacity without throttling.
  • 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 on screen after a cell swap.

Why the 300w Gen 3 shuts down at 20–30% after a battery swap

The BIOS fuel gauge IC builds a capacity model against the old cell over many cycles. When a new cell goes in, that model is stale — it expects the voltage-to-capacity curve of the degraded original. The new cell's voltage at 25% state-of-charge looks like 5–10% to the old model, so the BIOS triggers an emergency shutdown even though real capacity remains. Two to three full discharge-recharge cycles let the fuel gauge IC re-learn the new cell's curve and correct the cutoff point.

BIOS showing wrong Wh rating or "unknown battery" after fitting a new cell

The Wh figure the BIOS displays is read from EEPROM data embedded in the battery pack, not calculated live from voltage and current. If the value shown differs from the rated 44.93Wh, the EEPROM on the new cell is reporting its design-rated value under a slightly different chemistry spec than the original. This is a display discrepancy only — it does not affect charge behaviour or actual capacity. To confirm the cell is functioning correctly, check that charge current is flowing and that the pack voltage reads between 11.1V and 12.6V under the BIOS hardware monitor.

Compatible Models

300w Gen 3 82J1001HSP 300w Gen 3 82J10017HV 500w Gen 3 (Intel) 82J3000CMH 300w Gen 3 82J1001YCC 300w Gen 3 82J1000NUK 100e Chromebook Gen 3 82UY0001CZ 100w Gen 3 (AMD) 82HY000JGE 300w Gen 3 82J1000SHV 300w Gen 3 82J1001GMZ 300w Gen 3 82J10016MZ 500w Gen 3 (Intel) 82J3000DHV 300w Gen 3 82J1001WIX 300w Gen 3 82J1000MNS 100e Chromebook Gen 3 82UY0002NS 100w Gen 3 (AMD) 82HY000KAK 300w Gen 3 82J1000RMH 300w Gen 3 82J1001FSP 300w Gen 3 82J10015SC 500w Gen 3 (Intel) 82J3000EAX 300w Gen 3 82J1001VRU 500w Gen 3 (Intel) 82J30003BM 100e Chromebook Gen 3 82UY0003GE 100w Gen 3 (AMD) 82HY000KPB 300w Gen 3 82J1000QSA 300w Gen 3 82J1001EMZ 300w Gen 3 82J10015BM 500w Gen 3 (Intel) 82J3000ERI 300w Gen 3 82J10027CF 500w Gen 3 (Intel) 82J30003RI 100e Chromebook Gen 3 82UY0003UK 100w Gen 3 (AMD) 82HY000LIV 300w Gen 3 82J1001TCK 100e Chromebook Gen 3 82UY0009HA 300w Gen 3 82J10014IU 500w Gen 3 (Intel) 82J3000KAX 300w Gen 3 82J2000QAU 300w Gen 3 82J1001TUK 500w Gen 3 (Intel) 82J30004KG 100w Gen 3 (AMD) 82HY000NBM 100w Gen 3 (AMD) 82HY000BSP 300w Gen 3 82J1001RMB 100e Chromebook Gen 3 82V0000BIA 300w Gen 3 82J10013MZ 500w Gen 3 (Intel) 82J3000KRI 300w Gen 3 82J1001VGE 300w Gen 3 82J1000MFR 500w Gen 3 (Intel) 82J30005FR 100w Gen 3(AMD)82HY000NRI 100w Gen 3 (AMD) 82HY000CMZ 300w Gen 3 82J1001PSA 300w Gen 3 82J10012PG 500w Gen 3 (Intel) 82J40005AU 300w Gen 3 82J1001UPB 300w Gen 3 82J1000GUS 500w Gen 3 (Intel) 82J30005SC 100w Gen 3 (AMD) 82HY000PIV 100w Gen 3 (AMD) 82HY000DHV 300w Gen 3 82J1001UIU 300w Gen 3 82J10011MB 500w Gen 3 (Intel) 82J4000NAU 300w Gen 3 82J1001NRI 300w Gen 3 82J1001DIX 500w Gen 3 (Intel) 82J30006MH 100w Gen 3 (AMD) 82HY000QCF 100w Gen 3 (AMD) 82HY000EAX 300w Gen 3 82J10010HV 100w Gen 3 (AMD) 82HY000BCK 300w Gen 3 82J1001NBM 300w Gen 3 82J1001CPB 500w Gen 3 (Intel) 82J3000BAX 300w Gen 3 82J10025NS 100w Gen 3 (AMD) 82HY000WUS 100w Gen 3 (AMD) 82HY000ERI 300w Gen 3 82J1000YMZ 300w Gen 3 82J1001MIX 300w Gen 3 82J1001AJP 500w Gen 3 (Intel) 82J3000BRI 300w Gen 3 82J10025AK 300w Gen 3 82J1000PPB 100w Gen 3 (AMD) 82J0000RAU 100w Gen 3 (AMD) 82HY000HMB 300w Gen 3 82J1000VJP 300w Gen 3 82J1000PGM 100w Gen 3 (AMD) 82J00011ID 100w Gen 3 (AMD) 82HY000HUK 300w Gen 3 82J1000SNS 300w Gen 3 82J1001GUK 300w Gen 3 82J10016UK 500w Gen 3 (Intel) 82J3000DAT 300w Gen 3 82J1001WRI 300w Gen 3 82J1000NAX 100e Chromebook Gen 3 82UY0002GM 100w Gen 3 (AMD) 82HY000JNS 300w Gen 3 82J1000RSP 300w Gen 3 82J1001GFR 300w Gen 3 82J10016FR 500w Gen 3 (Intel) 82J3000DPG 300w Gen 3 82J1001WAX 300w Gen 3 82J1000MGE 100e Chromebook Gen 3 82UY0002VW 100w Gen 3 (AMD) 82HY000KIU 300w Gen 3 82J1000RCK 300w Gen 3 82J1001EUK 300w Gen 3 82J10015IV 500w Gen 3 (Intel) 82J3000EIX 300w Gen 3 82J1001VIX 500w Gen 3 (Intel) 82J30003KG 100e Chromebook Gen 3 82UY0003PB 100w Gen 3 (AMD) 82HY000LBM 300w Gen 3 82J1001EFR 300w Gen 3 82J10014PB 500w Gen 3 (Intel) 82J3000GCC 300w Gen 3 82J10025SP 300w Gen 3 82J1001UFR 500w Gen 3 (Intel) 82J30004FR 100w Gen 3 (AMD) 82HY000LSC 100w Gen 3 (AMD) 82HY000BMH 300w Gen 3 82J1001RRU 100e Chromebook Gen 3 82V00004AU 300w Gen 3 82J10013UK 500w Gen 3 (Intel) 82J3000KIX 300w Gen 3 82J2000EAU 300w Gen 3 82J1001TMH 500w Gen 3 (Intel) 82J30004SC 100w Gen 3 (AMD) 82HY000NKG 100w Gen 3 (AMD) 82HY000CGM 300w Gen 3 82J1001RCK 300w Gen 3 82J10013FR 500w Gen 3 (Intel) 82J30019US 300w Gen 3 82J1001USP 300w Gen 3 82J1000JSS 500w Gen 3 (Intel) 82J30005MH 100w Gen 3 (AMD) 82HY000PBM 100w Gen 3 (AMD) 82HY000DAT 300w Gen 3 82J1001PKG 300w Gen 3 82J10011SP 500w Gen 3 (Intel) 82J4000FSB 300w Gen 3 82J1001PAT 300w Gen 3 82J1001DRI 500w Gen 3 (Intel) 82J30006GM 100w Gen 3 (AMD) 82HY000PRI 100w Gen 3 (AMD) 82HY000DPG 300w Gen 3 82J10010NS 100w Gen 3 (AMD) 82HY000ACF 300w Gen 3 82J1001NIV 300w Gen 3 82J1001DAX 500w Gen 3 (Intel) 82J30006SP 300w Gen 3 82J2000XBR 100w Gen 3 (AMD) 82HY000UUS 100w Gen 3 (AMD) 82HY000EIX 300w Gen 3 82J1000YUK 300w Gen 3 82J1001MPG 300w Gen 3 82J1001CGM 500w Gen 3 (Intel) 82J3000BIX 300w Gen 3 82J10025GM 300w Gen 3 82J1000QGE 100w Gen 3 (AMD) 82J0000HAU 100w Gen 3 (AMD) 82HY000HFR 300w Gen 3 82J1000YFR 300w Gen 3 82J1001MAX 300w Gen 3 82J10017NS 500w Gen 3 (Intel) 82J3000CGE 300w Gen 3 82J10020EP 300w Gen 3 82J1000TJP 300w Gen 3 82J1001HPB 300w Gen 3 82J10017GE 500w Gen 3 (Intel) 82J3000CNS 300w Gen 3 82J1001XSS 300w Gen 3 82J1000NPG 100e Chromebook Gen 3 82UY0002AD 100w Gen 3 (AMD) 82HY000JHV

