Replacement Battery Specification
- Battery Model: X121E
- Capacity: 5.6Ah / 63Wh
- Voltage: 11.1V
- Battery Type: Li-ion
- Cell: Made in China, high quality guarantee
- Color: Black
- Condition: Replacement Battery (100% Brand New, 1-year warranty!)
Replace Part Number
- 42T4951
- 45N1058
- 45N1059
- 45N1176
- 45N1060
- 45N1063
- 45N1062
- 45N1057
- 45N1056
- 42T4947
- 42T4948
- 45N1174
Compatible Laptop Model
- For Lenovo ThinkPad X121E Series
- For Lenovo ThinkPad X130E Series
- For Lenovo ThinkPad X131E Series
- For Lenovo ThinkPad X140E Series
- For Lenovo ThinkPad E120 Series
- For Lenovo ThinkPad E125 Series
- For Lenovo ThinkPad E130 Series
- For Lenovo ThinkPad E135 Series
- For Lenovo ThinkPad E145 Series
- For Lenovo ThinkPad E320 Series
- For Lenovo ThinkPad E325 Series
- For Lenovo ThinkPad E330 Series
- For Lenovo ThinkPad E335 Series
- For Lenovo ThinkPad L330 Series
Product Features
- ✅ High-capacity 63Wh / 5.6Ah Li-ion cells for all-day productivity
- ✅ Stable 11.1V output — OEM-grade voltage for ThinkPad reliability
- ✅ Built-in BMS protection against overcharge, over-discharge, and short circuits
- ✅ 100% brand new cells tested to meet or exceed original Lenovo specifications
- ✅ Direct plug-and-play replacement — no tools or modification required
- ✅ 1-year warranty with responsive after-sales support
Why Choose This Battery
This X121E replacement battery is purpose-built for Lenovo ThinkPad business and education laptops, restoring full runtime to your X121E, E130, E320, and compatible series without the OEM price tag.
Key Benefits
- OEM-equivalent 63Wh capacity delivers reliable all-day battery life
- Premium Li-ion cells with consistent discharge curve for stable performance
- Multi-layer protection circuit prevents overheating and voltage spikes
- CE / RoHS compliant and tested for safe air shipping
- Cost-effective alternative to Lenovo OEM at a fraction of the price