40Y6797 Battery for Lenovo ThinkPad T60 T61 R60 R61 T500 W500 | 10.8V 48Wh 4400mAh 6-Cell 41+ – HT...
- Model Numbers: 40Y6797 (ThinkPad 41+) / 40Y6799 / 40Y6795
- Battery Type: Li-ion (Grade A+ High-Quality Cells)
- Voltage: 10.8V (Fully compatible with 11.1V)
- Capacity: 4400mAh / 48Wh (Standard 6-Cell)
- Cells: 6-Cell
- Condition: 100% Brand New from Factory
- Life Cycle: 600 – 1000 recharge cycles
- Multiple Protection: Over Current, Over Voltage, Over Charge & Discharge, Overheat, Short Circuit, ESD, EMI
- Color: Black
- Certifications: UL2054, CE, FCC, RoHS, UN38.3, MSDS, IEC62133
- OEM/ODM: Yes(Accepted)
- Warranty: 18 Months After Sales, 24/7 Email Support.
- Product Dimensions: 8 x 2.5 x 0.75 inches
- Item Weight: 9.6 pounds
40Y6797 Battery for Lenovo ThinkPad T60 T61 R60 R61 T500 W500 | 10.8V 48Wh 4400mAh 6-Cell 41+
Detailed Product Specifications and Features:
Core Technical Parameters:
| Property | Specification |
|---|---|
| Model Numbers | 40Y6797 (ThinkPad 41+) / 40Y6799 / 40Y6795 |
| Battery Type | Li-ion (Grade A+ High-Quality Cells) |
| Voltage | 10.8V (Fully compatible with 11.1V) |
| Capacity | 4400mAh / 48Wh (Standard 6-Cell) |
| Cells | 6-Cell |
| Condition | 100% Brand New from Factory |
| Life Cycle | 600 - 1000 recharge cycles |
| Multiple Protection | Over Current, Over Voltage, Over Charge & Discharge, Overheat, Short Circuit, ESD, EMI |
| Color | Black |
| Certifications | UL2054, CE, FCC, RoHS, UN38.3, MSDS, IEC62133 |
| OEM/ODM | Yes(Accepted) |
| Warranty | 18 Months After Sales, 24/7 Email Support. |
| Product Dimensions | 8 x 2.5 x 0.75 inches |
| Item Weight | 9.6 pounds |
Technical Note:
Design Note: The 40Y6797 (ThinkPad 41+) is a standard external rear 6-cell battery.
Physical Note: This 48Wh version is designed to fit flush with the back of most 14.1″ and 15.4″ widescreen chassis. It provides the ideal balance between weight and runtime, maintaining the original sleek profile of your ThinkPad workstation without the protrusion of 9-cell versions.
Product Features:
- Battery Newest Premium Grade Cells
- Best Circuit Board
- Multiple command chip control, keep the battery stable charge and discharge;
- Over-charger protection and discharger protection, short-circuit protection, ensure fast charges and low power consumption
- Easy & Quick Installation
- Our battery is 100% compatible with the original battery and meets
- CE/FCC/ROHS/UL-certified standards. It is 100% new from the manufacturer and can support up to 1000 recharge cycles over the life of the battery
- Power Interface: Gold-plated connector points to ensure current transport excellently and serve stably.
- Enclosure: The enclosure is made of ABS + PC high-quality material, it has high temperature-resistant function to protect your laptop from overheating
- Battery Buckle: The battery buckle is closely connected to the laptop, and the metal interface is stably powered
40Y6797 (ThinkPad 41+) / 40Y6799 / 40Y6795 Battery Compatibility Laptop Model List:
| Series | Specific Laptop Models & Machine Types (MT / MTM) |
|---|---|
| ThinkPad T Series | T60 / T60p: (All 14.1" & 15" Standard 4:3 and Widescreen 16:10) T61 / T61p: (Widescreen ONLY - 14.1" Wide & 15.4" Wide) T500: (Type 2055, 2081, 2242) |
| ThinkPad R Series | R60 / R60e: (All Models) R61 / R61e / R61i: (Widescreen ONLY - 14.1" Wide & 15.4" Wide) R500: (Type 2714, 2732) |
| ThinkPad W/SL | W500: (Type 4058, 4061)SL300 / SL400 / SL500 |
| ⚠️Physical incompatibility warning | Not applicable to the 14.1-inch standard screen (4:3 Standard) version of the T61 / R61. |
Note:
- IBM-branded models: The T60 and T60p are the last generation of ThinkPads to bear the IBM tricolor logo. This battery is fully compatible with these T60 series computers bearing the IBM logo.
- True IBM-era models (incompatible): It is incompatible with earlier models truly developed and manufactured by IBM, such as the T40, T41, T42, and T43 (which used completely different sockets like the 08K8193).
