Replacement for 42T4518: Drop-In Alternatives We Stock
Looking for a replacement for the 42T4518 (42T4518 - IBM Lenovo 3-Cell Li-Ion Battery 49 for ThinkPad X300 Series)? Pro Disk Network ships IBM drop-in replacements and equivalent modern parts from US inventory. Every alternate below is in-stock today with same-day shipping for orders placed before 2pm ET. If your unit is still under warranty, contact our engineering team — we offer cross-shipping for B2B customers on Net 30 terms.
About the 42T4518
| SKU | 42T4518 |
|---|---|
| Product | 42T4518 - IBM Lenovo 3-Cell Li-Ion Battery 49 for ThinkPad X300 Series |
| Current price | $283.84 |
| Stock status | In Stock |
| Detail page | View 42T4518 › |
Drop-in replacements for 42T4518
Each part below is currently in our US warehouse, ships same-day for orders before 2pm ET, and includes our 90-day warranty. SKUs link to the full product page with photos, datasheets and B2B quote form.
08K8049 - IBM Lenovo 6-Cell 10.8V 4400mAh Li-Ion Battery for ThinkPad x30 Series
SKU: 08K8049
Price: $125.47
02K6649 - IBM Lenovo 10.8V 4400mAh 6-Cell Li-Ion Battery for ThinkPad T Series
SKU: 02K6649
Price: $155.39
42T4549 - IBM Lenovo 10.8V 4400mAh 6-Cell Li-Ion Battery for ThinkPad T61/R61 Series (14-inch)
SKU: 42T4549
Price: $166.47
42T4911 - IBM / Lenovo Li-Ion 6-Cell 10.8V 5.2AH DC High Performance Battery for ThinkPad T410 / T510
SKU: 42T4911
Price: $236.36
92P1149 - IBM / Lenovo 8-Cell 1900mAh 14.4V Li-Ion Battery for ThinkPad X40 / X41
SKU: 92P1149
Price: $241.68
How we pick replacements
Every recommendation above was selected using these criteria:
- Drop-in compatibility — same form factor (2.5"/3.5", PCIe slot, SFP port, etc.), so it fits the original chassis without modification
- Equivalent or better performance — matched on RPM/IOPS/speed/throughput, never downgraded
- Same-brand-preferred — we list the OEM-equivalent first when available, then trusted aftermarket
- Warranty coverage — 90-day Pro Disk warranty on every part, with 1-year option for B2B
- In stock today — never recommend a part that is on backorder
Need help confirming compatibility?
Our engineers validate every replacement against your specific server, switch, or chassis model before shipment. Email sales@prodisknetwork.com with your platform model (e.g., Dell PowerEdge R740, HP DL380 Gen10, Cisco Catalyst 9300) and we will confirm the exact part number that drops into your hardware.