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Lenovo L421 Battery for ThinkPad E40, E420 and E50 Series

208 in stock

SKU: LN-L421

Original price was: $501.99.Current price is: $250.99.

Replacement battery for Lenovo ThinkPad E420, E520 and Edge series laptops.

  • ๐Ÿ”‹ Voltage: 14.8V ยท Capacity: 41.04Wh / 7800mAh ยท Type: 8-Cell Li-ion
  • ๐Ÿ”„ Replaces: 0578-47B, 05787UJ, 05787VJ, 05787WJ, 05787XJ, 42T4235, 42T4702, 42T4703 โ€” view the complete list in the description below

208 in stock

  • Fast & Free Shipping
  • Money-Back Guarantee
  • 12 Months Warranty
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Description

The Lenovo L421 delivers the power specifications that demanding users require for their ThinkPad E420 laptops. This 14.8V 41.04Wh battery features 8-cell Li-ion technology designed specifically for ThinkPad E-series and Edge models. Professional users rely on this 7800mAh capacity replacement for their ThinkPad E520, ThinkPad Edge 14, and other compatible models. The precise voltage regulation ensures consistent performance across all 30 supported ThinkPad configurations.


Technical Specifications

Brand Lenovo Compatible
Voltage 14.8V
Capacity (Wh) 41.04Wh
Capacity (mAh) 7800mAh
Cells 8-Cell
Chemistry Li-ion
Colour Black
Warranty 1 Year

Key Features

  • 8-cell design delivers higher capacity for demanding workloads
  • Li-ion cells with built-in protection circuitry for safe charging

Compatible Part Numbers

0578-47B
05787UJ
05787VJ
05787WJ
05787XJ
42T4235
42T4702
42T4703
42T4708
42T4714
42T4731
42T4733
42T4737
42T4751
42T4752
42T4753
42T4755
42T4756
42T4757
42T4763
42T4764
42T4791
42T4793
42T4794
42T4795
42T4796
42T4797
42T4798
42T4803
42T4817
42T4819
42T4844
42T4845
42T4846
42T4847
42T4848
42T4849
42T4850
42T4851
42T4852
42T4911
42T4912
45N136
45N137
45N138
45N139
51J0499
51J0500
57Y4185
57Y4186
57Y4545
7.8AH
ASM42T4703
ASM42T4752
ASM42T4756
ASM42T4796
E40
E420
E425
E50
E520
E525
FRU42T4702
FRU42T4793
FRU42T4795
FRU42T4797
FRU45N1001
L410
L412
L420
L421
L430
L510
L512
L520
L530
SL410
SL410K
SL430
SL510
T410
T420
T420S
T430
T510
T520
T520I
T530
W510
W520
W530
W530I

Compatible Laptop Models

Lenovo ThinkPad Series

ThinkPad E40
ThinkPad E420
ThinkPad E425
ThinkPad E50
ThinkPad E520
ThinkPad E525
ThinkPad Edge 14
ThinkPad Edge 15
ThinkPad L410
ThinkPad L412
ThinkPad L420
ThinkPad L421
ThinkPad L430
ThinkPad L510
ThinkPad L512
ThinkPad L520
ThinkPad L530
ThinkPad SL410K
ThinkPad SL430
ThinkPad SL510K
ThinkPad SL530
ThinkPad T410i
ThinkPad T420i
ThinkPad T430i
ThinkPad T510i
ThinkPad T520i
ThinkPad T530i
ThinkPad W510
ThinkPad W520
ThinkPad W530i

Additional models may be supported. Contact cs@usabatteries.com to check compatibility.