Replaces Part Numbers

L20C3PG0 5B11B36308 5B11B36310 5B11B36312 5B11B36319 L20D3PG0 L20L3PG0 L20M3PG0 SB101136306 SB11B36299 SB11B36304

Technical Specifications

Voltage11.52V
Amp Hours3900mAh
Capacity3900mAh
Rate44.93Wh
Net Weight186g /6.56 oz
Gross Weight326g /11.50 oz
Approximate Weight326g /11.50 oz
Dimension 217.30 x 126.00 x 5.30mm

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

My 300w Gen 3 is showing "Battery health: poor" in Lenovo Vantage right after fitting the new battery — is the cell faulty?

No — this is a stale BIOS health record from the old cell, not a fault with the new one. Lenovo Vantage reads health data from the EEPROM log built up over the previous battery's life. Run one full discharge to hibernate-cutoff, then charge uninterrupted to 100% to start a fresh learn cycle. After two to three full cycles, the health status updates to reflect the new cell.

The fuel gauge on my 300w Gen 3 is jumping around — showing 60%, then 45%, then back to 55% within minutes of unplugging

The fuel gauge IC is still calibrating against the new cell's voltage-to-capacity curve. It was tuned to the old degraded cell, so early readings are erratic. This settles after two to three full discharge-recharge cycles. Do not interrupt the first charge — let it run from hibernate-cutoff all the way to 100% without pausing.

My 300w Gen 3 charge stops at 80% and will not go higher — the battery light stays on but capacity is stuck

This is almost always the BIOS charge-limit feature, not a battery fault. Lenovo's firmware includes a battery conservation mode that caps charging at 55% or 80% to reduce cycle wear. Open Lenovo Vantage, go to Power → Battery Settings, and check whether "Battery Conservation Mode" or "Optimized Battery Charging" is enabled. Disabling it allows the cell to charge to 100%.

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Lenovo 300w Gen 3 82J1001HSP Replacement Battery, 11.52V, 3900mAh, Li-Polymer 1

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