Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 0A36306 |
| Manufacturer | Lenovo (ThinkPad FRU) |
| Product Type | 6-Cell Li-Ion Notebook System Battery (ThinkPad Battery 44+) |
| Compatible Platform | ThinkPad X220. X220i, X230. X230i series |
| Battery Chemistry | Lithium-Ion (Li-Ion), cylindrical cells |
| Nominal Voltage | 11.1 V DC |
| Capacity (Wh) | 63 Wh |
| Capacity (Ah / mAh) | 5.6 Ah / 6300 mAh |
| Cell Count | 6 cells |
| Dimensions (approx.) | 208.8 × 55.1 × 22.8 mm (8.2 × 2.2 × 0.9 in) |
| Weight (approx.) | 345 g (0.76 lb) |
| Operating Temperature | 5 °C to 35 °C (41 °F to 95 °F) |
| Relative Humidity | 8 % to 95 % (non-condensing) |
| Agency Approvals | CE, UL/cUL, FCC, PSE, KC, RoHS |
| Warranty (original) | 1-year CRU (Customer Replaceable Unit) |
Main Features and Advantages
OEM form-fit for X220/X230 engineering fleets. The Lenovo 0A36306 is not a generic third-party cell pack—it is the Lenovo FRU-specified Battery 44+, meaning the plastic housing geometry, latch engagement, and SMBus pin-out match the X220/X230 chassis exactly. Third-party clones often mis-align the rear bezel or use lower-grade cells that report inflated mAh to the ThinkPad power manager; by contrast Lenovo 0A36306 reports honest cycle counts and passes Lenovo Vantage’s battery health diagnostics natively. For plants that standardize on X220/X230 as their “shop floor programming laptop” image (common in Siemens and Rockwell houses), keeping a few Lenovo 0A36306 units on the MRO shelf avoids compatibility drama.
Balanced capacity for mobile commissioning. At 63 Wh the Lenovo 0A36306 typically yields 5–7 hours of mixed-use runtime on an X230 with the IPS display at moderate brightness—enough for a full shift of ladder logic editing, online monitoring of a Siemens S7-300/400 rack, or HMI tag cross-reference work beside a live panel without hunting for a 110 V outlet. Compared to the 4-cell 44 (0A36305. 44 Wh / ~3 hrs), the Lenovo 0A36306 adds meaningful headroom; compared to the 9-cell 44++ (0A36307) it avoids the ~25 mm rear overhang that blocks some docking cradles and tightened panel-shop work surfaces. For field service vans, the 6-cell is the sweet spot.
Smart BMS with full protection suite. The internal battery management IC on Lenovo 0A36306 monitors per-cell voltage, pack temperature, and charge/discharge current, implementing over-current, over-voltage, over-temperature, over-discharge, and short-circuit protection—important in plant environments where a laptop may be left in a hot control cabinet area or charged from unstable site power. The SMBus link lets Lenovo Vantage and the BIOS report remaining capacity, cycle count, and “wear %” so maintenance planners can retire packs proactively before they swell or drop cells mid-shift.
Cross-FRU interoperability. The Lenovo 0A36306 shares electrical and mechanical commonality with a cluster of sister FRUs—0A36305 (4-cell), 0A36307 (9-cell), 42T4861. 42T4865. 0A36282—all seating in the same X220/X230 bay. This means a plant that bought mixed 4/6/9-cell fleets over the years can standardize spare procurement on Lenovo 0A36306 as the default swap (the 4-cell users gain runtime, the 9-cell users get a lighter backup), simplifying storeroom SKUs.
Legacy lifecycle reality. With the X220/X230 platform now deep into its second decade, new-old-stock Lenovo 0A36306 units have become a scarcity; reputable industrial spare vendors therefore offer both sealed OEM stock and pulled-tested units that have been discharge-cycled and capacity-verified on a load rig before resale. For automation contractors running 20+ X230s across regional project sites, buying Lenovo 0A36306 in small batches from a vendor who tests each pack is far cheaper than refreshing the entire laptop fleet to a T-series or P-series just to get battery availability.