โš ๏ธ Safety Notice: Lithium batteries can cause fire or injury if misused. Do not leave on charge unattended or overnight. Avoid exposure to heat or water, and discontinue use if the battery swells or leaks.
Additional information
Voltage14.8V
Capacity41.04Wh
Cells8-Cell
ChemistryLi-ion
Compatible Part Numbers0578-47B, 05787UJ, 05787VJ, 05787WJ, 05787XJ, 42T4235, 42T4702, 42T4703, 42T4708, 42T4714, 42T4731, 42T4733, 42T4737, 42T4751, 42T4752, 42T4753, 42T4755, 42T4756, 42T4757, 42T4763, 42T4764, 42T4791, 42T4793, 42T4794, 42T4795, 42T4796, 42T4797, 42T4798, 42T4803, 42T4817, 42T4819, 42T4844, 42T4845, 42T4846, 42T4847, 42T4848, 42T4849, 42T4850, 42T4851, 42T4852, 42T4911, 42T4912, 45N136, 45N137, 45N138, 45N139, 51J0499, 51J0500, 57Y4185, 57Y4186, 57Y4545, 7.8AH, ASM42T4703, ASM42T4752, ASM42T4756, ASM42T4796, E40, E420, E425, E50, E520, E525, FRU42T4702, FRU42T4793, FRU42T4795, FRU42T4797, FRU45N1001, L410, L412, L420, L421, L430, L510, L512, L520, L530, SL410, SL410K, SL430, SL510, T410, T420, T420S, T430, T510, T520, T520I, T530, W510, W520, W530, W530I
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Shipping FAQ

At USA Batteries, we are committed to providing fast, free, and reliable shipping on every order. Below, youโ€™ll find detailed information about our shipping process, delivery timelines, carriers, and what to do if your order experiences an issue.


๐Ÿšš What is the cost of shipping?

Shipping is completely free on all orders โ€” no minimum purchase requirements, no hidden fees, and no surprise charges at checkout. We believe in transparent pricing so you can shop with confidence.


๐Ÿ“ฌ Which shipping carriers do we use?

Most orders are shipped via USPS (United States Postal Service), which provides fast and affordable nationwide delivery. For large, heavy, or bulk orders, we may use FedEx or UPS to ensure safe and efficient handling.

Please Note: Some oversized products or wholesale shipments may require alternative carriers based on size, weight, or destination.


โฑ๏ธ How long does shipping take?

  • Standard USPS Delivery:ย Most items arrive withinย 3โ€“5 business daysย after leaving our warehouse.
  • Order Processing:ย Orders are typically processed and shipped withinย 24 business hoursย of purchase.
  • Delays:ย Shipping times may be longer during weekends, public holidays, or severe weather conditions.

If your order is time-sensitive, please contact us before purchasing, and weโ€™ll do our best to assist.


โšก Do you offer expedited shipping?

Currently, we do not offer paid expedited shipping options. However, many of our USPS shipments use Priority Mail, which generally arrives within 2โ€“3 business days for most U.S. locations.

If you need a faster delivery option, reach out to us at cs@usabatteries.com, and weโ€™ll check if a special arrangement can be made.


๐ŸŒŽ Do you ship internationally?

At this time, we only ship within the United States. We do not offer international delivery options.


๐Ÿ“ฎ Can you deliver to PO Boxes?

Yes! We gladly deliver to PO Boxes, as USPS handles most of our shipments.
If your order requires FedEx or UPS (usually for larger packages), we may contact you for a physical street address.


๐Ÿ” How can I track my order?

You will receive an email with a tracking number as soon as your order ships.
You can also check your order status anytime on our Track Your Order page.


๐Ÿ“ฆ Lost or Missing Packages

If your tracking number shows โ€œDeliveredโ€ but you havenโ€™t received your package:

  1. Check around your homeย โ€” porch, mailbox, garage, or any safe drop-off spots.
  2. Ask neighbors or household membersย in case someone accepted the package.
  3. Wait 24 hoursย โ€” USPS sometimes scans items as delivered before arrival.

If your package is still missing after these steps:

  • Contact yourย local USPS office. USPS can provideย GPS delivery confirmationย to determine where your package was left.
  • Contact us atย cs@usabatteries.comย or viaย Live Chat. We will assist you in opening an investigation and help retrieve GPS scan data if necessary.

Insurance Claims: All USPS shipments are insured. Any claims for lost or damaged packages must be filed with USPS. We will guide you through the process to ensure a resolution.


โœ… Our Commitment

Your satisfaction is our priority. If you experience any shipping issues, we will work closely with USPS or the relevant carrier to resolve the situation promptly and ensure your order reaches you safely.

The USABatteries.com Guarantee

Your satisfaction is our priority. Every battery from USABatteries.com is rigorously tested and backed by a comprehensive 1-Year Warranty. We are so confident in our quality that we offer a Risk-Free 30-Day Money-Back Guarantee: if you aren't completely happy within the first month, we will cover the return shipping costs ourselves. Quality power, zero risk.

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