40Y6797 (ThinkPad 41+) / 40Y6799 / 40Y6795 Battery Compatible P/N (Part Numbers) List:
FRU (Field Replaceable Unit):
-
- 40Y6797 (48Wh 41+ model)
- 40Y6795, 40Y6799
- 42T4504, 42T4511, 42T4513, 42T4544, 42T4560, 42T4561
- 42T4566, 42T4572, 42T4644, 42T4645, 42T4651
- 41N5666, 43R2499
ASM (Assembly):
-
- 92P1137, 92P1138, 92P1139, 92P1140
- 92P1131, 92P1132, 92P1133, 92P1134, 92P1141, 92P1142
- AST Number： 42T4511, 42T4544 (Often appears on the original T60 battery label)
Why Choose HTJ 40Y6797 48Wh Battery?
- Perfect OEM Fit & Balance:
The HTJ 48Wh 6-cell pack is engineered to match the original factory weight and dimensions. It ensures your ThinkPad T60 or T500 remains portable and fits perfectly into standard docking stations and carrying cases. - Advanced Legacy Firmware:
Classic ThinkPads feature sophisticated battery authentication. HTJ uses high-grade communication ICs to ensure full compatibility with the original IBM/Lenovo Power Manager, providing accurate “Time Remaining” data and healthy status in BIOS. - Stable Voltage for Vintage Boards:
Older motherboards are sensitive to power ripples. Our Grade A+ cells provide a clean 10.8V output, protecting the capacitors and internal circuitry of your classic T-series hardware. - 18-Month Manufacturer Warranty:
We stand by our build quality. As a direct manufacturer, HTJ offers an 18-month warranty and technical support to ensure your vintage machine stays powered for years to come.
How to Install Your New 40Y6797 Battery?
Replacing the external 40Y6797 (41+) is a quick, tool-free process using the classic ThinkPad sliding latch system.
⚠️ Crucial Safety Preparation
- Shutdown: Power off your laptop and disconnect the AC adapter.
- Surface: Place the laptop on a soft, clean surface to protect the classic “ThinkVantage” rubberized finish.
40Y6797 Battery Step-by-Step Installation Guide:
- Locate the Dual Latches: Find the two sliding latches on the rear underside of the laptop.
- Unlock the Manual Latch: Slide the right-side latch to the “Unlocked” position.
- Release the Spring Latch: Slide and hold the left-side spring-loaded release latch.
- Remove the Old Battery: While holding the release latch, slide the old battery straight out.
- Insert the HTJ Battery: Align the guide rails of the new HTJ 40Y6797 and slide it in until it clicks.
- Secure the Lock: Important: Slide the manual lock latch back to the “Locked” position.
- Calibration: For best results, charge to 100% and then allow to discharge to 5% once to sync the system gauge.
💡 Pro Tip:
If you are restoring a T60 or T61, the 6-cell design is the most popular choice for maintaining the “Classic Look.” It allows the laptop to sit flat on the desk, which is preferred by many collectors and retro-computing enthusiasts.
FAQ (Frequently Asked Questions)
Q: Can I use this battery on an original IBM-branded T60?
A: Yes! This battery is fully compatible with both the original IBM-logo T60 models and the later Lenovo-logo versions.
Q: Will this fit my 14.1-inch “Square” T61?
A: No. This battery fits the 14.1-inch Widescreen T61. The 14.1-inch Standard Aspect (4:3) T61 uses a physically smaller battery.
Q: Is 10.8V okay if my original was 11.1V?
A: Yes. 10.8V and 11.1V are functionally identical in this architecture; the difference is simply a minor variation in cell chemistry rating, and the laptop’s charging circuit handles both perfectly.
Q: Is this battery compatible with my original IBM ThinkPad T60?
A: Yes. The ThinkPad T60/T60p was the flagship transition model. Our 40Y6797 battery is 100% compatible with all T60 units, including those featuring the original IBM three-color logo.
Q: I have a ThinkPad T61. How do I know if this fits?
A: This battery fits Widescreen T61 models. If your screen is a wide rectangle (16:10), it fits perfectly. If your screen is a square-ish shape (4:3 Standard Aspect), your laptop requires a different, smaller battery.
Q: Can I use this on older IBM T40 or T43 laptops?
A: No. While they carry the “T” series name, the physical battery connector and shape changed starting with the T60 series. This battery is strictly for T60 and newer models.
Laptop Maintenance Tips:
- New battery: For using a new battery, you’d better try a few cycles of discharging to 5%. then charging up to 95%. So that it can be activated completely
- Overuse: Do not always run a battery down to 0%. This would shorten its usage life.
- Charging sequence: When charging, first install the battery, then turn on the power. When fully charged, first cut off the power, then pull the power plug.
- Long-term storage: Please store the unused battery fully charged. (Charge it once a month.) Do not store at low power to prevent reducing the lifespan of a battery
- Charger: Do not replace the laptop adapter casually. If the original adapter cannot be used due to malfunction or damage, please replace it to avoid reducing the battery’s service life due to incompatibility.
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