Application Field
The Lenovo 0A36306 finds its primary use not in general office computing but in industrial automation field workflows where the ThinkPad X220/X230 remains a workhorse. The most concentrated application is PLC and HMI commissioning: Siemens TIA Portal (up to V15/V16. which still run comfortably on X230 Ivy Bridge hardware), Rockwell Studio 5000 / RSLinx Classic, Schneider EcoStruxure Control Expert, and Omron CX-Programmer all see daily use on X220/X230 laptops in panel shops and on skid commissioning sites. When a lead engineer is online with a S7-1500 rack or a ControlLogix L7/L8 processor, a failing battery means losing the live connection and potentially corrupting a download—Lenovo 0A36306 is the hot-swap that prevents that.
A second major application is robotics teach-pendant adjunct work. While KUKA KRC4/KRC5 and Fanuc i-series pendants handle motion, the offline prep—WorkVisual project assembly, Fanuc Roboguide PC-side file transfer, ABB RobotStudio PC sync—is routinely done on an X230 at the cell edge. Lenovo 0A36306 gives the engineer enough untethered runtime to move between cells without shutting down the IDE. Similarly, Drives and VFD commissioning (SINAMICS, PowerFlex, Altivar) often involves standing inside an MCC lineup with a laptop on the knee-level door shelf; site power may be limited to 24 V service outlets only, so the battery must carry the session.
Spare parts storeroom standardization is a third application layer. Many system integrators and OEM skid builders maintain a “gold image” X230 loaded with their standard toolchain (TIA + Studio + RSLinx + Ignition Designer + KUKA WorkVisual + ABB RobotStudio) and clone it across 10–30 units spread across project sites. The Lenovo 0A36306 becomes a storeroom SKU right alongside PLC spare modules, HMI touch panels, and drive FUSE/IGBT kits—procurement treats it as automation MRO, not IT consumable.
Finally, legacy migration projects keep demand alive. Plants migrating from S7-300/400 to S7-1500 or from ControlLogix L6 to L8 often keep one X230 with the old Step 7 / RSLogix 5000 v20 installed specifically to talk to legacy racks during cutover weekends. A fresh Lenovo 0A36306 in that machine ensures the migration engineer isn’t tethered to a dusty CAT5 run in a live MCC room.
Related Products
Lenovo 0A36305 – ThinkPad Battery 44 (4-cell), 44 Wh, same X220/X230 fit as Lenovo 0A36306 but shorter runtime; often stocked alongside as a lower-cost spare.
Lenovo 0A36307 – ThinkPad Battery 44++ (9-cell), 94 Wh, extended rear protrusion, for X220/X230 users needing 8–10 hr shifts; electrically compatible bay-mate to Lenovo 0A36306.
Lenovo 42T4861 / 42T4865 – Sister FRU Li-Ion packs for the X220/X230 family; interchangeable in the same bay, frequently cross-referenced with Lenovo 0A36306 in Lenovo’s accessory compatibility matrix.
Lenovo 0A36282 – Another X220/X230-compatible 6-cell FRU variant; often listed alongside Lenovo 0A36306 in multi-pack storeroom orders.
Lenovo 40Y7625 – ThinkPad External Battery Charger, compatible with 0A36305/0A36306/0A36307 packs; allows off-laptop charging of a spare Lenovo 0A36306 while the X230 stays in service.
ThinkPad X230 (2320 / 2324 / 2306) – The host laptop platform for Lenovo 0A36306; many spare buyers procure both the X230 base unit and the battery together for building secondary engineering kits.
ThinkPad X220 (4287 / 4289 / 4290) – Earlier Sandy Bridge host for Lenovo 0A36306; still widely deployed in automation shops running older TIA Portal / Step 7 builds.
Lenovo 0A36317 – ThinkPad Battery 67+ (6-cell) for X220/X230 Tablet variants; related SKU for sites using the tablet X220t/X230t convertibles in clean-room or inspection roles.
