GHU New Battery 57 Wh for Lenovo ThinkPad T61 R61 R400 T400 - Reliable

In this review of the GHU New Battery 57 Wh for Lenovo ThinkPad models, the reviewer finds a practical, direct replacement aimed at owners of older 14' wide-screen ThinkPad laptops who need dependable runtime. The bottom line: this replacement battery is for users who want a straightforward swap for part numbers like 42T5263, 43R2499 or 42T4531 and value consistent capacity over extra bells and whistles. It delivers a clear upgrade path from worn cells with a stated 5100mAh, 57 Whr rating and broad compatibility across T61, R61, T400 and R400 families.

Key Features

• 57 Wh capacity: Provides extended run time compared with severely aged original batteries so a laptop can last longer on the move.
• 5100mAh 6-cell design: Balances capacity and weight for the 14' widescreen ThinkPad models without adding unnecessary bulk.
• Wide compatibility: Replaces many Lenovo and IBM part numbers including 42T5263, 42T5229 and 43R2499 to simplify finding a match.
• Drop-in replacement: Designed for direct fit with T61, R61, R61i, T400 and R400 series units so no special tools or adapters are required.
• Clear identification as 33+: The 33+ designation helps confirm this battery is the 14' widescreen variant when comparing parts.

Who It's For

This battery is best for owners of legacy Lenovo ThinkPad 14' widescreen laptops (T61 series, R61 series, T400 and R400) who need a reliable replacement to restore usable battery life. It suits people who keep older hardware for work, development, or compatibility with legacy software and require predictable runtime rather than cutting-edge density.

Users who should look elsewhere include owners of ultra-compact, newer ThinkPad models or anyone seeking highest-density modern cells; this product is tailored to the specific older 14' widescreen inventory and its designated part numbers, not the latest laptop lines.

Pros & Cons

Pros

• Restores portable runtime to aging T61/R61/T400 machines with a true 57 Whr capacity.
• Fits many Lenovo/IBM part numbers, making compatibility checks easier.
• 6-cell form factor keeps weight reasonable while improving battery life versus heavily worn originals.

Cons

• Not intended for newer ThinkPad models or non-14' widescreen variants, so confirm part numbers before purchase.

Specifications

Our Verdict

The GHU 57 Wh replacement is a sensible, cost-effective option for anyone maintaining older 14' ThinkPad hardware. It restores usable battery life, fits a wide list of Lenovo and IBM part numbers, and avoids unnecessary complexity. Buyers should confirm the listed part numbers match their laptop, but for compatible T61/R61/T400 owners this is good value and a straightforward way to extend a machine's useful life.

Frequently Asked Questions

Will this battery fit my T61 or T400?
Check your laptop part number against the listed replacements such as 42T5263, 43R2499 or 42T4531; if one matches it is the 14' widescreen 33+ variant and should fit.

What capacity does the battery offer?
The battery is specified at 5100mAh (57 Whr) in a 6-cell configuration.

Is this suitable for newer ThinkPad models?
No, this battery is designed specifically for older 14' widescreen T61/R61/T400 and R400 series machines and is not intended for current-generation laptops.